Review of Accounting Studies https://doi.org/10.1007/s11142-021-09650-4 Why are expanded audit reports not informative to investors? Evidence from the United Kingdom Clive S. Lennox1 · Jaime J. Schmidt2 · Anne M. Thompson3 Accepted: 13 September 2021 © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2021 Abstract Standard-setters worldwide have passed new audit reporting requirements aimed at making audit reports more informative to investors. In the UK, the new standard expands the audit reporting model by requiring auditors to disclose the risks of material misstatement (RMMs) that had the greatest effect on the financial statement audit. Using short window tests, prior research indicates that these disclosures are not incrementally informative to investors (Gutierrez et al. in Review of Accounting Studies 23:1543–1587, 2018). In this study, we investigate three potential explanations for why investors do not find the additional auditor risk disclosures to be informative. First, using long-window tests, we find no evidence that the insignificant short-window market reactions are due to a delayed investor reaction to RMMs. Second, using value relevance tests, we show that the insignificant market reactions are not due to auditors disclosing irrelevant information. Finally, we provide evidence suggesting that RMMs lack information content because investors were already informed about the financial reporting risks before auditors began disclosing them in expanded audit reports. Keywords Audit reporting model · Information content · Value relevance JEL classification M41 · M42 · M48 * Jaime J. Schmidt jaime.schmidt@mccombs.utexas.edu 1 University of Southern California, Los Angeles, CA, USA 2 McCombs School of Business, The University of Texas at Austin, Austin, TX 78712, USA 3 University of Illinois at Urbana-Champaign, Champaign, IL, USA 13 Vol.:(0123456789) C. S. Lennox et al. 1 Introduction The audit report communicates to investors the auditor’s opinion as to whether a company’s financial statements are fairly presented. Historically, the audit report has been criticized for being uninformative due to its standardized wording and pass/fail nature (i.e., the auditor issues either an unqualified [pass] or qualified [fail] opinion). To address this criticism, standard-setters and regulators worldwide have implemented an expanded model of audit reporting (European Commission 2010; Financial Reporting Council 2013; IAASB 2015; PCAOB 2017). The new audit reporting framework requires auditors to disclose the matters (e.g., financial statement areas or risks of material misstatement) that had the greatest effect on the overall audit strategy or that involved especially challenging auditor judgments (Financial Reporting Council 2013, PCAOB 2017). The expanded audit reports were intended to provide investors with more information about the audit and accompanying financial statements. The primary objective of the new risk disclosures was to convey useful information to investors. However, prior research finds the disclosures are not incrementally informative (Gutierrez et al. 2018, 2021; Files and Gencer 2020; Liao et al. 2019; Burke et al. 2020). In this study, we investigate why investors do not find the disclosures to be informative. One possible explanation is that the risk disclosures contain useful information but investors do not immediately appreciate and respond to it. A second possibility is that the disclosures fail to reflect value relevant information. For example, any significant risks of material misstatement should be addressed and mitigated during the audit through substantive audit procedures. Therefore, the risk disclosures may not be relevant to the audited financial statements even if they were relevant when the auditor was planning the audit. A third possibility is that auditors are disclosing risks that were already known to investors. In other words, investors could have already had an adequate understanding of the financial reporting risks from earlier disclosures such as annual reports, conference calls, or earnings announcements. We explore each possibility and find no evidence that investors were slow to respond to the risk disclosures or that the risk disclosures lacked value relevance. Instead, we find that RMMs lack incremental information because investors already knew about most of the risks before auditors started disclosing them in the expanded audit reports. In the United Kingdom (UK), the expanded model of audit reporting applies to companies with a premium listing on the London Stock Exchange and became effective for fiscal years ending on or after September 30, 2013. The new audit reporting standard requires auditors to disclose the risks of material misstatement (RMMs) that had the greatest effect on the overall audit strategy, allocation of resources during the audit, and efforts of the audit engagement team (FRC 2013). We begin by expanding upon tests in prior research that conclude that investors did not find RMMs to be incrementally informative (Gutierrez et al. 2018). Specifically, we examine whether the number of RMMs is associated with a company’s signed or unsigned 3-day abnormal market return, abnormal 3-day trading 13 Why are expanded audit reports not informative to investors?… volume, and/or abnormal 3-day stock return volatility.We find no evidence of an investor reaction using any of these measures. We continue to find insignificant investor reactions when we partition RMMs into those that are expected to be more rather than less informative; i.e., (1) entity versus account-level risks, (2) unexpected versus expected risks, (3) company-specific versus industry-common risks, (4) companies in weaker versus stronger information environments, and (5) risks expressed in more negative versus less negative language. We also examine whether clients view RMMs as informative by examining whether RMM disclosures affected companies’ auditor appointment decisions. Prior research documents that companies are more likely to change auditors after receiving an unfavorable audit opinion (Lennox 2000; Chen et al. 2016; Newton et al. 2016). Therefore, we would interpret a positive association between RMMs and auditor turnover as indicating that companies view RMMs as conveying negative news. We find no association between auditor turnover and the number of RMMs disclosed by the auditor, which is consistent with the previous tests suggesting that RMMs are not incrementally informative. Next, we investigate three possible explanations for why investors find the RMM disclosures to be uninformative. First, we investigate whether the insignificant short window (i.e., 3-day) market reactions are due to investors failing to respond immediately to the information in the RMMs. We examine long-window abnormal returns over event horizons of 1 month, 3 months, 6 months, and 12 months. Across all specifications, we find that RMMs are not associated with long-window abnormal returns. Thus, we do not find evidence of a delayed reaction by investors. Second, we examine whether the new disclosures are uninformative because RMMs do not reflect value relevant information. Auditors identify financial reporting risks at the start of the audit during the audit planning phase and then mitigate these risks with substantive procedures during the course of the audit. At the end of the audit, the financial statements should be free from material misstatement and the risks that were identified during the planning phase of the audit should be mitigated. Consequently, the risks that auditors report as RMMs at the conclusion of the audit may not be value relevant at the time of the audited financial statements even if they were relevant to the pre-audit financial statements. In contrast, there are several reasons why RMMs could be value relevant even if they are not incrementally informative. One possibility is that RMM disclosures reflect the unreliability of the accounting information. For example, a less reliable earnings number will receive a lower weight in valuation if it reflects uncertainty in the firm’s ability to generate future cash flows (Holthausen and Verrecchia 1988). In addition, the expanded audit disclosures may directly correlate with future cash flows (e.g., an RMM pertaining to potential goodwill impairments may signal lower future cash flows). Moreover, the RMM disclosures may reflect risks that negatively impact the firm’s stock price through a higher discount rate. Thus, if RMM disclosures are value relevant for any of the above reasons, we would expect investors to attach lower values to the audited values of earnings and net assets when auditors disclose more risks of material misstatement. We estimate value relevance models (Barth 1991; Barth et al. 2001) and find the coefficients on earnings per share and net assets per share are significantly smaller 13 C. S. Lennox et al. when auditors disclose more RMMs. These results suggest that RMM disclosures are indeed value relevant. Further, we document that company performance (as measured by ROA and operating cash flows) is less persistent among companies with more RMMs. Together, these findings suggest that the insignificant investor reactions are not attributable to auditors reporting RMMs that are irrelevant to investors. Finally, we investigate whether the RMMs lack incremental information content because investors already knew about the risks prior to auditors disclosing them. Similar to Dodd et al. (1984), we argue that investors could have become informed about such risks from earlier disclosures such as prior annual reports, conference calls, or earnings announcements. We perform two analyses to determine whether investors were already informed. First, we estimate value relevance models using data from the year prior to the expanded audit reports (i.e., year t-1) to see if the information had already been priced by investors in the year prior to disclosure. We find the valuation coefficients on earnings per share and net assets per share in year t-1 are significantly smaller for the companies whose auditors disclose more risks of material misstatement in year t. These results suggest that investors already knew which companies were more (or less) risky before auditors started disclosing RMMs in the expanded audit reports. Second, we search for direct evidence that the specific risks mentioned by auditors had already been disclosed. For the RMMs disclosed in the first year of adoption, we search the year t-1 annual reports, prior earnings announcements, and prior conference calls to determine whether the risks disclosed by auditors in year t had previously been disclosed by companies. We undertake this analysis for half the sample companies due to the high costs of manually searching these multiple information channels. We find that approximately 65% of the risks disclosed by auditors in the first year of adoption had already been disclosed by the company in the prior year. In the second year of adoption, 73% of the RMMs were reported by the auditor in the prior year audit report. These findings suggest that most RMMs had already been disclosed to investors. Next, we re-perform our market reaction tests after separating auditors’ risk disclosures into “already disclosed” risks and “new” risks (i.e., risks for which we could not find evidence of a prior disclosure). As expected, we find insignificant market reactions to the “already disclosed” RMM disclosures.Perhaps surprisingly, we also find insignificant market reactions to the “new” RMM disclosures. The lack of significance could reflect that investors already knew about these risks through other channels, such as the financial press or analyst research reports, that were not included in the sources we examined. It is also possible that investors find it difficult to extract new information because the majority of RMMs for each company were “already disclosed.” Another possibility is that the already disclosed risks were more important to investors than the new risks. In other words, companies could have disclosed the most important risks, leaving only the less important risks undisclosed until the audit report date. Our results contribute to a growing literature on the effects of expanded audit reporting. Consistent with prior research (e.g., Gutierrez et al. 2018, 2021; Liao et al. 2019; PCAOB 2020), our study shows that investors do not regard auditors’ 13 Why are expanded audit reports not informative to investors?… risk disclosures as incrementally informative. More importantly, our study examines alternative explanations for why the expanded reports are not incrementally informative. We rule out the potential explanation that RMM disclosures contain useful information that is not immediately appreciated by investors. We also rule out the potential explanation that RMM disclosures lack information content because they are not value relevant. Instead, our findings suggest that RMMs lack incremental information because investors already knew about the vast majority of risks before auditors started disclosing them in the expanded audit reports. Thus, our study complements prior research documenting that investors may learn about and react to company risks in advance of auditors disclosing them in audit reports (e.g. Chow and Rice 1982; Elliott 1982; Dodd et al. 1984; Czerney et al. 2018). Our findings should assist the Financial Reporting Council and other standard setters with their post-implementation review of the new audit reporting standard. While there may be other benefits to the new reporting standard, such as improved management disclosures (Burke et al. 2020; Andreicovici et al. 2020), we find no evidence that the expanded audit disclosures are incrementally informative for investors. However, we acknowledge that the existing auditor reporting requirements may only be a first step toward enhanced auditor reporting (Minutti-Meza 2020) and that the full benefit of enhanced auditor communications may take more time to materialize (PCAOB 2020). 2 The new audit reporting standard and prior literature 2.1 The new audit reporting standard The audit report conveys the auditor’s opinion about whether the financial statements present fairly, in all material respects, the financial position of the company. An audit report with an unqualified opinion provides investors with reasonable assurance that the financial statements are free from material misstatement, whereas an audit report with an “except for” or “adverse” opinion states that one or more material misstatements exist. Prior research shows that the vast majority of public companies receive unqualified opinions rather than qualified opinions or opinion disclaimers. For example, Lennox (2005) examines a sample of 28,292 audit opinions issued between 1995 and 1998 and finds that 99.8% are unqualified, 0.1% are “except for” qualifications, 0.1% are opinion disclaimers, and none are adverse. Because nearly all audit reports are unqualified with standardized wording (Lennox 2005; Gray et al. 2011; Church et al. 2008), concerns have been raised that the traditional model of audit reporting is uninformative. Moreover, even the small number of audit reports with qualified (i.e., “except for” or disclaimer) opinions have not been shown to generate significant market reactions (Dodd et al. 1984). Auditors have access to a wealth of private information about their clients. Therefore, it is understandable that investors would want auditors to disclose more information about areas of high financial reporting and audit risks (PCAOB 2017). In response to investor requests to make the audit report more informative, regulators and standard setters worldwide, including the PCAOB, IAASB, FRC, and European 13 C. S. Lennox et al. Commission, have changed the audit reporting standards to require auditors to disclose more risk-related information. In the UK, the FRC’s revisions to the International Standard on Auditing (ISA) 700 became effective in September 2013 (IAASB 2013). Under the new standard, auditors must discuss the risks of material misstatement (RMMs) that had the greatest effect on the overall audit strategy, allocation of resources during the audit, and efforts of the audit engagement team, including how the scope of the audit was altered to mitigate the identified risks (FRC 2013).1 The purpose of such risk disclosures is to provide “potentially valuable information that investors … have not had access to in the past” (PCAOB 2013, p. 6) in order to “assist intended users … in understanding the entity and areas of significant management judgment in the audited financial statements” (IAASB 2015, p. 46). 2.2 Prior literature on the impact of the new audit reporting standards Several experimental and textual analysis studies examine how expanded audit reports might affect investors and the information available to them. Using audit report wording that predates the PCAOB’s proposal, Christensen et al. (2014) find that experimental participants are less willing to invest in a company when an audit report discloses a critical audit matter as compared with the traditional pass/fail audit report. Similarly, Kachelmeier et al. (2020) find that experimental participants have less confidence in accounts that are identified in the audit report as being critical audit matters. In contrast, Kohler et al. (2020) find that investment professionals are better able to assess the economic situation of a company when presented with a key audit matter disclosure. Sirois et al. (2020) use eye tracking software to examine how auditors’ risk disclosures affect users’ navigation of the annual report. They find that participants devote more attention to risks that are highlighted in the audit report. However, Boolaky and Quick (2016) find that the disclosure of key audit matters has no effect on bank directors’ perceptions of financial reporting quality or their credit approval decisions. Unlike archival research, a limitation of experimental studies is that they are unable to test whether auditors’ disclosures provide investors with new incremental information above and beyond the information contained in other sources (e.g., annual reports, press releases, conference calls). Gutierrez et al. (2018) use archival data from the UK to determine whether the new audit reporting standard has improved the information environment. Their study collects data for the rule adopters (i.e., premium-listed UK companies) and a control group of non-adopters (i.e., companies listed on the UK Alternative Investment Market) in the 2 years before and after the new rules were adopted in September 2013 (2011–2015). They then implement a difference-in-differences research design to examine whether the new reporting standard has a different effect on adopters relative to non-adopters. They measure market reactions using cumulative signed abnormal returns, cumulative absolute abnormal returns, abnormal trading volume, and abnormal return volatility. They 1 The Financial Reporting Council also requires auditors to disclose materiality thresholds. Our tests focus on the risk disclosures rather than materiality disclosures because the risk disclosures are common to the proposed or effective revisions to audit reporting standards issued by all the relevant standardsetters and regulators (i.e., the PCAOB, IAASB, and European Commission). 13 Why are expanded audit reports not informative to investors?… find no evidence that the new audit reporting standard has enhanced the information environment for the treatment sample of adopters relative to the control sample of non-adopters moving from the pre-adoption period to the post-adoption period. In an additional crosssectional analysis, Gutierrez et al. (2018) examine the following cross-sectional characteristics of expanded audit reports among the subsample of adopter companies: the length of the expanded audit report, the number of disclosed risks, and auditor disclosures about materiality. In these cross-sectional analyses, the authors continue to find little evidence of any information content within the expanded audit reports. Gutierrez et al. (2021) examine the extension of expanded audit reports to companies listed on the UK’s Alternative Investment Market in 2017. Despite AIM companies being smaller and more opaque than premium-listed companies, Gutierrez et al. (2021) find that the expanded audit disclosures contain little or no incremental information. 3 Methodology and results We begin our analysis by expanding upon the cross-sectional tests of Gutierrez et al. (2018) for the sample of UK adopters. We partition RMMs into several separate categories in an attempt to isolate potentially informative RMMs from uninformative ones. First, we identify RMM disclosures that discuss risks at the entity level versus account level because we expect entity-level risks to be more pervasive than account-level risks (Doyle et al. 2007). Second, we identify risks that are companyspecific versus industry-common because the industry-common RMMs may be generic and already known by investors, which might explain the lack of a market response. Third, we use a prediction model to estimate the number of expected and unexpected RMMs. We use the residuals from the prediction model to measure the number of unexpected RMMs and then test whether investors react to the unexpected RMMs. Fourth, we isolate the RMM disclosures with more negative versus less negative language. Finally, we calculate the change in the number of RMMs between the first and second years of adoption. In all these analyses, we measure investor responses using 3-day cumulative abnormal returns, unsigned cumulative abnormal returns, abnormal trading volume, and abnormal stock return volatility. 3.1 Sample selection The UK’s expanded model of audit reporting applies to companies with a premium listing on the London Stock Exchange and with fiscal years ending on or after September 30, 2013.2 We examine the first 2 years of the new auditor reporting standard for the premium-listed companies. We obtain their annual reports from Companies 2 The FRC announced the new audit reporting standard in June 2013, less than 4 months before the expanded audit reports were required. The late announcement provided little time for companies or auditors to pre-empt the new standard with additional risk disclosures in the prior fiscal year. Moreover, audit firms and companies were opposed to the expanded model of audit reporting (New York Times 2014), which reduces the likelihood of voluntary early adoption. There is only one observation in our sample where an auditor provides risk disclosures prior to the required implementation date; our results are robust to dropping this company. 13 C. S. Lennox et al. House and corporate websites and gather other accounting and market data from FAME, Compustat Global, and Datastream.3 After dropping companies with missing data, we obtain a sample of 478 companies for the first year of adoption (year 1) and 454 companies for the second year (year 2), giving a total of 932 company-year observations.For each expanded audit report, we manually code each auditor risk disclosure, the name of the auditor, and the date that the annual report (and audit report) was released to investors.4 Table 10 in Appendix A provides extracts from three audit reports to illustrate the various types of RMMs that auditors disclose. 3.2 Descriptive statistics Table 1 provides descriptive statistics for the 478 companies in year 1 and the 454 companies in year 2. Panel A shows that the mean number of RMMs in year 1 (3.87) is not significantly different from the mean number of RMMs in year 2 (3.77). Panel B presents descriptive statistics for the dependent variables, the RMM variables, and the control variables for the combined sample (years 1 and 2). (Variable definitions are provided in Appendix B.) The 25th percentile value of RMM is 3.00 while the 75th percentile is 5.00, signifying cross-sectional variation in the number of RMMs disclosed by auditors. 3.3 Do RMMs convey new information? We begin in Eq. (1) by examining whether investors find RMMs to be incrementally informative. Market reaction = 𝛼 + đť›˝1 RMM + Controls + 𝜀 (1) The market reaction dependent variables in Eq. (1) are (1) the 3-day cumulative abnormal returns centered on company i’s annual report release date (CAR​), (2) the absolute magnitude of the 3-day cumulative abnormal return (|CAR​|), (3) the abnormal 3-day trading volume (VOLUME), and (4) the abnormal 3-day stock return volatility (VOLATILITY). The variable of interest, RMM, equals the number of risks disclosed by the auditor in the expanded audit report. Table 2 presents the results for the short window tests. The coefficient for the RMM variable in Panel A is insignificant using all four dependent variables 3 Companies House is a central depository where every company incorporated in the UK is required to file its accounts. Premium-listed companies incorporated in Jersey, Guernsey, The Isle of Man, and Ireland are not required to file their accounts at Companies House, so we obtain their annual reports from their websites. 4 UK companies typically release their annual reports after announcing their earnings. We obtain the annual report release dates from the London Stock Exchange website (www.​londo​nstoc​kexch​ange.​com/​ prices-​and-​marke​ts/​marke​ts/​prices.​htm), Morningstar (www.​morni​ngstar.​co.​uk/​uk/​NSM), ADVFN. com, and companies’ websites. In a few cases, we cannot identify the annual report release date. In these cases, we use the announcement of the Annual General Meeting (AGM) or the date of the actual AGM, because many companies release their annual reports at the same time that they announce or hold their AGMs. We perform sensitivity tests to ensure that our results are robust to excluding the companies with only AGM dates. 13 Why are expanded audit reports not informative to investors?… Table 1 Descriptive statistics Panel A: Number of RMMs by industry and year Year 1 Obs Agriculture, forestry, fishing, and mining 34 Year 2 Mean RMMs Obs Mean RMMs 4.29 39 4.36 Manufacturing 89 3.85 92 3.66 Utilities and construction 47 3.68 46 3.50 Wholesale and retail trade 54 4.13 56 3.92 Transportation and accommodation 31 3.87 32 3.53 Information and communication 40 4.15 38 4.23 Finance, insurance, and real estate 73 3.57 72 3.44 Professional, scientific, and technical services 62 3.83 38 3.58 Other services Total 48 3.83 41 3.92 478 3.87 454 3.77 Panel B: Descriptive statistics for the variables used in multivariate analysis Obs Mean Std. Dev 25th Pctl 50th Pctl 75th Pctl Dependent variables P CAR​ 932 6.893 9.056 1.433 3.507 8.280 932 0.000 0.033 − 0.016 − 0.001 0.014 |CAR| 932 0.023 0.024 0.007 0.015 0.029 VOLUME 919 − 0.163 0.766 − 0.498 − 0.099 0.228 VOLATILITY 932 − 0.808 1.592 − 1.676 − 0.660 0.229 Test variables RMM 932 3.824 1.447 3.000 4.000 5.000 RMM_ACCT​ 932 3.310 1.346 2.000 3.000 4.000 RMM_ENTITY 932 0.525 0.636 0.000 0.000 1.000 RMM_COMPANY 932 3.200 1.470 2.000 3.000 4.000 RMM_INDUSTRY​ 932 0.624 0.627 0.000 1.000 1.000 RMM_PRED 932 3.824 0.830 2.237 3.733 4.302 RMM_UE 932 − 0.0001 1.196 − 0.878 − 0.068 0.746 RMM_TONE 923 − 0.016 0.009 − 0.022 − 0.016 − 0.010 RMM_CHANGE 453 − 0.099 1.125 − 1.000 0.000 0.000 Control variables E 932 0.338 0.606 0.040 0.175 0.475 BV 932 2.717 3.471 0.667 1.557 3.268 14.859 SIZE 932 13.531 2.035 12.348 13.672 BTM 932 0.644 0.903 0.224 0.415 0.799 ANALYSTS 932 11.106 8.627 4.000 9.000 17.000 SEC_REG 932 0.053 0.223 0.000 0.000 0.000 PROBLEM 932 0.033 0.179 0.000 0.000 0.000 DISTRESS 932 0.181 0.385 0.000 0.000 0.000 LN_SUBS 932 3.660 1.509 2.639 3.611 4.559 GC 932 0.087 0.282 0.000 0.000 0.000 13 C. S. Lennox et al. Table 1 (continued) INVENTORY 932 0.079 0.117 0.000 0.021 0.115 RECEIVABLES 932 0.117 0.116 0.021 0.088 0.182 GOODWILL 932 0.130 0.158 0.000 0.065 0.216 FIXED ASSETS 932 0.346 0.362 0.034 0.231 0.568 ACQ 932 0.011 0.028 0.000 0.000 0.005 LAG_ACQ 932 0.010 0.027 0.000 0.000 0.004 SALES_GROWTH 932 0.106 0.416 − 0.033 0.037 0.127 DEF_TAX 932 0.017 0.027 0.000 0.003 0.026 EXTR_ITEMS 932 0.000 0.002 0.000 0.000 0.000 BUSY 924 0.512 0.500 0.000 1.000 1.000 AC_SIZE 924 3.539 0.930 3.000 3.000 4.000 TENURE 924 2.395 0.900 1.945 2.565 2.995 Table 1 presents descriptive statistics for our sample observations. Variable definitions are in Appendix B. In Panel A, the mean number of RMMs in year 1 is not significantly different from the mean number of RMMs in year 2 (t stat = 1.18) (CAR​, |CAR​|, VOLUME, and VOLATILITY).5 Next, we perform a battery of additional tests to explore whether there is any evidence of information content within subsets of RMM disclosures. Panel B classifies RMMs as entity-level or accountlevel risks (RMM_ACCT​ and RMM_ENTITY); Panel C classifies RMMs as idiosyncratic to the company or common to the industry (RMM_COMPANY and RMM_INDUSTRY​); Panel D uses the number of expected and unexpected RMMs (RMM_PRED and RMM_UE), which are estimated using an RMM prediction model (see Table 11 in Appendix C); Panel E measures the tone of the language in the RMMs (the RMM_TONE variable is defined in Appendix B); and Panel F measures the change in the number of RMMs from year 1 to year 2 (RMM_CHANGE). Combining these alternative RMM measures with our four dependent variables yields a total of 32 coefficient estimates for the RMM variables. Table 2 shows that 30 of the 32 coefficients are statistically insignificant. The only significant results are for RMM_PRED in the trading volume model (VOLUME) and for the RMM_TONE variable in the abnormal volatility model (VOLATILITY). The negative coefficient for RMM_PRED when trading volume is the dependent variable suggests that the number of predicted RMMs is associated with significantly less trading. The positive coefficient for RMM_TONE suggests that firms with more 5 To alleviate concerns that the insignificant results may be due to a lack of statistical power, we perform a power analysis to determine how small a market reaction we could detect with our sample. We find we have adequate power to detect a statistically significant coefficient for RMM (when CAR​ is the dependent variable) that is greater than or equal to 0.00187, implying a market reaction (CAR​) to an additional RMM that is greater than or equal to 0.187%. The corresponding statistic when |CAR| is the dependent variable is an effect size that is greater than or equal to 0.136% (both using one-tailed tests and power equal to 0.80). Because the economic magnitude of these effect sizes is so small, we believe we have adequate power to detect an economically meaningful market reaction to RMMs, if one exists. 13 Why are expanded audit reports not informative to investors?… Table 2 Short window tests of the incremental information content of auditors’ RMM disclosures CAR​ Panel A: All RMMs RMM |CAR| Volume Volatility − 0.001 0.000 − 0.001 0.052 (− 1.159) (0.875) (− 0.048) (1.233) Controls Included Included Included Included R-square 0.037 0.068 0.168 0.061 Panel B: Account-level vs entity-level RMMs RMM_ACCT​ RMM_ENTITY − 0.001 0.001 − 0.002 0.054 (− 0.870) (1.391) (− 0.099) (1.235) − 0.001 − 0.001 0.012 0.086 (− 0.432) (− 0.632) (0.313) (0.915) Controls Included Included Included Included R-square 0.036 0.069 0.167 0.061 Panel C: Company-specific vs industry-level RMMs RMM_COMPANY RMM_INDUSTRY​ − 0.001 0.000 0.000 0.051 (− 1.165) (0.832) (0.009) (1.202) − 0.001 0.001 − 0.020 0.062 (− 0.339) (0.553) (− 0.472) (0.593) Controls Included Included Included Included R-square 0.037 0.068 0.169 0.061 Panel D: Predicted vs unexpected RMMs RMM_PRED RMM_UE − 0.005 − 0.004 − 0.444** 0.226 (− 0.650) (− 0.896) (− 2.389) (0.498) − 0.001 0.000 − 0.003 0.052 (− 1.173) (0.844) (− 0.182) (1.241) Controls Included Included Included Included R-square 0.037 0.069 0.173 0.061 Panel E: RMM tonal language RMM_TONE − 0.113 0.054 2.901 12.080** (− 1.150) (0.966) (1.196) (2.021) Controls Included Included Included Included R-square 0.035 0.070 0.167 0.067 Panel F: Change in RMMs from year 1 to year 2 RMM_CHANGE 0.001 − 0.000 0.002 − 0.029 (0.590) (− 0.563) (0.075) (− 0.439) Controls Included Included Included Included R-square 0.046 0.105 0.195 0.080 13 C. S. Lennox et al. Table 2 (continued) Table 2 presents short-window (i.e., 3-day) tests of the incremental information content of the auditors’ RMM disclosures. The 3-day window is centered on the annual report date (i.e., the date the audit report would be disclosed to the public). Column 1 presents cumulative abnormal returns. Column 2 presents unsigned cumulative abnormal returns. Column 3 presents abnormal trading volume. Column 4 presents abnormal trading volatility. ***, **, and * denote statistical significance at the 1%, 5%, and 10% levels, respectively (two-tailed). T-statistics are reported in parentheses below each coefficient. The estimated models use robust regression to reduce the influence of outlier observations. Variable definitions are provided in Appendix B. The control variables are SIZE, BTM, ANALYSTS, SEC_REG, PROBLEM, DISTRESS, LN_SUBS, GC, INVENTORY, RECEIVABLES, GOODWILL, FIXED_ASSETS, ACQ, LAG_ACQ, SALES_GROWTH, EXTR_ITEMS, and DEF_TAX, plus year fixed effects, auditor fixed effects, and industry fixed effects. Following prior literature, |CAR| is included as a control variable when trading volume is the dependent variable. The sample size when CAR​ and |CAR| are the dependent variables is 932 except when the independent variable of interest is RMM_TONE (N = 923) and RMM_CHANGE (N = 452). The sample size when VOLUME is the dependent variable is 919 except when the independent variable is RMM_TONE (N = 910) and RMM_CHANGE (N = 444). The sample size when Volatility is the dependent variable is 931 except when RMM_TONE (N = 922) and RMM_CHANGE (N = 452) are the variables of interest negative RMM disclosures experience higher volatility. We do not draw strong inferences from these two coefficients due to a lack of consistent results across the four dependent variables, coupled with the fact that random chance will result in the occasional spurious result. Next, we perform cross-sectional tests after partitioning companies based on the strength of the information environment. The FRC argued that the benefits of expanded audit reports may be “particularly important for audited entities where there are fewer sources of other information, including smaller companies” (FRC 2016, p. 4). Thus, RMMs might be informative for companies in relatively poor information environments. To examine this possibility, we partition the sample into (1) large versus small companies, (2) companies with high versus low analyst following, (3) companies with large versus small shareholders, and (4) companies whose RMM disclosures contain an above (below) median number of words expressing uncertainty. Table 3 presents these partitioned results using all four market reaction variables (CAR​ in Panel A, |CAR​| in Panel B, VOLUME in Panel C, and VOLATILITY in Panel D). We find that only one of the 32 RMM coefficients in Table 3 is statistically significant at the 95% confidence level. Specifically, the signed CAR​ is significantly more negative for companies receiving a larger number of RMM disclosures within the subsample of companies that receive an aboveaverage number of uncertainty words (Panel A). Again, we do not put much weight on this one significant coefficient because at least one of the 32 coefficients would likely attain statistical significance at the 95% confidence level due to chance. Finally, we consider whether RMM disclosures might inform companies’ auditor appointment decisions. For instance, prior studies find that the auditor turnover rate is significantly higher after auditors disclose going-concern problems or material internal control weaknesses at their clients (Lennox 2000; Chen et al. 2016; Newton et al. 2016). To the extent that RMM disclosures convey negative news about a company, we would expect more auditor–client disagreements and more auditor turnover 13 446 RMM (2) (1) 0.026 VOLUME VOLUME − 0.005 Low High Firm size Panel C: 3-day abnormal trading volume 446 0.092 483 0.095 Obs R-square (1.370) Included (0.247) (2) 0.001 (1) 0.000 |CAR| |CAR| Included Controls RMM Low High Firm size Panel B: 3-day unsigned cumulative abnormal returns 0.098 483 0.068 Obs R-square (− 0.713) Included (− 1.002) (2) − 0.001 (1) − 0.001 CAR​ CAR​ Included Controls RMM Low High Firm size Panel A: 3-day cumulative abnormal returns − 0.004 (3) VOLUME High Analyst following 0.111 504 Included (0.837) 0.000 (3) |CAR| High Analyst following 0.049 504 Included (− 0.762) − 0.001 (3) CAR​ High Analyst following 0.052 (4) VOLUME Low 0.088 425 Included (− 0.236) − 0.000 (4) |CAR| Low 0.140 425 Included (0.299) 0.000 (4) CAR​ Low 0.121 472 Included (− 1.394) − 0.001 (6) CAR​ Low 0.117 472 Included (0.341) 0.000 (6) |CAR| Low − 0.015 (5) VOLUME High 0.028 (6) VOLUME Low Large shareholders 0.101 457 Included (1.071) 0.001 (5) |CAR| High Large shareholders 0.077 457 Included (− 0.146) − 0.000 (5) CAR​ High Large shareholders 0.047* (7) VOLUME High Uncertainty 0.074 469 Included (0.330) 0.000 (7) |CAR| High Uncertainty 0.084 469 Included (− 3.267) − 0.003*** (7) CAR​ High Uncertainty − 0.033 (8) VOLUME Low 0.117 462 Included (0.828) 0.000 (8) |CAR| Low 0.092 462 Included (1.218) 0.001 (8) CAR​ Low Table 3 Short window tests of the incremental information content of auditors’ RMM disclosures—cross-sectional analysis partitioning companies based on the information environment Why are expanded audit reports not informative to investors?… 13 13 445 (− 0.272) 0.055 504 Included (0.746) 0.040 (3) VOLATILITY High Analyst following 0.194 504 Included (1.239) 0.128 424 Included (1.122) 0.083 (4) VOLATILITY Low 0.174 411 Included (− 0.434) (1.642) 0.020 467 Included 0.113 457 Included (0.839) 0.056 (5) VOLATILITY High 0.124 472 Included (0.347) 0.019 (6) VOLATILITY Low Large shareholders 0.156 449 Included (1.758) 0.110 469 Included (0.392) 0.025 (7) VOLATILITY High Uncertainty 0.242 462 Included (− 1.400) 0.130 461 Included (1.269) 0.075 (8) VOLATILITY Low 0.187 456 Included Table 3 presents short-window (i.e., 3-day) tests of the incremental information content of the auditors’ RMM disclosures after partitioning companies on proxies for their information environment. The cross-sectional partitions are based on above versus below median firm size, median analyst following, median percentage ownership by large shareholders, and the median number of words expressing uncertainty included in the text of the audit report. ***, **, and * denote statistical significance at the 1%, 5%, and 10% levels, respectively (two-tailed). T-statistics are reported in parentheses below each coefficient. The estimated models use robust regression to reduce the influence of outlier observations. The control variables are: SIZE, BTM, ANALYSTS, SEC_REG, PROBLEM, DISTRESS, LN_SUBS, GC, INVENTORY, RECEIVABLES, GOODWILL, FIXED_ASSETS, ACQ, LAG_ACQ, SALES_GROWTH, EXTR_ITEMS, and DEF_TAX, plus year fixed effects, auditor fixed effects, and industry fixed effects. Variable definitions are in Appendix B 0.127 483 0.079 Obs R-square (0.933) Included (1.035) (2) 0.066 (1) 0.055 VOLATILITY VOLATILITY Included Controls RMM Low High Firm size Panel D: 3-day abnormal trading volatility 433 0.127 482 0.208 Obs R-square (0.630) Included (− 0.380) Included Controls Table 3 (continued) C. S. Lennox et al. Why are expanded audit reports not informative to investors?… events after auditors disclose a larger number of RMMs. In contrast, if RMM disclosures do not convey new information, we would not expect to find a relationship between auditor turnover and RMM disclosures. Table 4 shows that the rate of auditor turnover is unrelated to the number of RMMs. This finding corroborates the main findings from our market reaction tests, which suggest that RMMs are not perceived by investors or companies as conveying negative news. In the remainder of our analysis, we examine alternative explanations for why RMMs are perceived as uninformative. 3.4 Do investors initially underreact to the information contained in the RMMs? A potential explanation for the insignificant market reactions is that the RMM disclosures do contain valuable information but investors do not immediately respond to it.For example, prior research documents that investors do not attend to all the information at the audit report release date and that modified audit reports are associated with significantly negative long-window abnormal returns (Kausar et al. 2009; Czerney et al. 2018). To investigate this explanation, we construct long-window buy-and-hold abnormal returns (BHARs) for the 1-month, 3-month, 6-month, and 12-month windows following the release of the expanded audit reports. As shown in Table 5, we find the long-window buy-and-hold abnormal returns are not significantly related to any of our RMM measures (i.e., RMM, RMM_ACCT​, RMM_ ENTITY, RMM_COMPANY, RMM_INDUSTRY​, RMM_PRED, RMM_UE, RMM_ TONE, and RMM_CHANGE). These results are inconsistent with the argument that RMM disclosures are informative but investors do not immediately respond to them. 3.5 Do RMM disclosures lack value relevance? A second potential explanation for the lack of significant information content is that RMM disclosures fail to reflect risks that are value relevant. Auditors perform substantive testing to detect and correct material misstatements and reduce financial reporting risks to an acceptable level. Therefore, auditors’ RMM disclosures may reference risks that were identified at the start of the audit but were appropriately mitigated during the audit and thus are irrelevant to investors at the time the audited financial statements are released. Theoretical and empirical research suggests that value relevance models are useful for assessing investor perceptions of the relevance of accounting numbers to firm valuation (Ohlson 1995; Feltham and Ohlson 1995; Barth et al. 2001). Nevertheless, there is an important distinction between value relevance and informativeness, because accounting numbers can be value relevant but not incrementally informative if the accounting information is preceded by more timely information (Barth et al. 2001). We estimate value relevance models to test whether the RMM disclosures are value relevant. P = 𝛼0 + đť›˝1 E + đť›˝2 RMM + đť›˝3 E × RMM + CONTROLS + 𝜀 (2) 13 C. S. Lennox et al. Table 4 Auditor change analysis (dependent variable = AUD_CHANGEt+1) (1) RMM (2) (3) (4) (5) (6) 0.039 (0.340) RMM_ACCT​ 0.106 (0.884) RMM_ENTITY − 0.135 (− 0.524) RMM_COMPANY 0.042 (0.355) RMM_INDUSTRY​ 0.010 (0.035) RMM_PRED − 0.169 (− 0.318) RMM_UE 0.047 (0.401) RMM_TONE 8.267 (0.498) RMM_CHANGE − 0.111 (− 0.539) Controls Included Included Included Included Included Included Observations 924 924 924 924 916 404 ROC 0.722 0.725 0.722 0.720 0.726 0.828 ***, **, and * denote statistical significance at the 1%, 5%, and 10% levels, respectively (two-tailed). Z-statistics are reported in parentheses below each coefficient. The auditor change models control for SIZE, BTM, ANALYSTS, SEC_REG, PROBLEM, DISTRESS, LN_SUBS, GC, AC_SIZE, BUSY, and TENURE, plus year fixed effects, auditor fixed effects, and industry fixed effects. The sample size in Column 6 is reduced because the RMM_CHANGE variable is only available in year 2 and industry and audit firm fixed effects perfectly predict the dependent variable for some observations P = 𝛾0 + 𝛿1 BV + 𝛿2 RMM + 𝛿3 BV × RMM + CONTROLS + 𝜀 (3) where: P = company i’s stock price 30 trading days after the audit report is released to investors; E = earnings per share for company i in year t; BV = net assets per share for company i in year t; and. RMM = the number of risks of material misstatement disclosed in company i’s audit report. To the extent that RMMs are value relevant, we expect the valuation coefficients on E and BV to be smaller when auditors report more RMMs. Hence, we predict negative coefficients on the interaction terms E × RMM and BV × RMM; i.e., β3 < 0 and δ3< 0. 13 Why are expanded audit reports not informative to investors?… We estimate Eqs. (2) and (3) separately because including E and BV (and their interactions with RMM) in the same model results in severe multicollinearity problems (some variance inflation factors exceed 20 in the joint specification). The results are shown in Columns (1) and (2) of Table 6. We find that the valuation coefficients on earnings per share and net assets per share are significantly smaller when auditors disclose more RMMs. Specifically, the coefficient on E × RMM is − 0.364 (t-stat. = − 3.687), and the coefficient on BV × RMM is − 0.081 (t-stat. = − 4.079).6 These findings are inconsistent with RMM disclosures being uninformative because they fail to reflect value relevant information. To evaluate the economic significance of these results, we compute the change in the valuation coefficients as the number of RMMs increases from the 25th percentile value (3.00) to the 75th percentile (5.00). Over this range, the valuation coefficients on earnings per share (net assets per share) fall from 11.63 to 10.90 (1.43 to 1.27). Therefore, the valuation coefficients remain positive, but their magnitude is significantly attenuated when auditors disclose more risks of material misstatement. To provide additional evidence that RMMs are value relevant, we examine whether companies exhibit less persistent (i.e., more uncertain) performance when they receive more RMMs. We test whether differences in the persistence of performance are related to RMMs by estimating Eqs. (4) and (5): ROAit+1 = 𝛼0 + đť›˝1 ROAit + đť›˝2 RMMit + đť›˝3 ROAit × RMMit + CONTROLS + 𝜀it−1 (4) CFOit+1 = 𝛼0 + đť›˝1 CFOit + đť›˝2 RMMit + đť›˝3 CFOit × RMMit + CONTROLS + 𝜀it−1 (5) where: ROA = a company’s return on assets (net income divided by total assets); CFO = a company’s cash flow from operations (scaled by total assets); and. E = earnings per share for company i in year t. We expect the number of RMMs to be negatively related to the persistence in a company’s performance (i.e., β3< 0). The results for Eqs. (4) and (5) are reported in Table 7. As expected, the coefficients on ROAit × RMMit and CFOit × RMMit are negative and statistically significant (t-stats. = − 2.021 and − 5.621, respectively). Therefore, companies with more RMMs exhibit a lower persistence in performance.7 In a further untabulated analysis, we test whether the difference in persistence is related to different types of RMMs (i.e., RMM_ACCT​ and RMM_ENTITY, RMM_COMPANY and RMM_INDUSTRY​, RMM_PRED and RMM_UE, RMM_TONE and RMM_CHANGE). In these tests we find that nine of the 18 interaction coefficients are statistically significant (p < 0.05 6 The significant positive coefficient on RMM reflects that larger companies receive more RMMs (see Table 11 in Appendix C) and larger companies tend to have higher stock prices. However, the main effect in these models captures the effect of RMM when earnings or book value equals zero, which is not meaningful. 7 We also examine whether RMMs are predictive of future ROA and future CFO. After dropping the interaction terms (ROAit × RMMit and CFOit × RMMit), we find that RMMs are negatively associated with future CFO but not future ROA. 13 C. S. Lennox et al. Table 5 Long window tests of the incremental information content of auditors’ RMM disclosures (1-, 3-, 6-, and 12-month cumulative buy and hold abnormal returns) Panel A: Descriptive statistics for buy-and-hold abnormal returns (BHAR) Std. Dev 25th Pctl 50th Pctl 75th Pctl 1 month Obs 876 Mean 0.007 0.067 − 0.033 0.007 0.041 3 months 876 0.015 0.123 − 0.053 0.017 0.081 6 months 876 0.020 0.178 − 0.072 0.027 0.115 12 months 876 0.025 0.303 − 0.156 0.033 0.208 Panel B: Long window buy-and-hold abnormal returns (BHAR) with RMM as the independent variable of interest 1 month 3 months 6 months 12 months RMM − 0.000 − 0.002 − 0.002 − 0.012 (− 0.078) (− 0.725) (− 0.434) (− 1.497) Controls Included Included Included Included Observations 876 876 876 876 R-squared 0.098 0.107 0.168 0.181 Panel C: Long window buy-and-hold abnormal returns (BHAR) with account-level versus entitylevel RMMs as the independent variables of interest 1 month 3 months 6 months 12 months RMM_ACCT​ − 0.000 − 0.004 − 0.003 − 0.010 (− 0.028) (− 1.165) (− 0.532) (− 1.239) RMM_ENTITY 0.002 0.009 0.007 − 0.011 (0.461) (1.281) (0.675) (− 0.630) Controls Included Included Included Included Observations 876 876 876 876 R-squared 0.099 0.108 0.168 0.180 Panel D: Long window buy-and-hold abnormal returns (BHAR) with predicted and unexpected RMMs as the independent variables of interest 1 month 3 months 6 months 12 months RMM_PRED 0.007 0.015 0.044 − 0.027 (0.352) (0.447) (0.887) (− 0.312) RMM_UE − 0.000 − 0.002 − 0.002 − 0.012 (− 0.070) (− 0.712) (− 0.466) (− 1.499) Controls Included Included Included Included Observations 876 876 876 876 R-squared 0.098 0.108 0.169 0.181 Panel E: Long window buy-and-hold abnormal returns (BHAR) with company-level and industry-common RMMs as the independent variables of interest 1 month 3 months 6 months 12 months RMM_COMPANY − 0.000 − 0.003 − 0.003 − 0.013 (− 0.024) (− 0.824) (− 0.715) (− 1.562) RMM_INDUSTRY​ − 0.001 0.003 0.014 − 0.000 (− 0.320) (0.324) (1.232) (− 0.074) 13 Why are expanded audit reports not informative to investors?… Table 5 (continued) Controls Included Included Included Included Observations 876 876 876 876 R-squared 0.098 0.108 0.171 0.181 Panel F: Long window buy-and-hold abnormal returns (BHAR) with RMM tone as the independent variable of interest 1 month 3 months 6 months 12 months RMM_TONE − 0.016 − 0.221 0.009 1.391 (− 0.068) (− 0.501) (0.014) (1.245) Controls Included Included Included Included Observations 870 870 870 870 R-squared 0.100 0.108 0.170 0.178 Panel G: Long window buy-and-hold abnormal returns (BHAR) with the change in RMMs from year 1 to year 2 as the independent variable of interest 1 month 3 months 6 months 12 months RMM_CHANGE − 0.001 − 0.006 − 0.000 0.014 (− 0.179) (− 1.220) (− 0.054) (1.080) Controls Included Included Included Included Observations 410 410 410 410 R-squared 0.162 0.205 0.261 0.190 ***, **, and * denote statistical significance at the 1%, 5%, and 10% levels, respectively (two-tailed). T-statistics are reported in parentheses below each coefficient. The models include the same controls as Tables 2 and 3 plus fixed effects for the year-end announcement month to control for cross-sectional correlation in returns among sample observations. Models are estimated using robust regression to reduce the influence of outlier observations. The analysis in Table 5 excludes observations that exit the sample in the 12 months following the audit report release date. The sample size is smaller in Panel G because it includes only observations from the second year of adoption using two-tailed tests). Together, the analyses in Tables 6 and 7 do not support the argument that RMMs are uninformative because they fail to reflect value relevant information. 3.6 Did investors already know about the risks before auditors started disclosing them? Thus far, we have found that RMM disclosures do not convey significant incremental information to investors (Tables 2, 3, 4 and 5), but are value relevant (Tables 6 and 7). A potential answer to this conundrum is that auditors’ risk disclosures are relevant to investors but investors already knew about the risks before auditors began disclosing them. If so, the RMM disclosures would be value relevant but not incrementally informative. We take two complementary approaches to testing this explanation. First, we reestimate the value relevance models (Eqs. 2 and 3) with data on stock prices, earnings, and net assets from the prior year (i.e., year t-1) and RMM disclosures from the current year (i.e., year t). This approach allows us to determine whether investors 13 C. S. Lennox et al. Table 6 The value relevance of RMMs (dependent variable = Pit) (1) (2) 12.721*** Eit (31.229) Eit × RMMit − 0.364*** (− 3.687) BVit 1.681*** (21.754) BVit × RMMit − 0.081*** (− 4.079) RMMit 0.331*** 0.116 (4.668) (1.365) Constant 0.041 0.667 (0.069) (1.046) Observations 932 932 R-squared 0.869 0.750 Table 6 presents equity valuation models using RMMs reported in the first two years of adoption. ***, **, and * denote statistical significance at the 1%, 5%, and 10% levels, respectively (two-tailed). T-statistics are reported in parentheses below each coefficient. The models are estimated using robust regression to reduce the influence of outlier observations. The models include controls for year fixed effects, industry fixed effects, auditor fixed effects, and going concern opinions. Variable definitions are in Appendix B were pricing the risks before auditors started disclosing them in expanded audit reports. In particular, we estimate the following equity valuation models: Pit−1 = 𝛼0 + đť›˝1 Eit−1 + đť›˝2 RMMit + đť›˝3 Eit−1 × RMMit + CONTROLS + 𝜀it−1 (6) Pit−1 = 𝛾0 + 𝛿1 BVit−1 + 𝛿2 RMMit + 𝛿3 BVit−1 × RMMit + CONTROLS + 𝜀 (7) where: Pit-1 = company i’s stock price, 30 trading days after the audit report for fiscal year t-1 is publicly released to investors; Eit-1 = earnings per share for company i in year t-1; BVit-1 = net assets per share for company i in year t-1; and. RMMit = the number of RMMs in company i’s audit report in year t. If investors already knew in year t-1 which companies were more risky, we would expect negative coefficients on Eit-1 × RMMit and BVit-1 × RMMit; i.e., β3 < 0 and δ3< 0. The results for Eqs. (6 and 7) are shown in Columns (1) and (2) of Table 8. We find that the coefficients for the interaction terms Eit-1 × RMMit and BVit-1 × RMMit are negative and statistically significant (t stats = − 5.286 and − 8.587 respectively). These results suggest that investors already knew which companies were more risky before auditors started disclosing the RMMs. A plausible explanation for the results in Columns (1) and (2) is that investors already knew about the risks because the RMMs in year 2 had already been disclosed 13 Why are expanded audit reports not informative to investors?… Table 7 Auditors’ RMMs and the persistence of accounting performance RMMit ROAit (1) (2) ROAit+1 CFOit+1 − 0.000 0.002* (− 0.244) (1.670) 0.897*** (43.671) RMMit × ROAit − 0.009** (− 2.021) CFOit 0.963*** (25.209) RMMit × CFOit − 0.058*** (− 5.621) Controls Included Included Obs 921 739 R-square 0.910 0.811 ***, **, and * denote statistical significance at the 1%, 5%, and 10% levels, respectively (two-tailed). T-statistics are reported in parentheses below each coefficient. The estimated models use robust regression to reduce the influence of outlier observations. Variable definitions are in Appendix B. The control variables are SIZE, BTM, ANALYSTS, SEC_REG, PROBLEM, DISTRESS, LN_SUBS, GC, INVENTORY, RECEIVABLES, GOODWILL, FIXED_ASSETS, ACQ, LAG_ACQ, SALES_GROWTH, EXTR_ITEMS, and DEF_TAX, plus year fixed effects, auditor fixed effects, and industry fixed effects. The sample sizes are smaller in Table 7 due to missing one-year-ahead data and limited data coverage for operating cash flows by auditors in year 1 (i.e., in the first year of adoption). To ensure that this timing issue is not driving our results, we distinguish between RMMs that the auditor had already disclosed (RMM_PREV) and RMMs that the auditor had not already disclosed (RMM_NPREV). In the first year of adoption (year 1), there are no previous RMM disclosures, so RMM_NPREV = RMM for every observation. In year 2, we partition the RMM disclosures into those that had previously been disclosed in year 1 (RMM_ PREV) and those that had not previously been disclosed in year 1 (RMM_NPREV). We then re-estimate Eqs. (4 and 5), replacing the ­RMMit variable with RMM_PREVit and RMM_NPREVit. The results are shown in Columns (3) and (4) of Table 8. We find significant negative coefficients on Eit-1 × RMM_NPREVit (t-stat. = − 3.053) and BVit-1 × RMM_NPREVit (t-stat. = − 7.405). Therefore, the valuation coefficients on earnings and net assets in year t-1 are significantly smaller for companies whose auditors disclosed more RMMs in the following year (year t). These findings are consistent with investors having information in year t-1 about risks that auditors would not disclose until the following year (year t). Further, we find significant negative coefficients on Eit-1 × RMM_PREVit (t-stat. = − 5.261) and BVit-1 × RMM_PREVit (t-stat. = − 6.979). Therefore, the valuation coefficients on earnings and net assets in year t-1 are significantly smaller for the companies whose RMMs had already been disclosed in the previous year (year t-1). Overall, these 13 C. S. Lennox et al. findings indicate that investors were informed about the risks in the year before the auditors started disclosing them in expanded audit reports.8 These findings provide our first evidence suggesting that investors were already aware of the heightened risks at companies that went on to receive more RMMs from their auditors. Because Table 8 (Columns 3 and 4) partitions RMMs into those disclosed (not disclosed) by the auditor in the previous year, all of the risks in the first year of adoption (i.e., year 1) are, by construction, not previously disclosed by the auditor (RMM_NPREVit). A limitation of this analysis is that at least some of the year 1 risks may have been previously disclosed by the company in the prior year. For example, companies may have disclosed the risks in their previous annual reports, conference calls, or earnings announcements. Therefore, in our next analysis we examine whether the year 1 RMMs were previously disclosed by the company. We expect that an earlier disclosure would make the auditors’ RMM disclosures in year 1 largely redundant or superfluous. For instance, if the company had already disclosed a risk relating to revenue recognition (e.g., that the company uses a complex percentage of completion method for revenue recognition), the same disclosure by the auditor in year 1 would be largely redundant even though the auditor had not previously disclosed the risk. Thus, our next analysis focuses on the specific RMMs in year 1 that had already been disclosed by companies prior to auditors disclosing them in expanded audit reports.9 Given the significant costs of hand-collecting the earlier disclosures, we perform this analysis on a random subset of 243 companies (approximately 50% of the sample). We code each RMM disclosure as either “already disclosed” by the company (RMM_AD_Y1) or not already disclosed (RMM_NEW_Y1): “already disclosed” means we are able to find that the risk was already disclosed by the company prior to the auditor’s disclosure in year 1, whereas “new” means we cannot find any evidence that the risk was disclosed by the company before being disclosed by the auditor in year 1. We search for the “already disclosed” RMMs by examining each company’s year t-1 annual report, prior earnings announcement, or conference call transcript. These risk disclosures are typically contained in the audit committee report or the “key/critical accounting estimates and areas of significant judgment” note to the financial statements. Appendix D provides an example of an “already disclosed” RMM. The “new” RMMs are the risks that we cannot find in the earlier disclosures. These “new” RMM disclosures could be incrementally informative given that we find no evidence that they were previously disclosed. However, we cannot rule out the possibility that investors knew about these “new” risks through other disclosure channels, because it is not feasible for us to 8 We perform one additional test to further ensure that the market already knew about the RMM information. Specifically, we convert Model 2 into a changes model where change in price from year t-1 to year t is the dependent variable and unexpected earnings (year-over-year change from year t-1 to year t) and unexpected RMMs (RMM_UE) are the independent variables of interest. We do not find significant coefficients on unexpected earnings, unexpected RMMs, or the interaction term, indicating that the market was already aware of the RMM information. We thank the editor for suggesting this additional test. 9 We obtain all available prior earnings announcements and conference call transcripts from company websites, Datastream, and the Thomson Reuters Eikon database. While not all conference call transcripts were available, we do not expect the missing reports to affect our inferences because most of the “already disclosed” disclosures were identified in prior earnings announcements or prior annual reports rather than in prior conference calls. 13 Why are expanded audit reports not informative to investors?… Table 8 Value relevance tests in year t-1 using year t RMM disclosures (dep. var. = Pit-1) (1) Eit-1 Eit-1 × RMMit (2) (3) 13.873*** 13.581*** (32.497) (31.060) (4) − 0.525*** (− 5.286) Eit-1 × RMM_ NPREVit − 0.325*** (− 3.053) Eit-1 × RMM_PREVit − 0.637*** (− 5.261) BVit-1 BVit-1 × RMMit 1.648*** 1.642*** (24.624) (22.737) − 0.142*** (− 8.587) BVit-1 × RMM_NPREVit − 0.134*** (− 7.405) BVit-1 × RMM _PREVit − 0.160*** (− 6.979) RMMit 0.205*** 0.211*** (3.177) (2.914) RMM_NPREVit RMM_ PREVit Constant 0.144** 0.209*** (2.124) (2.665) 0.294*** 0.320*** (3.800) (3.464) 0.720 0.102 0.705 0.052 (1.380) (0.193) (1.325) (0.093) Observations 967 967 937 937 R-Squared 0.876 0.734 0.876 0.719 Table 8 presents equity valuation models for year t-1 using RMMs reported in year t. ***, **, and * denote statistical significance at the 1%, 5%, and 10% levels, respectively (two-tailed). T-statistics are reported in parentheses below each coefficient. The models are estimated using robust regression to reduce the influence of outlier observations. The models include controls for year fixed effects, industry fixed effects, auditor fixed effects, and going concern opinions. Variable definitions are in Appendix B search every possible source of information. (The UK does not have an equivalent of Regulation FD, which means that managers are permitted to communicate privately with investors. Given that such communications would not be publicly observable, we cannot include them in our search for “already disclosed” RMMs.) In the second year of adoption (year 2), RMM_AD_Y2 and RMM_NEW_Y2 are coded based on whether or not the RMM was reported by the auditor in the prior year. Table 9, Panel A reports descriptive statistics for the RMM_AD_Y1, RMM_NEW_Y1, RMM_AD_Y2, and RMM_NEW_Y2 variables. Of the RMMs disclosed in year 1, we find that 67.22% had already been disclosed by the company in the previous year (RMM_AD_ Y1). For the remaining 36.47% of year 1 RMMs, we were unable to find any evidence of 13 C. S. Lennox et al. a prior disclosure by the company (RMM_NEW_Y1). Of the RMMs disclosed in year 2, we find that 73.45% had already been disclosed by the auditor in year 1 (RMM_AD_Y2). Only 26.54% of the year 2 RMMs had not already been disclosed by the auditor in year 1 (RMM_NEW_Y2). Overall, these descriptive statistics suggest that investors would have known about the vast majority of RMMs before auditors disclosed them in either year 1 or year 2. In year 1, most of the risks had already been disclosed by companies, and in year 2 most of the risks had already been disclosed by auditors in the prior year. Thus, the majority of RMMs appear to be stale rather than informative. This is consistent with our evidence that the RMMs do not appear to be incrementally informative (Tables 2, 3, 4 and 5), that RMMs are value relevant (Tables 6 and 7), and that investors seem to have known which companies were more risky before auditors began disclosing the RMMs in expanded audit reports (Table 8). Table 9, Panel B presents the short-window market reaction tests for the “already disclosed” RMMs in years 1 and 2 (RMM_AD_Y1 and RMM_AD_Y2) and the “new” RMMs in each year (RMM_NEW_Y1 and RMM_NEW_Y2). As expected, Table 9, Panel B shows that the short-window market reactions are insignificant for the “already disclosed” RMMs in years 1 and 2 (RMM_AD_Y1 and RMM_AD_Y2). This is not surprising, as the “already disclosed” RMMs are not expected to be incrementally informative, given that these risks had already been disclosed. We find the “new” RMMs (RMM_NEW_Y1 and RMM_NEW_Y2) are also statistically insignificant in each year as well as in the two years combined (RMM_NEW_Y1&Y2).10 For completeness, we also examine whether “new” and “already disclosed” RMMs are associated with auditor changes and long-window abnormal returns. In both sets of analysis (untabulated), we find the coefficients for “new” and “already disclosed” RMMs are not statistically significant. Collectively, these results indicate that investors do not find RMMs to be incrementally informative even when we are unable to find evidence that the RMMs had already been disclosed. While it may seem surprising that the “new” RMMs are not incrementally informative, Table 9, Panel A shows that the average number of RMMs per company is 3.79 and the typical company has only 1.10 RMMs that had not already been disclosed (i.e., the mean value of RMM_NEW_Y1&Y2 is 1.10). From an investor’s perspective, that is not a lot of “new” information to react to, especially when one considers that the earnings number is a conglomeration of many different accounts not labeled as RMMs. Thus, investors may pay little attention to the “new” RMMs given that most RMMs had already been disclosed. It is also possible that the “new” RMMs had not been disclosed previously because they were less important than the other RMMs, in which case the “new” RMMs would be less likely to trigger a market reaction. Another possibility is that investors may have considered the “new” RMMs less important because they reflect one-off temporary risks rather than long-term persistent risks. Finally, the “new” RMMs may not 10 In Table 9, we have sufficient power to detect a significant coefficient for a new RMM in the CAR analysis that is greater than or equal to − 0.003 (i.e., a market reaction of − 0.3%) at conventional levels (alpha equal to 0.05 and power equal to 80%). The corresponding effect size for |CAR| is a market reaction to a new RMM that is greater than or equal to − 0.22%. Due to the small economic magnitude of these effect sizes, we conclude that we have adequate power to detect an economically meaningful market reaction, if one existed. 13 Why are expanded audit reports not informative to investors?… Table 9 “New” versus “already disclosed” RMM disclosures Panel A: Descriptive statistics for “new” versus “already disclosed” RMMs in the first and second years of adoption Mean per Firm-year % of total RMMs RMM_NEW_Y1 1.29 36.47% RMM_AD_Y1 2.56 67.22% Firm-year observations 235 RMM_NEW_Y2 1.00 26.54% RMM_AD_Y2 2.77 73.45% Firm-year observations 453 RMM_NEW_Y1&Y2 1.10 28.69% RMM_AD_Y1&Y2 2.69 71.31% Firm-year observations 688 Panel B: The short window market reactions of “new” and “already disclosed” RMMs CAR​ |CAR| VOLUME VOLATILITY (1) (2) (3) (4) Year 1 RMM_NEW_Y1 − 0.003 0.001 0.032 0.041 (− 1.567) (0.598) (0.637) (0.318) − 0.000 0.000 0.055 0.046 (− 0.018) (0.486) (1.306) (0.435) Controls Included Included Included Included Observations 234 234 235 235 R-squared 0.184 0.179 0.322 0.136 RMM_AD_Y1 Year 2 RMM_NEW_Y2 − 0.000 0.001 − 0.009 0.053 (− 0.011) (1.179) (-0.291) (0.705) − 0.001 − 0.000 − 0.013 − 0.047 (− 0.919) (− 0.607) (− 0.457) (− 0.681) Controls Included Included Included Included Observations 453 453 445 453 R-squared 0.047 0.110 0.195 0.082 RMM_AD_Y2 Year 1 & year 2 RMM_NEW_Y1&Y2 − 0.001 0.001 0.000 0.049 (− 0.621) (1.075) (0.005) (0.804) − 0.001 − 0.000 0.010 0.001 (− 0.777) (− 0.276) (0.438) (0.026) Controls Included Included Included Included Observations 688 688 680 688 R-squared 0.058 0.078 0.171 0.056 RMM_AD_Y1&Y2 Table 9 presents short-window (i.e., 3-day) tests of the incremental information content of auditors’ RMM disclosures, partitioned on whether or not the RMM was previously disclosed. Given the significant costs of hand-collecting the earlier disclosures, the sample sizes related to the RMM_NEW_Y1 and RMM_AD_Y1 variables represent a random subset of 243 companies (approximately 50% of the sample). The 3-day window is centered on the annual report date (i.e., the date the audit report is disclosed to the public). ***, **, and * denote statistical significance at the 1%, 5%, and 10% levels, respectively 13 C. S. Lennox et al. Table 9 (continued) (two-tailed). T-statistics are reported in parentheses below each coefficient. The estimated models use robust regression to reduce the influence of outlier observations. Variable definitions are in Appendix B. The control variables are SIZE, BTM, ANALYSTS, SEC_REG, PROBLEM, DISTRESS, LN_SUBS, GC, INVENTORY, RECEIVABLES, GOODWILL, FIXED_ASSETS, ACQ, LAG_ACQ, SALES_GROWTH, EXTR_ITEMS, and DEF_TAX, plus year fixed effects, auditor fixed effects, and industry fixed effects. |CAR| is included as a control variable when trading volume is the dependent variable. The sample size for abnormal trading volume in smaller due to missing data on trading volume for some observations be informative if investors were already informed about them through sources that we were unable to capture in our data collection. We acknowledge the limitation that we are unable to empirically validate why the “new” RMMs are uninformative. We encourage future research to investigate these possibilities. 4 Conclusion Gutierrez et al. (2018) investigate whether the introduction of expanded audit reports in the UK had significant capital market consequences for premium-listed companies. Using a difference-in-differences research design, with premium-listed companies as the treatment group and companies listed on the Alternative Investment Market as the control group, their study finds that RMM disclosures have no significant effect on cumulative signed abnormal returns, cumulative absolute abnormal returns, abnormal trading volume, and abnormal return volatility. We extend their cross-sectional tests to examine whether there is any evidence of information content. Using a myriad of tests, we find that the number and types of RMM disclosures are not incrementally informative to investors even in poor information environments. Next, we consider three possible explanations for why investors do not find the RMM disclosures to be informative. We first investigate whether RMMs do contain valuable information but investors fail to immediately appreciate it. Our results using long-window buy-and-hold abnormal returns do not support this explanation. Second, we investigate whether the RMM disclosures are uninformative because they lack value relevance. Using value relevance tests, we find that the valuation coefficients on earnings and book value are lower as the number of disclosed RMMs increases. Moreover, companies with more RMMs exhibit significantly less persistence in their reported performance, which supports the view that such disclosures are relevant to valuation. Therefore, we reject the argument that RMM disclosures are uninformative because they are irrelevant to valuation. Finally, we examine whether RMMs are uninformative because investors already knew about the risks before auditors started disclosing them. We provide two pieces of evidence consistent with this story. First, when we estimate value relevance regressions for the year prior to RMM disclosure (year t-1), we find the valuation coefficients on earnings and book value are significantly 13 Why are expanded audit reports not informative to investors?… smaller among the companies that receive more RMMs in the following year (year t). This suggests that investors were already applying valuation discounts to the reported earnings and book values of companies that later received more RMMs. Second, we find that the vast majority of RMMs in years 1 and 2 had already been disclosed either by the company or by the auditor. Together, these two findings suggest that investors already knew about the vast majority of RMMs. Thus, standard-setters who are conducting post-implementation reviews on the consequences of expanded audit reports should not expect the change in the audit reporting standard to deliver new information to investors. Although expanded audit reports do not seem to provide investors with new information, we acknowledge that the new reporting requirements may have other benefits, such as increasing the external monitoring of management and auditors (Minutti-Meza 2020). For example, concurrent research suggests that managers are disclosing more information following the introduction of expanded audit reporting (Burke et al. 2020; Andreicovici et al. 2020). In addition, concurrent research indicates less earnings management when auditors are required to disclose RMMs (Klueber et al. 2018; Reid et al. 2019; Santos et al. 2020; Drake et al. 2020). Thus, although investors may not be directly informed by RMMs, investors may benefit indirectly through improved manager disclosures or improved financial reporting. Our study is subject to the caveat that the UK has important institutional characteristics that could limit the generalizability of our findings. The UK’s information environment is less transparent than that of the US due to the UK’s less stringent disclosure requirements. For example, US companies must file quarterly financial reports and are subject to Regulation FD, but the same requirements are not imposed on UK companies. In addition, many corporate governance practices required by law for US companies are implemented in the UK on only a “comply or explain” basis. Additionally, US companies and auditors report on the effectiveness of internal controls for accelerated filers, whereas the UK does not have this requirement. Moreover, the UK is a less litigious environment than the US, and the FRC has less enforcement power than the SEC and PCAOB. Therefore, UK auditors are less likely to be concerned about shareholder litigation and regulatory sanctions, which could affect their willingness to disclose informative RMMs. Finally, expanded audit reports were introduced for premium-listed companies in the UK, and such companies tend to be large and well known. This feature of the sample could limit our ability to identify an investor reaction to auditor risk disclosures. We encourage more research on expanded audit reporting in other jurisdictions whose institutional arrangements are different from those observed in the UK. 13 C. S. Lennox et al. Appendix A See Table 10. Table 10 Examples of auditors’ disclosures of the risks of material misstatement Extract from the audit report issued by Deloitte to Chemring Group Plc (five risks of material misstatement) 1. Revenue recognition on: • Significant long-term contracts, due to the financial effects of judgements, including future milestone success, associated with determining the percentage of contract completion at the balance sheet date and risks associated with completing the contract; and • Delivery of goods, due to the complex contractual terms with regards to the transfer of risk and reward and therefore the appropriate point at which revenue should be recognised. 2. Valuation of goodwill and intangible assets arising on historical acquisitions, due to management’s assertions regarding their recoverable amount. There are a number of key judgments in determining the recoverable amount, including growth rates in future cash flow forecasts and discount rates applied to these forecasts. 3. Taxation, specifically where provisions are made in respect of judgments taken in the various tax jurisdictions in which the Group operates. These provisions are judgmental as a result of their nature and technical complexity. 4. Appropriateness and completeness of judgmental provisions made by management in respect of obsolete inventory, product failures, and legal claims in respect of the outcome of these issues. 5. Appropriateness of the going concern principle. Extract from the audit report issued by Ernst & Young to Aer Lingus Group (four risks of material misstatement) 1. Pension arrangements We focused on this because, while the Group’s position is, supported by legal advice, that they have no legal or constructive obligation in respect of the deficit in either scheme, the Group has indicated that it is willing to assist in a process that will seek a solution that balances the interests of all parties, and such process may involve once off payments to a new scheme provided certain conditions are met. Industrial or other actions may arise. 2. Property, plant and equipment impairment assessment The directors performed an impairment assessment as they identified an impairment trigger indicated by IAS 36 in the carrying amount of the Group’s net assets as more than its market capitalization as at December 31, 2013. We focused on this area due to the identified impairment trigger, the size of this balance and because it involves complex and subjective judgments by the directors about the future results of the business, in particular revenue and costs, fleet composition and discount rate assumptions. 3. Fraud in revenue recognition We focused on the timing of the recognition of revenue and its presentation in the income statement as the timing of recognition is usually dependent on delivery of the service which, for the most part, occurs after payment has been received for the service. 4. Risk of management override of internal controls Extract from the audit report issued by PricewaterhouseCoopers to Pearson Plc (7 risks of material misstatement) 1. Risk of fraud in revenue recognition. Auditing standards require us to consider the risk of fraud in revenue recognition. We focused on material products and services where revenue recognition practices are particularly complex and subject to estimates, being: •Multiple element arrangements, such as the provision of supplementary (print or digital) materials or training with textbooks, where revenue is recognized for each element as if it were an individual contractual arrangement requiring the estimation of its fair value and; •Certain long term contracts in the Education segments, where revenue is recognized using percentage of completion based on costs. 2. Risk of management override of internal controls. Auditing standards require us to consider the risk of management override of internal controls. 3. Penguin Random House Transaction. On July 1, 2013, management announced the completion of the Penguin Random House combination which resulted in a number of complex accounting and business model changes as follows: •Disposal accounting, including the gain on the sale; •Valuation of the new business and intangible assets; •And associate accounting, including alignment of accounting policies and presentation of results in the consolidated financial statements. We focused on this area because it was a complex transaction which required the directors to exercise a significant level of judgement. 13 Why are expanded audit reports not informative to investors?… Table 10 (continued) 4. Provision for uncertain tax liabilities. The group is subject to several tax regimes due to the geographic diversity of its businesses. The directors are required to exercise significant judgment in determining the appropriate amount to provide in respect of potential tax exposures and uncertain tax provisions. The most significant of these relate to U.S. tax. We focused on this area because of the inherent judgments required in estimating the amount of any provision required. Changes in assumptions can materially impact the level of provisions recorded in the financial statements. 5. Returns provision. We focused on this area because there are material judgmental provisions for anticipated book returns within the Education segment particularly as the group transitions from print to digital. 6. Valuation of pre-publication assets and inventories. We focused on this area because there are material pre-publication assets and inventories within the Education segments. Judgment is required to evaluate the valuation of these assets which may be more complex during the transition from print to digital. 7. Goodwill impairment reviews. We focused on this area because the Group carries significant goodwill and acquired intangible asset balances. There is judgment in the identification and aggregation of cash generating units (CGUs) and in the assumptions used in the annual goodwill impairment review. Appendix B Variable definitions Dependent variables CAR​= 3-day cumulative abnormal return (− 1, 1) centered on company i’s annual report release date. |CAR|= 3-day unsigned cumulative abnormal return (− 1, 1) centered on company i’s annual report release date. VOLATILITY = abnormal 3-day stock return volatility (following Landsman et al. 2012). VOLUME = abnormal 3-day trading volume (following Landsman et al. 2012). Pit = company i’s stock price per share, 30 days after company i’s year t annual report release date. BHAR (1, 3, 6, 12 month) = buy and hold abnormal returns for company i calculated using the FTSEALL index over the window 1, 3, 6, or 12 months among observations with one full year of returns following the annual report release date. AUD_CHANGEt+1 = one if company i changes auditors between year t and year t + 1, 0 otherwise. ROAt+1 = return on assets for company i in year t + 1. CFOt+1 = cash flow from operations scaled by total assets for company i in year t + 1. Test variables RMM = the number of risks of material misstatement disclosed in company i’s audit report. RMM_ACCT​= the number of RMMs reported in company i’s expanded audit report that pertain to specific accounts in the financial statements. RMM_ENTITY = the number of RMMs reported in company i’s expanded audit report that pertain to the entity as a whole. 13 C. S. Lennox et al. RMM_COMPANY = the number of RMMs reported in company i’s audit report that appear in fewer than 50% of the audit reports in company i’s industry in year t. RMM_INDUSTRY​= the number of RMMs reported in company i’s audit report that also appear in more than 50% of the audit reports in company i’s industry in year t. RMM_PRED = the predicted number of RMMs for company i in year t from the model shown in Column 1 of Appendix C. RMM_UE = the residual from estimating the model shown in Column 1 of Appendix C that predicts the number of RMMs in company i’s audit report in year t. RMM_TONE = the number of positive words in the RMM section of company i’s audit report less the number of negative words in the RMM section of company i’s audit report, scaled by total words in company i’s RMM section. Positive and negative words follow the 2014 update to the Loughran and McDonald (2011) word lists. RMM_CHANGE = the number of RMMs reported in company i’s year t audit report minus the number of RMMs reported in company i’s year t-1 audit report. RMM_PREV = the number of RMMs reported in company i’s year t audit report that were previously reported by the auditor in year t-1. In year 1, RMM_PREV = 0 because year 1 is the first year of RMM disclosure. In year 2, RMM_PREV = RMM_ NEW_Y2 because we use the year 1 audit report to identify any new RMMs in the following year. RMM_NPREV = the number of RMMs reported in company i’s year t audit report that were not previously reported by the auditor in year t-1. In year 1, RMM_ NPREV = RMM because year 1 is the first year of RMM disclosure. In year 2, RMM_NPREV = RMM_AD_Y2 because we use the year 1 audit report to identify any new RMMs in the following year. RMM_NEW_Y1 = the number of RMMs reported in company i’s year 1 audit report where we are unable to find that the company previously disclosed the risk in the prior year. RMM_AD_Y1 = the number of RMMs reported in company i’s year 1 audit report where we find that the company previously disclosed the risk in the prior year. RMM_NEW_Y2 = the number of RMMs reported in company i’s year 2 audit report that were not disclosed by the auditor in year 1. RMM_AD_Y2 = the number of RMMs reported in company i’s year 2 audit report that were already disclosed by the auditor in year 1. RMM_NEW_Y1&Y2 = RMM_NEW_Y1 in year 1 or RMM_NEW_Y2 in year 2. RMM_AD_Y1&Y2 = RMM_AD_Y1 in year 1 or RMM_AD_Y2 in year 2. Control variables ANALYSTS = the number of analysts following company i in year t. ACQ = acquisitions amount divided by total assets for company i in year t. Missing values are set equal to zero. AC_SIZE = audit committee size for company i in the first year of adoption. BTM = the book to market ratio for company i at the end of year t. BUSY = one if company i has a December year-end and zero otherwise. 13 Why are expanded audit reports not informative to investors?… BV = net assets per share for company i at the end of year t. CATA​= current assets divided by total assets for company i in year t. DEF_TAX = deferred taxes scaled by total assets for company i in year t. Missing deferred tax accruals are set equal to zero. DISTRESS = one if company i reports a negative value for net income or net assets in year t and zero otherwise. E = earnings per share for company i in year t. EXTR_ITEMS = extraordinary items scaled by total assets for company i in year t. Missing values are set equal to 0. FIXED ASSETS = net fixed assets scaled by total assets for company i in year t. GC = one if company i’s audit report includes an RMM or report modification indicating substantial doubt about the entity’s ability to continue as a going concern and zero otherwise. GOODWILL = goodwill scaled by total assets for company i in year t. INVENTORY = inventory scaled by total assets for company i in year t. LAG_ACQ = acquisitions amount for company i in the prior year scaled by total assets in the prior year. SIZE = the natural log of the market value of equity for company i at the end of year t. LN_SUBS = the natural log of (one plus) the total number of subsidiaries for company i in year t. LOSS = one if company i reported a loss in year t and zero otherwise. PROBLEM = one if company i had an accounting problem during the two years prior to year t’s audit report and zero otherwise. We identify a company as having had an accounting problem if it announced a restatement to correct a previous error or irregularity or if the company was named by the Financial Reporting Council as having had an accounting problem. RECEIVABLES = accounts receivable scaled by total assets for company i in year t. SALESGROWTH = percentage change in revenue for company i from year t-1 to year t. SEC_REG = one if company i is registered with the U.S. Securities and Exchange Commission and zero otherwise. TENURE = the natural log of audit firm tenure for company i in year t. UNCERTAINTY = the number of uncertainty words divided by total words in the risk of material misstatement section of company i’s audit report in year t. Uncertainty words are available at https://​www3.​nd.​edu/​~mcdon​ald/​Word_​Lists.​html. Notes: The RMM test variables—PROBLEM, SEC_REG, AC_SIZE, AUD_ CHANGE, and AUDITOR_TENURE—are hand collected from companies’ annual reports and other sources. Market variables are constructed from Compustat Global. Other variables are sourced from FAME and Compustat Global, supplemented by hand collection as needed to avoid sample loss. 13 C. S. Lennox et al. Appendix C See Table 11. Table 11 RMM prediction model SIZE BTM ANALYSTS SEC_REG PROBLEM DISTRESS LN_SUBS GC INVENTORY RECEIVABLES GOODWILL FIXED ASSETS ACQ LAG_ACQ EXTR_ITEMS SALESGROWTH DEF_TAX Poisson Regression OLS Regression RMM RMM 0.041*** 0.155*** (3.131) (3.079) 0.032** 0.123* (2.023) (1.928) 0.003 0.011 (1.045) (1.136) 0.087 0.516* (1.566) (1.909) 0.195** 0.894** (2.509) (2.386) 0.124*** 0.520*** (3.708) (3.765) 0.032*** 0.128*** (2.801) (2.904) 0.097** 0.381** (2.554) (2.492) − 0.119 − 0.440 (− 0.825) (− 0.860) 0.107 0.373 (0.761) (0.704) 0.138 0.506 (1.477) (1.394) 0.152*** 0.614*** (4.203) (4.186) 1.390*** 5.286*** (3.486) (3.204) − 0.490 − 1.960 (− 0.968) (− 1.031) − 2.368 − 3.375 (− 0.231) (− 0.147) − 0.073* − 0.202* (− 1.800) (-1.695) − 0.262 − 0.921 (− 0.574) (− 0.498) 0.535*** 0.861 (2.893) (1.291) Observations 932 932 Pseudo R-squared/R-squared 0.047 0.323 Constant Year, auditor, and industry are included but omitted for brevity ***, **, and * denote statistical significance at the 1%, 5%, and 10% levels, respectively (two-tailed). T-statistics are reported in parentheses below each coefficient. Variables are defined in Appendix B 13 Why are expanded audit reports not informative to investors?… Appendix D Examples of previously disclosed risks of material misstatement Example 1: Extract from the audit report issued by PricewaterhouseCoopers to ICAP plc in 2014 “Area of Focus. Goodwill impairment assessment. We focused on this area due to the size of the goodwill balance and because the directors’ assessment of the carrying value of the Group’s cash generating units (CGUs) involves judgements about the future results of the business and the discount rate applied to future cash flow forecasts.” (p. 91). Extract from the intangible assets footnote in the 2013 annual report of ICAP plc “This process requires the exercise of significant judgement by management; if the estimates made prove to be incorrect or performance does not meet expectations which affect the amount and timing of future cash flows, goodwill and intangible assets may become impaired in future periods.” (p. 98). Example 2: Extract from the audit report issued by KPMG to Rathbone Brother plc on April 15, 2014 “The risk: Note 32 refers to two related legal claims that are ongoing. The directors have determined that no provision should be raised in respect of these claims as at 31 December 2013 as they believe that it is more likely than not that any final judgment in relation to these claims will not result in a liability against the group and, on this basis, have disclosed them as a contingent liability. Due to the complexity of the two cases and the risks concerning the sufficiency of the insurance cover, the assessment of whether a liability is probable, possible or remote is considered to be inherently subjective and the amounts involved are potentially material.” (p. 73). Extract from the Rathbone Brothers plc earnings announcement issued on February 20, 2014 “Legal proceedings: As reported in the 2012 report and accounts, a claim relating to the management of a Jersey trust has been filed against a former employee (and director) of a former subsidiary and others (and that former subsidiary has recently been joined in as a defendant). In addition, the company issued proceedings against certain of its civil liability (professional indemnity) insurers in respect of the former employee’s potential liabilities arising out of the Jersey claim. In November 2013 the company announced that judgment had been handed down following the trial in the Commercial Court in London in respect of the insurance case. In December, the company and the former employee in question decided to appeal subrogation aspects of the 13 C. S. Lennox et al. judgment and our insurers also decided to appeal coverage aspects of the judgment. The hearing of those appeals before the Court of Appeal is expected to take place in the second half of 2014. The underlying Jersey claim is now expected to come to trial towards the end of 2015. Further detail on these matters is set out in note 8.” Acknowledgements We thank Mark DeFond, Jere Francis, Chris Hogan, Bill Kinney, Jeff Pittman, Joe Schroeder (AAA discussant), Theodore Sougiannis, Mike Wilkins, and the workshop participants at Baylor University, the University of California at Riverside, the University of Illinois Urbana-Champaign, the 2016 AAA Auditing Midyear Conference, and the 2016 International Symposium on Audit Research for their helpful comments and suggestions. We are grateful for research funding from the McCombs Research Excellence Grant Program and the McCombs Undergraduate Research Assistant Program. We thank Emily Baker, Sid Chandrashekar, Diana Choi, Jessie Hu, Minjae Kim, John Menefee, Catherine Quintana, Stephen Tran, Jinghua Xing, Tingya Hu, Julia Rossdeutscher, Ting-Ting Wang, Samantha Wendt, and Qiang Wei for their research assistance. References Andreicovici, I., A. Jeny, and D. Lui. (2020). Do firms respond to auditors’ red flags? 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