Is there volatility convergence in Asia-Pacific securitized real estate markets? Kim Hiang LIOW and Wei CHEN Kim Hiang LIOW* Department of Real Estate National University of Singapore 4 Architecture Drive Singapore 117566 Tel: (65)65163420 Fax: (65)67748684 Email : rstlkh@nus.edu.sg and Wei CHEN July 25, 2011 1 Is there volatility convergence in Asia-Pacific securitized real estate markets? Abstract This study considers whether a group of eight Asia-Pacific securitized real estate markets display similar volatility trend over the past 15 years, 1995-2009, using an econometric model that incorporates common volatility effects across the sample markets. The empirical results indicate the presence of at least one common variance component, and thus partial volatility convergence, among the sample Asia real estate securities markets. During the global financial crisis period, some real estate securities markets are co-integrated in both their first and second moments and demonstrate partial return and volatility convergence. Our analysis that focuses in capturing the common roots in the second moment whilst accounting for time-varying variance has important implications for international real estate portfolio investment. Keywords Asian real estate securities markets; common volatility; volatility convergence; GARCH co-integration; portfolio diversification; global financial crisis Background, Objective and Contribution of Research Prior literature has considered various aspects of international stock market integration from short run and long-term perspectives. While the short-run investigation focuses on returns and volatility spillovers, as well as time-varying correlations across different national stock markets (e.g. Hamos et al. 1990; Yang, 2005), another strand of the literature considers long-run relationships and common stochastic trends among various stock markets over time. In this regard, co-integration methodology has been frequently applied to different international stock market datasets to detect the existence and dynamics of long-run relationships and strength of the relationships among the stock markets (e.g. Chan et al 1992). Moreover, Kasa (1992) and Manning (2002) investigate the presence of common forces driving the long-run return movement of the stock market indexes. This latter approach is superior because a combination of common trends analysis and co-integration analysis provides investors with a more complete picture regarding the degree of portfolio diversification benefits across the markets concerned over time. In seeking to contribute to international real estate volatility literature, our paper extends this “common trend” interest to investigate whether a group of Asia-Pacific securitized real estate markets has displayed a similar common time-varying volatility (i.e. volatility convergence) over the period 1995-2009. Our motivation is derived from the Engle and Susmel (1993)’s work that has examined explicitly whether there is a common component driving the volatility among international stock markets using the bivariate common feature test of Engle and Kozicki (1993). By the same token, it is 2 possible that a group of securitized real estate markets investigated shares a common volatility component; and accordingly there is volatility convergence in these markets if this commonality exists. Due to the strong growth and remarkable risk-adjusted performance of securitized real estate over the last two decades, international investors have become increasingly interested in increasing real estate allocations in their portfolios (Dhar and Goetzmann, 2006). Importantly, the level of securitized property in Asia is about 12% of global property capitalization, which is significantly above that of the mature markets (US: 6 percent; UK: 5 percent; France: 6 percent) and the global average of six percent (EPRA, 2008). With Asian stock markets accounting for 28% of global stock market capitalization (WFE, 2009) and Asian securitized real estate markets accounting for 48% of global property securities (Macquarie Securities, 2009), the significance and performance of the Asian securitized real estate sector deserve global investors’ attention. However, in comparison to the considerable amount of literature that has examined stock market and bond market integration, far less is understood about the presence of volatility convergence and its implication for integration among the Asian real estate securities markets despite the significant interest in volatility convergence in securitized property diversification in Asia. This is where our study intends to contribute. This study, which is about Asia-Pacific securitized real estate markets, includes four focused areas. With a sample covering eight Asia-Pacific real estate securities markets that include Australia, Japan, Hong Kong, Singapore, China, Taiwan, Malaysia and the Philippines over a period of 15 years beginning January 1995 and ending December 2009, first we search for a long-term equilibrium relationship among the real estate securities indices. Second, we test whether these real estate securities markets exhibit time-varying volatility characteristics. Third, we address the issue of common timevarying volatility across the sample real estate securities indexes using the modified multivariate cointegration test with generalized autoregressive conditional heteroskedascity (GARCH) effects (henceforth termed as “GARCH-cointegration”) developed by Gannon (1996). With the investigation conducted on both multivariate and bivariate basis, we hope to detect the presence of a common timevarying volatility factor among the real estate securities markets under examination. Evidence of this nature is consistent with the notion that real estate securities markets are linked in their second moments, as well as indicate that a global common time-varying volatility specification is adequate in modeling real estate securities prices. Specifically, co-integration analysis evaluates only whether the real estate securities market prices are integrated in the long run, while GARCH co-integration hopes to 3 detect whether the markets are linked together through a common variance factor. Thus the two tests complement each other. Finally, we repeat the volatility convergence analysis for the last five years from January 2005 to Dec 2009. 1 It should be noted that the emphasis on the 2005-2009 period is very specific. Not only did volatility in the capital markets generally rise considerably in this period but this was particularly seen in some securitized real estate markets. In addition, the role of real estate in the financial crisis was initially confined to the case of the subprime market but then extended to the collapse in many residential and commercial markets, making this a very eventful period. In line with the literature, if real estate securities markets have become more closely related in their second moments during this “crisis” period, then it is possible that this period may be associated with more common volatility components or a stronger common volatility factor compared with the full-period model. The analysis in this article has important implications for intra-regional volatility dynamics. Specifically, if the group of Asia-Pacific securitized real estate markets is found to have volatility convergence, this implies the existence of some common factors governing cross-market volatility generating process, and has significance pricing implications in the spirit of Capital Asset Pricing Model (CAPM) and Arbitrage Pricing Theory (APT). Specifically, even though the sample real estate securities market prices might not be integrated through the first moments (see for example, Liow, 2008), it is still possible that the markets are linked together in the long run through their second moment (i.e. volatility). Moreover, if the markets are converging towards few common stochastic volatility components over time, it would imply that the benefits arising from investing in international real estate securities portfolio could be (significantly) reduced due to the presence of one or more common volatility factor(s) in the cross-market relationships. This knowledge is likely to benefit portfolio managers who should be more cautious in understanding the cross-market return and volatility linkages (and thus convergence) in the short-run as well as in the long term. For policy makers, this additional knowledge on volatility convergence will be useful in their policy formulation on cross-border real estate investment especially in periods of market turmoil such as the recent 2007 global financial crisis. 1 For the purpose of investigating volatility convergence during the global financial crisis period, we divide the 15-year full study period from January 1995-December 2009 into three shorter sample periods; (a) Jan95-Dec99, (b) Jan00-Dec04, and (c) Jan05-Dec09, which includes the crisis period. We focus on (c). 4 It is noted even though the GARCH co-integration test methodology, an extension of the bivariate Engle and Kozicki (1993)’s “common-feature” methodology, has been employed in some stock, bond and foreign exchange markets’ studies (e.g. Gannon, 1996; Alexakis and Apergis, 1996; Pan et al. 1999; Fan, 2003; Thuraisamy and Gannon, 2008) to our knowledge, this is probably the first study in securitized real estate arena that utilizes this multivariate “common feature” methodology to study volatility convergence across the Asia-Pacific real estate securities markets. With the growing economic importance of the Asian region, particularly the Greater China area (which includes Mainland China) in recent years, we would expect this volatility convergence issue in Asia to become increasingly significantly enough in affecting the level of real estate market informational efficiency, due to the influence of globalization and real estate asset securitization in Asia. The outline of the paper is as follows. The next two sections review the existing literature and describe the real estate securities market sample and data characteristics used in the analysis. The following section explains the “common features” and “GARCH co-integration” methodologies, as well as outlines the empirical procedures. Thereafter, we present the empirical results and discuss research implications. The last section presents some concluding remarks. Related Literature This study is related to the growing literature on stock markets’ and securitized real estate markets’ integration. As in the stock market literature, short-term studies on international real estate securities market linkages focus on return correlations and volatility spillovers. Cotter and Stevenson (2006) use a multivariate GARCH model to examine tine-varying conditional volatilities and correlations in the daily USA REIT and equity prices. Michayluk et al (2006) investigate daily volatility spillover effects and time-varying correlation dynamics between the USA and UK securitized real estate markets. Liow et al (2009) examine the time-varying correlations and volatility links of several national /regional securitized real estate and stock markets. They find that real estate securities markets’ conditional volatilities and stock markets’ volatilities are synchronous over time. Moreover, the international correlation structure of real estate securities and the broader stock market are linked to each either. In another study, Liow et al (2011) investigate the dynamics and transmission of conditional return volatilities with multiple structural breaks using a multivariate regime-dependent asymmetric dynamic covariance model. However, none of the above studies has examined the issue of volatility convergence in the securitized real estate markets. 5 Another group of real estate researchers use multivariate co-integration technique to investigate the nature and extent of long-term price equilibrium relationships among international real estate securities markets (e.g. Wilson and Okunev, 1996; Eichholtz et al, 1998; Garvey et al. 2001; Kleiman et al. 2002; Liow et al. 2005; Yang et al. 2005; Yunus and Swanson, 2007 and Yunus, 2009). For example, Yunus and Swanson (2007) examine long-run price relationships and short-run causal return linkages among the real estate securities markets of Australia, Hong Kong, Japan and Singapore. The find that US investors can derive diversification benefits from investing in these markets both in the long run and in the short run. In so far as this study is related, we gather four real estate studies that bear similar “commonfeature” theme to our work. Bond and Hwang (2003) identify the common (or permanent) component of volatility shared by both the UK securitized and direct commercial property markets. Liow and Webb (2009) examine the existence of common return factors in the securitized real estate markets of Hong Kong, Singapore, the UK and the US over 1993-2003. Using factor analysis and canonical correlation technique on monthly data, they detect a common return risk factor which is moderately correlated with the global real estate market. Yunus (2009) investigates the dynamic interdependence among the securitized real estate markets of Australia, France, Hong Kong, Japan, Netherlands, the UK and US for the period 1990-2007. Using co-integration tests and common trends analysis, she finds that international securitized real estate markets are becoming increasing converged over time. In addition, the US and Japanese markets are the sources of the common stochastic trends that drive the cointegrated markets toward the long-run equilibrium relationships. Finally, covering 12 real estate securities markets over 1994-2009, Liow and Ibrahim (2010) in their recent study examine the correlation structure of “permanent” and “transitory” volatility series of the sample markets. In particular, the summary of the “permanent” volatility dynamics using factor analysis indicates whether the correlation in volatilities is caused by at least a “common factor “that spans across all real estate “permanent” volatility series. They find that even though with the same numbers of “common factor” derived from the “permanent” and “transitory” volatility series, their loadings are not similar and consequently the long-run and short-term volatility linkages for some real estate securities markets are different. Sample and data characteristics 6 Our sample consists of daily closing securitized property market indexes for Australia, Japan, Hong Kong, Singapore, China, Taiwan, Malaysia and Philippines. It is noted that each of the eight real estate securities markets is in different stages of development and has different market capitalizations, institutional and regulatory frameworks, as well as market transparencies, trading systems and transaction costs. The sample data, which come from Standard and Poor (S&P) Global Property database, 2 consist of 3907 total return indexes covering the period from 6 January 1995 to 26 December 2009, the longest data period for which all eight real estate indices are available in an international study. 3 Daily stock returns are computed as natural logarithmic of the total return indexes relative, I t in successive days; i.e. Ln( I t I t −1 ) . Moreover, as one data frequency might not necessarily be more appropriate than another, this study also uses weekly data for comparison. One shortcoming is the use of weekly data also leads to a relatively small sample (782 points), particularly with respect to the sub-periods. Some summary statistics for the eight real estate securities market index return series are given in Table 1. Over the full study period, the best daily return performer is China (0.033%), and is followed by Hong Kong (0.017%). In contrast, Malaysia real estate securities market has the worse average daily return performance (-0.025%). Except for Malaysia, the other three Asia-developing markets 4 are the most volatile with China tops the list (daily standard deviation is 2.594%). Finally, the results indicate that the distribution of return for all eight real estate stock indexes is non-normal, characterized by higher peakedness and fat tails relative to a normal distribution, whereas this evidence for non-normality is weaker for weekly returns. Figure 1 plots the index movements of these eight Asia-Pacific securitized real estate markets over the full study period. (Table 1 and Figure 1 here) Table 2 provides the Pearson correlation results for the squared return (volatility) series for the full period – Panel A (upper triangle: weekly; lower triangle: daily), as well as for the last five years 2 This S&P global property database, the latest international public real estate database in the market, is designed to reflect components of the broad universe of investable international real estate stocks reflecting their risk and return characteristics. In total, the database has indices (both capitalization weighted and float adjusted) comprised of over 500 companies from more than 35 developed and emerging markets with a minimum market value of $100 million (Serrano and Hoesli, 2009). 3 Thailand and Indonesia were excluded from the study due to large number of missing time series data. 4 We follow S&P Property classification - Asia-Pacific developed (Australia, Japan, Hong Kong and Singapore) and Asia-Pacific developing (China, Taiwan, Malaysia and the Philippines). 7 (Jan05-Dec09) that includes the global financial crisis – Panel B (upper triangle: weekly; lower triangle: daily). Most of the volatility correlations are low. For the full period estimates using daily data, only one correlation figure is higher than 0.5 (Singapore/Hong Kong: 0.704) and none of the correlation coefficients are higher than 0.3. During the global financial period (Jan05-Dec09), correlations are higher for all 28 pairs. Moreover, 13 pairs of the correlation coefficients are higher than 0.3. The correlation results obtained from using weekly data are mostly consistent to those estimated from daily data. In addition, the correlations for weekly (long horizon) volatility appear to become larger in all cases, except that Australia’s volatility correlation with Malaysia has decreased from 0.016 for daily data to -0.0027 for weekly data The volatility correlation results are in general agreement with what appears in the literature. In contrast to international stock markets, international securitized real estate markets exhibit smaller return correlations (Liow et al, 2009); however, some markets are interdependent through their second moments (i.e. volatility). Moreover, it appears that there is a pattern of (much) higher volatility correlation among the markets in “crisis” period, which is again in broad agreement with what is reported in the stock market literature (Longin and Solnik, 1995). However, correlation analysis is not suitable for analyzing long-term relationships because it utilizes return (or squared return) information and neglects information contained in the level data. (Table 2 here) Methodology Empirical framework for common time-varying volatility This section presents the empirical framework designed to address the volatility convergence issue in the Asia-Pacific real estate securities markets. Since the presence of GARCH effects (i.e. fat tailed and possible time-varying volatility – Table 1) could affect the standard co-integration tests due to the presence of time-varying volatility (Pan et al 1999), we first consider the “common ARCHfeature” testing procedure of Engle and Kozicki (1993) to document a common time-varying variance present in the real estate securities markets. Specifically, there is a common ARCH feature if a linear combination of two or more series does not display ARCH effects even though ARCH is present in each of the individual series. Moreover, if two series share a common volatility process, it is also an indicator of volatility convergence between the two markets which are responding to similar factors that cause volatility in their respective real estate securities markets. However, as the Engle and 8 Kozicki (1993) common ARCH-feature procedure is only applicable to a bivariate market-pair and is therefore inappropriate for our sample of eight markets, we appeal to a multivariate testing methodology; GARCH co-integration test developed by Gannon (1996), to examine whether our eight Asia-Pacific securitized real estate data series share at least a common time-varying volatility. A review of stock market literature reveals only Pan et al. (1999) and Fan (2003) have utilized this methodology in their studies on Asia-Pacific stock markets. In addition to the multivariate version, we also conduct bivariate common volatility investigation for all 28 market-pairs in order to unravel any significant bivariate linkages that have contributed to the multivariate cross-market volatility relationships under examination. The GARCH co-integration methodology is briefly explained below in three steps: (a) As in Gannon (1996), our test for common time-varying volatility is built upon the popular Johansen (1988)’s likelihood ratio test in multivariate co-integration. As documented in the literature, the concept of co-integration is developed from the belief that certain economic variables such as stock market price series should not diverge from each other without bound. These variables may drift apart in the short-run but economic forces will bring them together if they continue to be far apart in the long-run (granger 1986). Further, if the markets are cointegrated, it implies that diversification opportunities between the markets are reduced in comparison to markets that are segmented. To incorporate the time-varying volatility effect present in return series, the standard Johansen co-integration test has to be modified. We first test the order of integration of the eight series in the system using the standard co-integration test. Then, a vector of residuals R0 (from the vector of differences of the series- 1a) and R1 (from the vector of lagged level of the series – 1b) is generated, i.e. (b) (1a)………… ∆Yt = ∑ j =1 a 0 j ∆Yt − j + R0t (1b)………… Yt − k = ∑ j =1 a1 j ∆Yt − j + R1t k −1 k −1 Estimate the canonical (multivariate) correlations from 1(a) and 1(b) and derive the canonical weights g1 j to g pj and h1 j to h pj . Then, generate two new canonical variates, named U and V as follows: (2a)……. U j = g1 j R0 jt + + ........ + g pj R0 pt 9 (2b)…………. By construction, the variates V j = h1 j R1 jt + ...... + h pj R1 pt U j and V j are created as linear combinations of original error terms and hence have zero mean (c): Estimate GARCH (1, 1) models for U and V for those significant canonical pairs from (b): (3a)……………………… (3b) ………… h jt U jt = ψV jt + ς t = ω j + α j ς t2−1 + β j ht −1 In the above, equation (3a) is equivalent to the standard ADF test for testing a unit root in residuals from the co-integrating equation, with GARCH (1, 1) effects accounted for in calculating U j. We then compare the t-value for the ψ coefficient in equation (3a) with the critical values derived from McKinnon (1991). If the computed t-statistic is less than the relevant critical values at the conventional probability levels (1%, 5% and 10%), then the null hypothesis of no common volatility component in securitized real estate markets cannot be rejected. Empirical implementation We first test whether all individual series is stationary or not. The augmented Dickey-Fuller (ADF) and Kwiatkowski-Philips-Schmidt-Shin (KPSS) tests will be utilized. Second we test for univariate ARCH effects in each market’s return. Using squared returns as a proxy for realized volatility, we perform Engle’s (1982)’s Lagrange Multiplier (LM) test by regressing each squared return on a constant and four lags of its own squared return, as well as on a constant and eight lags of its squared returns. These are the univariate ARCH (4) and ARCH (8) tests. In addition, the ARCH test is conducted with multivariate information set that includes, respectively, one lagged (MARCH (1)), four lagged (MARCH (4)) and eight lagged (MARCH (8)) squared returns of other markets. The null hypothesis to be tested is that the series exhibits no ARCH effects. The test statistic, which has a chisquared distribution, is obtained by multiplying the regression R2 times the sample size (Engle, 1982). Third, we conduct the GARCH co-integration test for three multivariate models (Model A: All AsiaPacific; Model B: Asia-Pacific developed; Model C: Asia-Pacific developing) as well for all 28 bivariate pairs. This will allow us examine closely which markets contribute to the co-integration space in the context of common volatility. 10 Results The results of the unit root tests are presented in Table 3. Based on the ADF and KPSS tests, and with one minor exception, the reported results indicate the rejection of non-stationarity in first (natural logarithmic) differences. Therefore, all eight real estate securities series are integrated once - I (1) . Because all the real estate indices are found to be non-stationary, subsequent co-integration tests are appropriate. (Table 3 here) Johansen multivariate co-integration test results on long-run price equilibrium We first conduct Johansen’s multivariate likelihood ratio co-integration analysis to examine whether there are any common forces driving the long-term movements of the eight real estate stock index series. Table 4 presents the Johansen’s trace and maximum eigen values, together with the 5% critical values. As the numbers indicate, for both daily and weekly data, all test statistics are below the 5% critical values for a given hypothesis. Therefore, it appears that the eight sample real estate securities index series are not co-integrated; implying these there is absence of long-term price comovement of the real estate securities markets under examination. The absence of co-integration also implies price divergence among the sample markets in the long-run. Accordingly, there exists potential long-run gain in risk reduction from diversifying in any of these Asia-Pacific markets, which is broadly consistent with the finding reported in Garvey et al (2001) and Liow (2008). (Table 4 here) Time-varying volatility Table 5 presents the ARCH test results for time-varying volatility: univariate [ARCH (4) and ARCH (8)], as well as multivariate [MARCH (1), MARCH (4) and MARCH (8)] information set. The null hypothesis tested is that the real estate securities series display no ARCH effects. For daily data, all the markets except Taiwan (ARCH-8) and The Philippines (ARCH-8) indicate evidence of ARCH effects. Moreover the MARCH tests provide consistent evidence of time-varying volatility in all of the real estate securities markets under examination. The results from weekly data are slightly different from those of daily data. While all univariate ARCH test results are highly significant, there is insignificant MARCH effect in Taiwan. (Table 5 here) Common time-varying volatility trends 11 Based on the three-step GARCH co-integration methodology outlined above, Table 6 contains the full period results. Of key interest is the estimation of theψ coefficient (Equation (3a)) which is based on a GARCH (1, 1) conditional variance equation. The row of r =1 corresponds with the test results estimated from the maximum canonical correlation variates; whereas r =2 provides the test results estimated from the second highest canonical correlation variates. For daily data with all markets (Model A), there is evidence of two common co-integrating volatility vectors from the GARCH (1, 1) adjusted variates significant at the one-percent level. Furthermore, the estimated results indicate when the GARCH co-integration is applied to the four developed (Model B) and four developing (Model C) markets respectively, we are able to detect a common time-varying volatility among the two groups of four daily indices because the respective tstatistics are statistically significant at the one-percent level. Thus it appears that the eight Asian real estate securities markets are linked together in the long-run through some similar volatility processes, or partial volatility convergence. The results from weekly data are somewhat different from those of daily data. Because the Taiwan real estate securities market does not exhibit a MARCH effect (Table 5), the test is also conducted on both the cases of with and without Taiwan. Whilst there is evidence of two significant butt weaker common co-integrating volatility vectors when all eight markets are included in the test (Model A), there is no evidence of a second co-integrating vector when Taiwan (without an MGARCH effect) is excluded from the test (Model A1). In addition, the empirical results show that the two models for the developing market group (with Taiwan – Model C; without Taiwan – Model C1) do not have a common time-varying volatility since the respective t-statistics are not significant at any conventional level. (Table 6 here) Finally, Table 7 contains the bivariate GARCH co-integration results for all 28 real estate securities market pairs. The empirical results indicate six pairs of real estate securities markets have a common time-varying volatility each. They are: Philippines / Singapore, Japan /Singapore, Philippines / Japan, Philippines / Malaysia, Hong Kong / Singapore, as well as China / Hong Kong. However, the two Asia-Pacific groups’ index series do not have the same volatility process. The weekly results are similar and yet weaker, with evidence of one significant common co-integrating vector in only three market-pairs: Philippines / Singapore, Hong Kong / Singapore, as well as China / Hong Kong 12 (Table 7 here) Overall, this part of the modified co-integration analyses finds that the eight Asia-Pacific real estate securities markets do share some common time-varying volatility. In addition, Singapore, Hong Kong, China, and Philippines appear to be part of the common volatility relationships. Accordingly, there is at least partial volatility convergence among the sample Asia-Pacific securitized real estate markets. Finally, the real estate securities markets of Australia, Taiwan, and to lesser degree, Japan and Malaysia can possibly be excluded from the volatility co-integration space. The implication is that diversification benefits are still available within these excludable real estate securities markets in the long run. Common volatility during the global financial crisis period (Jan05 to Dec09) In contrast to the full period co-integration results reported above, the standard Johansen cointegration test indicates that there is one co-integrating relationship significant at the 5% level during the global financial crisis period (results not reported in order to conserve space) , implying these indexes exhibit some tendencies to move together in the long run. This result is in broad agreement with the findings reported in Liow (2008) that real estate securities markets have become more interdependent following some turbulence (such as Asian financial crisis) in the markets because of the contagion effect. To understand the impact of the global financial crisis on the dynamics of volatility convergence, we repeat the GARCH co-integration tests on the same dataset covering the period from Jan05 to Dec09. Table 8 provides the multivariate results. Both the daily and weekly results are similar. In addition, two major differences are observed: (a) there appears to be one significant statistical link in volatility among the eight Asia-Pacific daily (and weekly) real estate stock market indexes; and (b) No evidence of volatility convergence for both the developed group and the developing group is detected, i.e. the respective t-statistics are not significant at any conventional levels. (Table 8 here) Finally, the bivariate results contained in Table 9 indicate that there are two significant volatility links (China / Hong Kong and Hong Kong /Taiwan) when daily data are used. An additional significant volatility link is detected between Philippines and Singapore when weekly data are used. It 13 thus appear that volatility convergence during this crisis period is mainly caused by inter-group (i.e. developed and developing) dynamics and is consistent with the multivariate results. (Table 9 here) Summarizing, this last five-year period that includes the global financial crisis period is associated with co-integration in the first moment among the eight Asia-Pacific real estate securities markets. In addition, a common time-varying volatility is detected among the eight real estate securities markets. Hence some real estate securities markets during this “crisis” period are co-integrated in both their first and second moments with other markets and thereby demonstrate partial return and volatility convergence. Accordingly, international portfolio diversification benefits are further reduced compared to the full period where no long-term price co-movement could be detected. An in-depth analysis of the long-run price and volatility convergence of larger samples of securitized real estate markets and their short-term temporal adjustment, as well as their potential changes triggered by a major crisis is important to validate the Asia-Pacific results, as well as for international portfolio management and risk diversification in real estate investing. Conclusion In the simple set up of this paper, we investigate whether there are long-run equilibrium relationships among the eight Asia-Pacific securitized real estate market indices, including Australia, Japan, Hong Kong, Singapore, China, Taiwan, Malaysia and the Philippines over the past 15 years spanning from January 1995 to December 2009, in the context of “price convergence” and “volatility convergence”. In contrast to the previous studies that evaluated only long-run price interdependence or volatility spillover, we focus on whether the sample Asia-Pacific real estate securities markets have long-term, common time-varying volatility. To our knowledge, this is probably the first “common volatility” real estate study and supplements prior securitized real estate literature on return and volatility spillover. In addition, we examine the impact of the global financial crisis on the dynamics of price and volatility convergences among the real estate securities markets under examination. Our empirical findings indicate the presence of ARCH effects in almost all real estate securities index series, indicating that their time-varying volatilities need to be incorporated in searching for volatility convergence. Although the sample Asia-Pacific real estate securities market indexes are not co-integrated in the long run, we find these markets share long-term, common time- 14 varying volatility. Specifically, our GARCH co-integration tests reveal that the sample markets are linked with at least one common time-varying variance factor. During the global financial crisis period (January 2005-December2009), we find that not only these real estate securities markets display some tendencies to co-move in the long run (i.e. price convergence), they are also linked through partial volatility convergence. To conclude, our study indicates the presence of at least one common time-varying variance component, and thus partial volatility convergence among the eight Asia-Pacific real estate securities markets that. One important lesson to learn from this study is that any effort to unravel the crossmarket dynamics and extent of integration among international real estate securities markets should consider both price and volatility convergence; as well as from the short term perspective should consider dynamic return correlation and volatility spillovers. 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(2009), “Increasing convergence between US and international securitized property markets: evidence based on cointegration tests” Real Estate Economics 37(3), 383-411 World Federation of Exchanges .2009 Annual report 2008, WFE 17 Table 1 Summary statistics on real estate securities returns: Jan95-Dec09 Market Mean (% ) Australia Japan Hong Kong Singapore China Malaysia Philippines Taiwan 0.001 -0.001 0.017 0.002 0.033 -0.025 -0.003 -0.023 Australia Japan Hong Kong Singapore China Malaysia Philippines Taiwan 0.121 0.020 0.151 0.066 0.202 -0.060 0.018 -0.072 Std dev(% ) Skewness Panel A: Daily data 1.174 -0.968 2.063 0.244 1.955 0.334 2.037 0.941 2.594 -0.006 1.893 0.902 2.196 0.854 2.227 -0.220 Panel B: Weekly data 2.672 -2.093 4.567 -0.098 4.561 -0.396 4.961 -0.350 5.843 0.033 4.494 0.801 5.140 -0.012 5.007 -0.154 Kurtosis Jarque-Bara 15.839 6.644 12.260 15.558 6.184 24.909 14.857 8.370 27436.3 2199.3 14026.9 26241.5 1650.2 78652.2 23354.1 4725.0 20.641 4.279 7.347 12.747 5.041 11.347 5.498 5.135 10697.5 54.5 635.4 3107.9 135.7 2350.9 203.1 151.4 Source: derived from S&P global property database 18 Table 2 Correlation results for squared returns (volatilities) Panel A: Full period (January 1995 - December 2009; upper traingle (weekly data); lower triangle:(daily data)) Australia Japan Hong Kong Singapoere China Malaysia Philipinnes Taiwan Australia 1 0.251 0.221 0.111 0.185 0.016 0.069 0.047 Japan 0.391 1 0.201 0.162 0.132 0.079 0.085 0.042 Hong Kong 0.268 0.330 1 0.704 0.223 0.171 0.188 0.061 Singapore 0.169 0.204 0.771 1 0.129 0.186 0.184 0.038 China 0.247 0.256 0.311 0.293 1 0.049 0.070 0.040 Malaysia -0.0027 0.113 0.286 0.444 0.154 1 0.054 0.027 Philipinnes 0.259 0.264 0.379 0.395 0.238 0.137 1 0.005 Taiwan 0.091 0.141 0.107 0.092 0.112 0.043 0.081 1 Panel B: Subperiod (January 2005 - December 2009; upper traingle (weekly data); lower triangle: (daily data)) Australia Japan Hong Kong Singapoere China Malaysia Philipinnes Taiwan Australia 1 0.383 0.403 0.383 0.323 0.084 0.231 0.201 Japan 0.493 1 0.471 0.409 0.367 0.169 0.309 0.198 Hong Kong 0.595 0.727 1 0.558 0.629 0.166 0.348 0.261 Singapore 0.525 0.542 0.669 1 0.461 0.214 0.286 0.272 China 0.372 0.565 0.615 0.491 1 0.172 0.281 0.318 Malaysia 0.05 0.152 0.131 0.146 0.299 1 0.229 0.141 Philipinnes 0.546 0.604 0.611 0.547 0.525 0.203 1 0.206 Taiwan 0.205 0.305 0.344 0.475 0.349 0.062 0.424 1 Notes: Each correlation panel contains two reporting frequencies: Figures for the upper triangle are the correlation coefficients for the weekly data; figure for the lower triangle are correlation coefficients estimated using daily data 19 Table 3 Unit root tests ADF Market Level Australia Japan Hong Kong Singapore China Malaysia Philippines Taiwan -2.155 -1.696 -1.633 -1.212 -0.787 -1.706 -1.658 -1.272 Australia Japan Hong Kong Singapore China Malaysia Philippines Taiwan -2.107 -1.512 -1.500 -1.619 -0.640 -1.736 -1.561 -1.226 1st difference Panel A: daily data -19.965*** -45.936*** -56.779*** -57.082*** -57.056*** -57.497*** -56.308*** -58.888*** Panel B: weekly data -17.565*** -30.874*** -26.608*** -13.247*** -27.945*** -26.536*** 17.803*** -26.798*** KPSS level first difference 5.647*** 2.762*** 3.706*** 2.206*** 4.866*** 1.696*** 1.450*** 3.060*** 0.537** 0.089 0.061 0.091 0.123 0.281 0.147 0.321 2.552*** 1.261*** 1.742*** 1.016*** 2.232*** 0.787*** 0.668** 1.385*** 0.413 0.095 0.049 0.115 0.096 0.216 0.126 0.241 Notes ADF – the Augmented Dickey-Fuller test with a constant with test critical values as: -2.865 (5%) and 3.438 (1%). The null hypothesis is that the time series has a unit root. KPSS – the Kwiatkowski-Philips-Schmidt-Shin test with test critical values as: 0.463 (5%) and 0.739 (1%). The null hypothesis is that the time series is stationary. ***- denotes statistical significance at the 1% level 20 Table 4 Results of Johansen multivariate co-integration tests: January 1995-December 2009 Trace Ho statistic r =1 r<=1 r<=2 r<=3 r<=4 r<=5 r<=6 r<=7 141.81 103.07 69.26 44.06 25.12 10.19 5.53 1.68 r =1 r<=1 r<=2 r<=3 r<=4 r<=5 r<=6 r<=7 142.41 104.91 72.58 48.52 27.91 12.78 7.41 2.36 5% CV Panel A: Daily Data 159.53 125.62 95.73 69.82 47.86 29.79 15.49 3.84 Panel B: Weekly data 159.53 125.62 95.73 69.82 47.86 29.79 15.49 3.84 Maximum Eigenvalue statistic 5% CV 38.74 33.81 25.21 18.93 14.94 4.66 3.84 1,.68 52.36 46.23 40.08 33.88 27.58 21.13 14.26 3.84 37.51 32.32 24.06 20.61 15.13 5.37 5.06 2.36 52.36 46.23 40.08 33.88 27.58 21.13 14.26 3.84 Notes: r is the number of co-integrating vectors. The critical values are from Mackinnon-HaugMichelis (1999). 21 Table 5 Lagrange Multiplier (LM) statistic for ARCH tests in securitized real estate markets: Jan 1995 – Dec 2009 Market ARCH(4) Japan Australia Hong Kong Singapore China Taiwan Malaysia Philippines 218.08* 294.96* 122.61* 79.81* 159.21* 14.72* 33.77* 5.09* Japan Australia Hong Kong Singapore China Taiwan Malaysia Philippines 16.37* 44.81* 9.94* 21.79* 5.73* 4.66* 14.29* 6.59* ARCH(8) MARCH(1) Panel A: Daily data 112.09* 254.28* 414.25* 683.11* 34.69* 338.38* 33.31* 164.02* 108.66* 241.72* 6.32 35.10* 14.54* 1068.50* 0.67 49.43* Panel B: Week ly data 10.86* 134.59* 31.98* 171.22* 5.62* 47.15* 11.61* 30.92* 4.85* 33.44* 5.44* 9.73 8.22* 65.04* 4.42* 50.47* MARCH(4) MARCH(8) 662.84* 919.50* 528.31* 303.25* 481.14* 85.50* 1239.45* 104.22* 765.35* 1143.03* 650.42* 409.84* 564.98* 116.91* 1293.10* 175.43* 197.38* 352.30* 111.83* 131.69* 62.312** 37.18 320.21* 86.48* 256.64* 387.92* 183.58* 226.57* 139.76* 83.98 371.57* 138.19* Notes: (a) ARCH(4) and ARCH(8) are tests for the ARCH effects with four lags and eight lags respectively for the own volatility (squared return); (b) MARCH(1), MARCH(4) and MARCH(8) are multivariate ARCH tests that include respectively, one, four and eight lagged volatility of other markets, (c) * - indicates statistical significance at least at the 5% level 22 Table 6 Results of Modified Multivariate Co-integration test with GARCH Effect for Securitized Real Estate Markets: Jan95- Dec 09 (Full-period) Market Model A All N 8 B C Asia-Pacific (developed) Asia-Pacific (emerging) 4 4 R 1 2 1 1 ψ -0.0892*** -0.0853*** -0.0728*** -0.0642*** t-stat -6.315 -5.834 -5.454 -5.021 10% -5.235 -5.235 -3.812 -3.812 critical values 5% -5.235 -5.235 -4.099 -4.099 1% -5.711 -5.711 -4.648 -4.648 t-stat -5.613 -5.047 -5.518 -4.983 -3.712 -3.287 10% -4.974 -4.974 -4.717 -3.821 -3.821 -3.460 critical values 5% -5.529 -5.529 -5.002 -4.110 -4.110 -3.752 1% -5.805 -5.805 -5.550 -4.667 -4.667 -4.312 Panel B: Weekly data Model A Market All N 8 A1 B C C1 All (w/out Taiwan) Asia-Pacific (developed) Asia-Pacific (emerging) Asian emerging (w/out Taiwan) 7 4 4 3 R 1 2 1 1 1 1 ψ -0.1761** -0.1759* -0.1595** -0.1508*** -0.1094 -0.1032 Notes: (a) Based on S&P Global Property - All (Japan, Australia, Hong Kong, Singapore, China, Taiwan, Malaysia, Philippines); Asia-Pacific (developed) (Japan, Australia, Hong Kong, Singapore); Asia-Pacific (developing) (China, Taiwan, Malaysia, Philippines); (b) N refers to the number of markets; R refers to the canonical variates derived from step 2 (see methodology)-the maximum canonical correlation is used for the row of R=1; whereas the second highest (significant) canonical correlation is used for the row of R=2; ψ is the portfolio weight coefficient in equation 4(a) with GARCH effect: (4a) U jt = ψV jt + ς t ; critical values are derived from Table 2 in McKinnon (1991); ***, **, - denotes statistical significance at the 1% and 5% level 23 Table 7 Results of Bivariate Co-integration test with GARCH Effect for Securitized Real Estate Markets: Jan95- Dec 09 (Full-period) R=1 CN/HK CN/TW CN/PH CN/JP CN/SG CN/MA CN/AU HK/TW HK/PH HK/JP HK/SG HK/MA HK/AU TW/PH TW/JP TW/SG TW/MA TW/AU PH/JP PH/SG PH/MA PH/AU JP/SG JP/MA JP/AU SG/MA SG/AU MA/AU DEV/EMEG Weekly data Coefficient t-statistic -0.0944* -3.084 -0.0386 -1.21 -0.0621 -1.851 -0.0683 -2.088 -0.0672 -2.173 -0.0599 -2.129 -0.0292 -1.31 -0.0656 1.876 -0.0778 -2.799 -0.0618 -1.876 -0.1063* -3.067 -0.0537 -2.053 -0.0406 -1.537 -0.0865 -2.562 -0.0459 -1.385 -0.0308 -0.962 -0.0661 -2.557 -0.0371 -1.697 -0.065 -2.073 -0.1216*** -4.194 -0.0729 -2.596 -0.0358 -1.499 -0.0708 -2.122 -0.0395 -1.539 -0.0401 -1.635 -0.0321 -1.632 -0.0365 -1.499 -0.0286 -1.292 -0.0735 -2.297 Daily data Coefficient -0.0412* -0.0224 -0.0275 -0.0331 -0.0377 -0.0161 -0.0201 -0.0185 -0.0306 -0.0283 -0.0388* -0.0246 -0.0158 -0.0389 -0.0179 -0.0081 -0.0312 -0.0191 -0.0410* -0.0659*** -0.0376* -0.0186 -0.0420** -0.0218 -0.0206 -0.0165 -0.0155 -0.0121 -0.0373 t-statistic -3.242 -1.679 -2.037 -2.531 -2.975 -1.486 -2.042 -1.346 -2.297 -2.137 -3.167 -2.368 -1.441 -2.671 -1.272 -0.591 -2.601 -1.973 -3.112 -6.259 -3.241 -1.721 -3.379 -1.885 -1.759 -1.695 -1.596 -1.236 -2.119 Notes: (a) This table presents the ψ estimates, the portfolio weight coefficient and its t-statistics, in equation 4(a) with GARCH effect: (4a) U jt = ψV jt + ς t ; (b) Based on S&P property – Japan (JP), Australia (AU), Hong Kong (HK), Singapore (SG), China (CH), Taiwan (TW), Malaysia (MA), Philippines (PH); Asia-Pacific (developed) (DEV) (JP, AU, HK, SG); Asia-Pacific (developing) (EMEG) (CH, TW, MA, PH) (c) R=1 refers to the first canonical variates derived from step 2 (see methodology)-the maximum canonical correlation is used for the row of R=1; critical values are derived from Table 2 in McKinnon (1991) (10%: 3.061; 5%: 3.360 and 1%: 3.939); ***, **, * denotes statistical significance at the 1%, 5% and 10% level; significant coefficients are bolded.. 24 Table 8 Results of Modified Multivariate Co-integration test with GARCH Effect for Securitized Real Estate Markets: January 2005- December 2009 (includes the Global Financial Crisis period) Panel A: Daily data Model A B C Markets All Asia-Pacific (developed) Asia-Pacific (emerging) N 8 4 4 R 1 1 1 N 8 4 4 R 1 1 1 ψ -0.1391*** -0.0654 -0.0705 t-stat -6.5251 -3.145 -2.807 10% -4.964 -3.187 -3.187 critical values 5% -5.247 -4.105 -4.105 1% -5.788 -4.657 -4.657 t-stat -5.471 -3.556 -2.611 10% -5.021 -3.843 -3.843 critical values 5% -5.318 -4.139 -4.139 1% -5.892 -4.714 -4.714 Panel B: Weekly data Model A B C Markets All Asia-Pacific (developed) Asia-Pacific (emerging) ψ -0.2904** -0.2367 -0.1527 Notes: This table reports the common volatility results based on the modified co-integration test with GARCH effect from Jan 05 to Dec 09 which covers the global financial crisis period. Based on S&P Global property - All (Japan, Australia, Hong Kong, Singapore, China, Taiwan, Malaysia, Philippines); Asia-Pacific (developed) (Japan, Australia, Hong Kong, Singapore); Asia-Pacific (developing) (China, Taiwan, Malaysia, Philippines); N refers to the number of markets; R refers to the canonical variates derived from step 2 (see methodology)-the maximum canonical correlation is used for the row of R=1; whereas the second highest canonical correlation is used for the row of R=2; ψ is the portfolio weight coefficient in equation 4(a) with GARCH effect: (4a) U jt = ψV jt + ς t ; critical values are derived from Table 2 in McKinnon (1991); ***, **, - denotes statistical significance at the 1% and 5% level. 25 Table 9 Results of Bivariate Co-integration test with GARCH Effect for Securitized Real Estate Markets: January 2005- December 2009 (includes the Global Financial Crisis period) R=1 CN/HK CN/TW CN/PH CN/JP CN/SG CN/MA CN/AU HK/TW HK/PH HK/JP HK/SG HK/MA HK/AU TW/PH TW/JP TW/SG TW/MA TW/AU PH/JP PH/SG PH/MA PH/AU JP/SG JP/MA JP/AU SG/MA SG/AU MA/AU DEV/EMEG Weekly data Coefficient -0.2089* -0.1534 -0.1253 -0.0689 -0.0863 -0.1036 -0.0671 -0.1894* -0.0965 -0.1138 -0.0978 -0.0903 -0.0558 -0.0922 -0.0591 -0.0591 -0.1353 -0.0577 -0.8451 -0.2031** -0.0966 -0.0877 -0.1071 -0.1381 -0.0775 -0.1082 -0.0811 -0.0667 -0.0011 Daily data t-statistic -3.318 -2.931 -1.901 -1.938 -1.777 -2.156 -1.441 3.304 -1.662 -2.211 -2.145 -1.685 -1.183 -1.471 -0.882 -0.882 -2.565 -1.013 -2.868 3.636 -1.471 -1.451 -2.487 -2.674 -2.146 -2.417 -1.902 -1.635 -0.026 Coefficient -0.0874** -0.0589 -0.0598 -0.0393 -0.0315 -0.0483 -0.0293 -0.0731* -0.0418 -0.0463 -0.0458 -0.0383 -0.0225 -0.0488 -0.0168 -0.0495 -0.0675 -0.0285 -0.0582 -0.0834 -0.0473 -0.0461 -0.0513 -0.0506 -0.0306 -0.0234 -0.0361 -0.0271 -0.0052 t-statistic -3.435 -2.438 -2.261 -2.101 -1.628 -2.155 -1.307 -3.054 -1.759 -2.301 -2.141 -1.831 -1.026 -1.776 -0.768 -2.171 -2.667 -1.198 -2.298 -2.979 -1.746 -1.822 -2.982 -2.666 -1.798 -1.071 -1.927 -1.406 -0.296 Notes: (a) This table presents the ψ estimates, the portfolio weight coefficient and its t-statistics, in equation 4(a) with GARCH effect: (4a) U jt = ψV jt + ς t ; (b) Based on S&P property – Japan (JP), Australia (AU), Hong Kong (HK), Singapore (SG), China (CH), Taiwan (TW), Malaysia (MA), Philippines (PH); Asia-Pacific (developed) (DEV) (JP, AU, HK, SG); Asia-Pacific (emerging) (EMEG) (CH, TW, MA, PH) (c) R=1 refers to the first canonical variates derived from step 2 (see methodology)-the maximum canonical correlation is used for the row of R=1; critical values are derived from Table 2 in McKinnon (1991) (10%: 3.061; 5%: 3.360 and 1%: 3.939); **, * - denotes statistical significance at the 5% and 10% level; significant coefficients are bolded.. 26 Figure 1 Securitized real estate markets: logarithmic total return index movement 3.0 2.6 3.0 Australia 2.8 Japan Hong Kong 2.8 2.4 2.6 2.2 2.6 2.4 2.4 2.0 2.2 2.2 1.8 2.0 2.0 1.8 96 98 00 02 04 06 08 3.0 1.6 96 98 00 02 04 06 08 3.2 98 00 02 04 06 08 06 08 2.6 China Singapore 2.8 96 Malaysia 2.4 2.8 2.6 2.2 2.4 2.4 2.2 2.0 2.0 1.8 2.0 1.6 1.6 1.8 1.6 1.2 96 98 00 02 04 06 08 1.4 96 98 00 02 04 06 08 06 08 96 98 00 02 04 2.2 2.6 The Philippines Taiwan 2.0 2.4 1.8 2.2 1.6 1.4 2.0 1.2 1.8 1.0 1.6 0.8 96 98 00 02 04 06 08 96 98 00 02 04 Source: S & P Global Property 27