Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 The Effect of Foreign Institutional Investors before and After QFII Elimination: Evidence from Taiwan Ming-Chang Cheng*, Chien-Chi Lee**, Ching-Hwa Lee*** and Chao-Tan Tseng**** In this article, we found that Taiwan benefited from the elimination of the QFII (Qualified Foreign Institutional Investors) system and that the destabilizing effects of institutional investors were diminished. Using 10 years of daily data, we concluded the following. (1) Foreign investors do have a stabilizing effect on the stock market, except during a crisis period. (2) There is no strong evidence to prove that foreign investors destabilized the currency market. (3) Foreign investors had a slight stronger impact than domestic investors on the stock market during the financial tsunami. (4) The role of foreign investors in Taiwan has changed following the elimination of the QFII system. The empirical results have policy implications for those countries that still impose regulations on foreign capital flows and shed light on the question of whether a small, flat, and export-oriented economy could benefit from financial deregulation. JEL Codes: F65, G15, G18 1. Introduction 1.1 Research motivation In last few decades, financial liberalization has become the mainstream in many emerging markets, including Taiwan. As an emerging country, the Taiwanese government has removed restrictions on international capital flows step by step, loosening limitations on the degree of foreigners’ participation in Taiwan’s stock market. However, before the Taiwanese government completely eliminated the Qualified Foreign * Department of Business Administration, National Chung Cheng University, Taiwan **Department of Business Administration, National Chung Cheng University, Taiwan; Department of Hospitality, Taiwan Shoufu University, Taiwan ***Department of Business Administration, National Chung Cheng University, Taiwan ****Department of Business Administration, National Chung Cheng University, Taiwan 1 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Institutional Investor system (QFII) and prepared to enjoy the benefits of liberalization, we witnessed the damaging effects of powerful international capital flows in emerging countries such as the Mexican peso crisis (1994/1995), the Asian financial crisis (1997/1998), the Russian financial crisis (1998), and the Brazilian crisis (1999). Though Taiwan was not heavily affected by these crises, we still suffered moderately 1. Radelet and Sachs (1998) concluded that large-scale movements of international capital flow were at the core of the Asian crisis. That is, the behavior of international capital flows may offset some of the advantages of liberalization and internationalization. Hence, this study focused on the influence of foreign capital flows. We examined the effect of foreign investors in the stock market and currency market. The objective of this paper is to determine the role of foreign investors before and after the elimination of the QFII system in Taiwan, including during the time of 2008 Financial Tsunami. 1.2 Research background International capital flows from country to country. These cross-border transactions not only take advantage of high-return markets but also reduce the risk to their portfolios by diversification. At the end of 2009, Taiwan’s stock market had accumulated approximately 1.768 trillion TWD capital inflows from foreign investors since the elimination of the QFII system; 470 billion TWD net sales in 2008 were included. Foreign investors held only 15.06% of the market capitalization of Taiwan’s stock market in 2000, but the number increased to 31.64% in 2009. Furthermore, this figure is approximately 15 times greater than that for domestic institutions, which held 1.79% for investment trusts and 0.31% for securities dealers, respectively. This market share suggests the increasing importance of foreigners to Taiwan’s stock market. Because of the huge capital flow from foreign investors, when a crisis influenced the emerging market economies, foreign investors, as the providers of international capital flows, were blamed for destabilizing stock prices and currency values. However, not all crises are bad. A crisis might serve as a reflection of the flaws of the country’s existing policies. Policy flaws could be the reason why an economy was attacked by international speculators, which were blamed for triggering financial disasters. For example, Mundell (2000) pointed out that the pegged rate may serve as a useful measure under certain circumstances, but not as a perpetual measure, because it causes policy conflicts and eventually leads to a currency crisis. The time bombs started counting down when the government adopted pegged rate policy, as it did in Mexico, Thailand, and Indonesia. As a shallow economy, Taiwan exhibited large fluctuations in the stock and exchange 1 Taiwan performed well compared with what other countries suffered during the Asian crisis period. Exchange rate: TWD dropped by 20%, Thai Baht by 55%, South Korean Won by 50%, Malaysian Ringgit by 42%, and Indonesian Rupiah by 70%. Stock market: Taiwan rose by 18.1%, South Korea and Southeast Asia dropped by 30% to 55%. 2 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 market, even in the non-crisis period (from 2000 to 2007). The foreign exchange rate (TWD/$) ranged from 30.302 to 35.168, and the stock index ranged from 3446.26 to 10202.2. As a free market, the capital flows from foreign investors in Taiwan are considered one of the most influential market powers. By 2001, foreigners owned 15.06% of the stock market capitalization and 5.89% of trading volume compared with 34.5% of the stock market capitalization and 17.62% of trading volume in 2007, respectively. Thus, there is evidence that foreign investors had demonstrated their forceful growth in Taiwan before the crisis. Table 1. Net purchases of institutional investors (in 100 million NTD) 2000 Foreign Investors 2001 2002 2003 2004 2005 2006 5,489.56 2,839.66 7,194.15 5,581.09 2007 741.29 2008 2009 -4,700.02 4,801.40 Total(100 m) 1,466.65 3,062.51 278.97 26,755.26 Investment Trusts -160.25 -90.14 68.98 -56.73 -141.07 -863.28 -542.55 1,553.86 441.62 -289.26 -78.82 Securities Dealers -693.82 90.46 25.25 297.84 -143.41 169.13 69.01 159.54 437.77 100.08 511.85 Source: Taiwan Economic Journal Table 1 shows the 10-year net purchases of the three major institutional investors in the stock market. We can see the magnitude of foreign investors’ capital flow in Taiwan and find they only act as net sellers during the crisis. Net purchases of domestic institutions displayed less volume than foreigners most of time, and investment trusts seemed to be the opposite of foreign investors. Given the differences in magnitude between foreigners and locals, we would like to know whether foreign investors’ trading behavior, such as feedback trading2, exacerbates stock and exchange market volatility. 1.3 Research objectives Taiwan is a good example of crisis effects when capital restrictions are removed. The difference between the 1997 Asian crisis and the 2008 Financial Tsunami is telling, because the former occurred during a period of capital control regulation on foreign investors and the latter did not. Past studies could not provide evidence regarding whether free international flows stabilize or destabilize the stock market and currency market during a catastrophe because they lacked such similar events after deregulation. In this study, we aim to determine the effect of the elimination of the QFII system. Did the role of foreign investors in Taiwan change after financial liberalization? What role did foreign investors play during the crisis? Is the effect of foreign investors on stock and currency markets 2 Feedback trading: Trading conduct based on historical data. There are two types of feedback trading: negative and positive. Negative feedback trading means selling when prices rise and buying when they fall. Positive feedback trading means buying when prices rise and selling when they fall. 3 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 stabilizing or destabilizing before and after the elimination of QFII? Our hypotheses and explanations are stated as follows: (1) foreign net purchases destabilize the stock market, which means market returns are affected by foreign net purchases; (2) foreign net purchases destabilize the currency market; that is, currency returns are affected by foreign net purchases. Further, we compare foreign institutional investors with domestic institutional investors regardless of the existence of the QFII system and during the 2008 financial tsunami: (3) foreign net purchases destabilize the stock market and currency market more than domestic institutions. Then, we examine foreigners’ role in Taiwan: (4) has the role of foreign investors changed after the elimination of the QFII system? In other words, have foreign investors demonstrate different trading behaviors after deregulation? These hypotheses will be investigated using a vector autoregressive (VAR) model. The rest of this paper is organized as follows: Section 2 discusses the possible relationship between foreign investors and the local market. This section also introduces the methodology that we used and explains why it applies to this study. Section 3 describes the data and the methodology. Section 4 presents the empirical results and analyzes the phenomena that we found during each period. Section 5 concludes the study and makes suggestions to further studies. 2. Literature review The stock market in Taiwan is different from other countries; the majority is made up of individual investors. Thus far, individual investors own approximately 70% of daily trading volume. Three major institutional investors (securities dealers, investment trusts and foreign investors) only own approximately 30%. Institutional investors can be separated into two types: domestic and foreign. Since 2005, foreign institutions have exceeded domestic institutions in daily trading volume percentage, as Figure 1 shows. In 2008, foreign institutions reached a high of 22% of daily trading volume; their share has increased nearly 10 times in past 10 years. We found the trading volume of foreign institutional investors is still much less than that of individuals (22% vs. 61%). However, their investment strategies and behavior are considered to be indicators to individual investors. Unlike individual investors, foreign institutional investors have professional backgrounds and deep pockets. Arbel et al. (1983) and Brous and Kini (1994) concluded that institutional investors use their own information and professionals, collecting and analyzing data before devising strategies. Bacmann and Bolliger (2001) found that foreign analysts produce more timely and accurate forecasts than local analysts. Thus, individual investors are always concerned with the actions and strategies of foreign institutional investors. In addition, media reports always focus on the 4 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 movements of foreign institutional investors. Thus, it is even easier for individual investors to follow foreign institutional investors’ strategies. This section discusses the effects of foreign investors on the stock market and foreign exchange market. Past studies did not come up a certain conclusion regarding whether foreign investors destabilize these two markets. Thus, the role that foreign investors play, disturbing and enhancing the volatility of local market, is still a controversial issue for academics. In the remaining sections, we discuss the negative effects of foreign investors first, followed by their positive effects on the markets. We also describe the reason that we chose to study Taiwan. Lastly, we explain why we use a vector autoregressive (VAR) model as our methodology at the end of the section. Figure 1. Trading volume of institutional investors in TSE (%) % 25.00 20.00 15.00 10.00 5.00 0.00 2000 2001 2002 2003 2004 Domestic Institution 2005 2006 2007 Foreign Institution 2008 2009 Year Source: Taiwan Stock Exchange 2.1 The negative side The Central Bank in Taiwan3 (CBC) held the opposite attitude toward foreign investors because they were thought to cause instability and fluctuations in the economy. Taiwan is a shallow economy; both the stock market and currency market are easily affected by international and local events. In addition, firms rely on importing and exporting so much that fluctuations in exchange rates can cause severe damages to them. Thus, the CBC preferred a step-by-step capital deregulation process to open the market. Because of the large capital flows from foreign investors, it is also said that foreign investors may cause market volatility and abnormal returns. Scholes (1972) indicated that 3 The Central Bank in Taiwan (CBC) is the Central Bank of the Republic of China 5 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 the trading behaviors of foreign investors often cause market instability and abnormal returns because of their large capital flows. Some research has focused on the trading behaviors of foreign investors. Bekaert et al. (2002) studied 20 emerging countries and found that foreign investors were prone to ―capital flight‖: when capital leaves, it leaves faster than it entered most of these countries. The authors also suggested that foreign investors’ trading behavior often causes stock market instability and disturbs the exchange rate. Foreign investors’ strategies were also examined. Dornbusch and Park (1994) argued that foreign investors’ trading strategies allow stock prices overreact to changes in fundamentals and, thus, lead to higher volatility. Eswar et al. (2003) also indicated that because foreign investors employ herding4 and feedback trading strategies, which can move stock prices away from fundamentals, fickle capital flows could increase the volatility of equity returns and destabilize equity markets. There are also studies of the role of foreign investors during the 1997 East Asian Crisis. Krugman (1998) argued that speculative capital flows are responsible for the virulence of these crises and their contagion effects; he suggested that imposing temporary capital controls could be an effective way to help stabilize the economy during a crisis. Nofsinger and Sias (1999) and Stiglitz (1998) indicated that positive feedback trading by foreign investors can partially explain an excess of volatility in stock prices, driving markets away from fundamentals and destabilizing them. Lin (2006) showed that the strategies of foreign investors, such as feedback trading strategies, did affect Taiwanese stock market volatility. The crisis led to a breakdown of international financial transactions and resulted in costly adjustments for the economies of emerging markets. Previous studies seem to support the CBC’s claim about the instability caused by foreign investors. 2.2 The positive side One of the reasons that the government opened the market was that such a policy helps stabilize, enlarging the domestic stock market and enhancing market efficiency. The Taiwan Securities and Exchange Commission 5 (TSEC) emphasized the advantage of foreign investors through, for example, stabilization and demonstration effects. The TSEC encouraged the government to accelerate the speed with which it opened the stock market to foreign investors. Wang and Shen (1999) suggested that foreign investors have only mild influence on the volatility of stock returns and had a positive influence on exchange rate 4 Herd behavior is the tendency for individuals to mimic the actions (rational or irrational) of a larger group. The Taiwan Securities and Exchange Commission (TSEC), which was renamed the Taiwan Securities and Futures Commission in 1997 and the Taiwan Securities and Futures Bureau in 2004. The operation of the TSEC is overseen by the Securities & Futures Bureau (SFB), which has the exclusive authority to inspect the securities market operations and processes of the TSEC. 5 6 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 volatility during the process of Taiwan’s financial liberalization. Bekaert and Harvey (1997) studied 21 emerging countries and found that capital market liberalizations significantly decreased market volatility in emerging countries, especially in Taiwan, Mexico, Brazil, and Argentina. Bohn and Tesar (1996) pointed out that foreign investors were not the main cause of stock market instability. Hamao and Mei (2001) found no evidence to support the claim that trading by foreign investors tends to increase market volatility more than domestic investors. De Long et al. (1990) offered an analysis of foreign investors’ behavior, suggesting that, though positive feedback trading is detectable, it did not necessarily exacerbate the destabilization of the market. Some studies even suggest that foreign investors did not cause instability during the Asian financial crisis period. Choe et al. (1999) showed that foreign equity investors did practice herding during the Korean crisis period, but they found no convincing evidence that foreign investors played a destabilizing role in the stock market. Kim and Wei (2002) also suggested that the offshore funds in Korea are the wrong group to blame for exacerbating the volatility in the emerging markets. Karolyi (2002) pointed out that, though foreigners became net sellers in the period that Japan was suffering the Asian financial crisis, there is no evidence to confirm that foreign investors destabilized Japanese markets. Wang (2007) suggested that increasing the investor-base as a result of liberalization actually decreased total return volatility. Because each investor has only limited information and a set of available securities, foreign investors make the investor base larger, which fosters liquid information. Khanna and Palepu (1999) showed that foreign investors are better monitors of corporate management than domestic institutions. These studies all concluded that foreign investors were not the crucial factor in the instability of the stock market, which means that TSEC’s claims were also supported by scholars. 2.3 Why study Taiwan? From the above literature review, we can say the role of foreign investors varies from country to country. As Johnson and Mitton (2003) stated, the benefits of free capital flows are still debated among policymakers and scholars. Corsetti et al (2001) pointed out that large institutional investors exacerbated market pressure on smaller- and medium-sized emerging economies in the crisis period, but large-sized markets were not affected. Thus, the effect of foreign investors on the stock market and currency market is also controversial in different periods. Furthermore, the proportion of foreign investors in the stock market and the magnitude of foreign investors in the economic system are not the same in each country. Taiwan is a worthy country to study for the following three reasons. First, thus far, it has been the severest financial crisis Taiwan has encountered after the elimination of QFII system. Thus, it addresses a key question: does financial liberalization help stabilize the stock market and currency market? Second, the proportion of daily trading volume of 7 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 foreign investors (Figure 1) has doubled since the government abandoned the QFII system. Does this cause damage along with the increase of foreign holding? Finally, as Taiwan is a shallow economy, how influential could foreign investors be on the Taiwan stock market and exchange market now that their capital can flow without limitation? We focus on the role of foreign investors through daily data from 2000 to 2009. Do our empirical results reveal what foreign investors’ role was during these years, and are there any different effects between domestic institutions and foreign investors after the elimination of the QFII system or during the Financial Tsunami? Answering this question can give policymakers in countries with their own QFII system, such as China, a reference with which to decide whether to speed up the capital market liberalization process. 2.4 Why a vector autoregressive model? According to data from the Taiwan Stock Exchange (TSE), in our sample period, we found that foreign investors were net purchasers, with an average of 1,552 million purchases per day before crisis. After the crisis, they became net sellers, with an average of 1,888 million sales per day in 2008. However, foreign investors turned back into net purchasers, averaging 1,913 million purchases per day as the stock market boomed. We used a VAR model to examine the joint relationship of stock market returns and currency market returns and foreign investors’ net flows. Sims (1980) invented the VAR model, which allows every included variable to be endogenous in order to avoid setting too many inappropriate limitations on variables. Karolyi (2002) employed a tri-variable VAR model, allowing market returns and currency returns to depend not only on past returns but also on past net flows of foreign investment. The ―net purchase‖ variable in this study was highly serially correlated. Thus, it also depends on past net purchases and past returns in order to test for foreign investors’ feedback trading behavior. As Lin (2006) suggested, feedback trading of foreign investors can be detected in Taiwan by employing market returns and net purchase of foreign investors in the VAR model. Because of the characteristics of the VAR model, we adopted it as the methodology in this study. Moreover, we use Granger causality to find the relationship among market returns, currency returns, and net purchases. We used impulse response function to analyze the effect of a random shock on our variables. To be certain, variance decomposition is also adopted to show the magnitude of the effect of other variables. 3. Data and methodology Our main data source is the Taiwan Economic Journal (TEJ). The daily data comprise returns of the stock market and currency market and net purchases of foreign investors, investment trusts, and securities dealers. In calculating the stock market return, we use ln(Indext / Indext-1), which was also provided by the TEJ database. Currency return was 8 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 calculated as -ln(ERt / ERt-1); we add a minus to adjust the value. Because of differences in European terms (TWD/$), when the value of the TWD appreciates, the exchange rate decreases. This calculation provides a more intuitive way for us to distinguish the change in value of the TWD. Net purchase was computed by purchases minus sales. In this study, we divided the entire sample into three sub-samples: sub 1 represents the period before the elimination of the QFII system, from January 4, 2000 to October 1, 2003; sub 2 represents the period without crisis after the elimination of the QFII system, from October 2, 20036 to July 18, 2007; and sub 3 represents the period since the crisis, from July 19, 20077 to December 31, 20098. The entire sample covers the period between January 4, 2000 to December 31, 2009. That is, our sample covers four years before the elimination of the QFII system and four years after its elimination, with 948 and 941 trading days, respectively. This large sample allows us to find differences in the relatively long run. The crisis after the elimination of the QFII system lasted 2 years, with 615 trading days. Figure 2 Daily foreign investment in Taiwan stock market: 2000-2009 12,000 4,800 Market index 10,000 Cumulate FI’s net purchases Exchange rate 4,000 8,000 3,200 6,000 2,400 TSE volume 4,000 1,600 2,000 800 0 0 1/ 20 09 7/ 20 09 -800 1/ 20 08 7/ 20 08 1/ 20 07 7/ 20 07 1/ 20 06 7/ 20 06 1/ 20 04 7/ 20 04 1/ 20 03 7/ 20 03 1/ 20 02 7/ 20 02 1/ 20 01 7/ 20 01 1/ 20 00 7/ 20 00 1/ 20 05 7/ 20 05 FI’s net purchases -2,000 Left axis (-2,000~12,000): Market index: Taiwan weighted stock index. Right axis (-800~4,800): Exchange rate: (TWD/$)*100. Cumulative foreign investors’ net purchases (billion, TWD). Foreign investors’ net purchases (100 million, TWD). TSE volume (100 million, TWD) Source: Taiwan Economic Journal We provide Figure 2 to show Taiwan’s weighted stock index and currency values for the entire sample; net purchases of foreign investors were also included. The time series 6 October 2, 2003 was the day that the Taiwanese government abandoned the QFII system. July 19, 2007 was the day that Bear Stearns Companies’ two funds collapsed (Bear Stearns High-Grade Structured Credit Fund and Bear Stearns High-Grade Structured Credit Enhanced Leveraged Fund). The same day, the Dow Jones Industrial Average Index climbed to 14,000 points. From that point, the U.S. stock market started entering a bear market. 8 December 31, 2009 was the end-point for the available data we could collect. 7 9 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 figure helps us to observe the trend of our variables across the entire sample period. During the crisis, the stock index reached 9,000 in July 2007 and achieved its peak of 9,859.65 in October 2007. However, the index experienced sustained decline to below 4,500 in late 2008. TSE volume presented significant decline along with market index. TWD/$ also showed dramatic depreciation, from its peak of 30.1 to its bottom of 35.174. However, local policy9 should be considered to partly explain this decrease. Cumulative foreign investors’ net purchases demonstrate selling strategies, a trading strategy inverse to the one previously used. Moreover, we find that net purchases of foreign investors tend to be more volatile than before, possibly suggesting that these foreign flows are fickle and speculative. 3.1 Methodology To analyze the destabilizing effect of foreign net purchases on stock or currency returns, and to determine whether foreigners used feedback trading, we adopt the VAR model, which employs market returns, currency returns and net purchases. Because there are strong positive correlations among variables and autocorrelation within variables themselves, it is difficult to determine their relationship. Sims (1980) invented the VAR model to solve these problems by establishing a dynamic structural model. The VAR model is a structural model that enables the variables in this study be driven by the lags of other variables. Using Schwarz criterion (SC) and evaluating lag structure in the dynamic system, we determined that four lags10 were enough to capture most of the effects of institutional investors’ net purchases. Let market returns, m; currency returns, x; net purchases, n; then the tri-variate equations can be written as follows: mt C10 B111mt 1 B112 xt 1 B113nt 1 ... Bi11mt i Bi12 xt i Bi13nt i e yt xt C 20 B121mt 1 B122 xt 1 B123nt 1 ... Bi21mt i Bi22 xt i Bi23nt i e xt nt C30 B131mt 1 B132 xt 1 B133nt 1 ... Bi31mt 4 Bi32 xt i Bi33nt i e zt …(1) To make it easier to read, Eq. (1) can be derived as follows: L yt sYt s et , E(et et' ) s 1 …(2) Where yt is a 3×1 vector of daily observations of market returns, currency returns and net purchases at time t; α is a 3×1 vector of constant parameters; βs is a 3×3 matrix of parameters at time s. L represents the lags for the model and μt is a 3×1 vector of errors 9 Similar to other export-oriented countries, the Taiwanese government intended to depreciate the TWD in order to boost export volume in the early crisis. 10 SC and AIC suggested one lag is the most parsimonious model. However, one lag is not enough for our purposes. We then tested our model from one lag to ten lags and found that four lags could reflect most of the information that we want. Lags above four only needlessly extend the model with lags carrying less information. 10 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 of yt given all the past y’s. The elements of βs measure the direct effect that a change in the return on the j-th variable would have on the i-th variable in s days. Each investor’s net purchases series was used to estimate this model. According to Sims (1980), the coefficients in the VAR model do not effectively reveal economic implications. Three important applications were developed to interpret the meanings of the VAR results. Using a causality test, an impulse response analysis, and variance decomposition makes the VAR model more readable and meaningful in its analysis. A Granger causality test was used to determine whether the lags of past returns or purchases are jointly significant predictors of future returns or purchases. We tested market returns, currency returns, and net purchases of each institutional investor. Eq. (1) can be written in the following form: k k k i 1 k i 1 k i 1 k i 1 k i 1 k i 1 k i 1 i 1 i 1 mt C10 Gi11mt i Gi12 xt i Gi13 nt i e yt xt C 20 Gi21mt i Gi22 xt i Gi23 nt i e xt …(3) nt C30 Gi31mt i Gi32 xt i Gi33 nt i e zt Where G is the set of all coefficients of a certain variable. For example, x Granger causes m if and only if the coefficients in G12 are not all equal to zero, which rejects the null hypothesis of Granger causality that G = 0. There are two types of causality: unidirectional causality and bidirectional causality. In the former, one variable Granger causes the other variable. In the latter, two variables Granger cause each other. To trace the cross-equation feedbacks through Eq. (2), an alternative method is to use the multiplier analysis or innovative accounting technique based on the moving average. The moving average form can be written as follows: yt s et s s 0 …(4) Where yt is a linear combination of current and past one-step-ahead forecast innovations. The (i,j)-th element of matrix Φs measures the response of the i-th variable in s days to a unit random shock in the j-th variable and none in the other variables. However, the vector of et is serially correlated, a serious flaw because we would like to determine the distinct response patterns of the VAR model. Thus, we adopted Choleski factorization. The Σε can be decomposed into VV’ by using Choleski factorization to remove the problem we faced. The orthogonalizing transformation proceeds as follows: E(et et' ) ADA' AD1/ 2 D1/ 2 A' VV ' …(5) 11 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Where A is a square matrix of the sample covariance matrix Σε, D is a diagonal matrix, and V is a nonsingular, lower triangular matrix with positive elements on the diagonal. Then, Eq. (4) can be rewritten as follows: yt Cs kt , kt V 1et s 0 …(6) Where Cs is a square matrix, the (i,j)-th elements of Cs stands for the impulse response of the i-th variable in s periods to a shock of one standard error in the j-th variable. The series of kt is serially uncorrelated error. We plot the impulse responses and 95% confidence intervals using standard errors from the Monte Carlo integration technique. Through Choleski factorization, the moving average form of Eq. (4) can be used to allocate the forecast variance of each element in y to different sources of shocks. The error of the optimal T+1 ahead forecast is: yt T 1 Rij2, h h 0 …(7) The element of forecast error variance in the T+1 step ahead forecast of yi, which is accounted for by innovations in yj. That is, R2ij,h represents the contribution by innovation in the j-th variable to variance of the i-th variable at time h. Variance decomposition analysis provides a measure of the overall relative importance of the markets in generating the fluctuations in daily net purchases from past net flows, stock market returns ,and currency returns. We report the percentage of total forecast error variance for stock market returns, TWD/dollar exchange rates returns and net purchases up to 5, 10 ,and 15 days ahead accounted for by innovations of past market returns, exchange rates returns and net purchases. 4. Empirical results 4.1 Summary statistics Table 2 presents summary statistics for market returns, currency returns, and net purchases by each investor group during the QFII, QFII-eliminated, crisis, and entire sample. Over the entire period, foreign investors were the most aggressive net purchasers of Taiwanese equity, at 1,000 million per day. Foreign investors’ net purchases increased in 12 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 sub 2 compared with sub 1, indicating that deregulation was successful at attracting international capital flows (from 9.57 to 21.5). However, the shift to negative net purchases by foreign investors and negative market returns suggests that the expectation that foreign investors tend to sell in crisis is true. Domestic institutions did not show the same pattern as foreign investors. Investment trusts revealed opposite strategies from foreign investors across the entire sample. Securities dealers apparently had their own approach. However, domestic institutions became net purchasers during the crisis. Comparing sub 1 with sub 2, we found that, as the investor base broadened and information liquidation increased, the standard deviation of stock market returns decreased following liberalization. This result11 met the government’s goal for opening the stock market. Though the standard deviation of currency returns slightly increased, the change is not strongly statistically significant (10% level). The result for the currency market suggested that the CBC was too concerned with the consequences of deregulation. It is also possible that the CBC still has a visible hand in the currency market. However, when the U.S. subprime mortgage crunch tolled the bell for the crisis in late 2007, the bloom of deregulation started fading in Taiwan. The standard deviation of market returns increased to the same level as it had been before. Has deregulation helped stabilize these two markets? Or are there other reasons that offset the advantages of liberalization? Table 2. Summary statistics Entire sample (2000/01/04~2009/12/31) Market returns TWD/$ returns Foreign Investors’ net Investment Trusts’ net purchases(100m) Securities Dealers’ purchases(100m) net Mean -0.001252 -0.000664 10.68501 -0.031478 0.204413 S.D. 1.620951 0.24679 72.81381 11.97509 11.6345 Maximum Minimum 6.5246 -6.9123 2.898567 -2.956315 12 13 1252.88 -623.98 64.53 -88.76 63.79 -111.77 Trading 2504 days 2504 2504 2504 2504 Subpurchases(100m) 1 : QFII (2000/01/04~2003/10/01) Market returns TWD/$ returns Foreign Investors’ net Investment Trusts’ net purchases(100m) Securities Dealers’ net purchases(100m) Mean -0.043727 -0.007458 9.574473 -0.256983 -0.38192 S.D. 1.88326 0.227434 33.79942 13.09837 9.079974 Maximum Minimum 6.1721 -6.7745 2.898567 -2.956315 175.82 -154.6 64.53 -60.13 42.19 -38.31 Trading 948 days 948 948 948 948 Subpurchases(100m) 2 : QFII-eliminated Market returns (2003/10/02~2007/07/18) TWD/$ returns Foreign Investors’ net Mean 0.056351 0.003155 21.50359 S.D. 1.101084 0.241843 79.07887 Maximum Minimum 5.4189 -6.9123 1.006908 -1.006487 1252.88 -549.37 Trading 941 days 941 941 purchases(100m) 11 The standard deviation of the stock index significantly decreased from sub 1 (52.97) to sub 2 (26.33). The currency market also benefited from liberalization, as the standard deviation of the exchange rate significantly decreased from sub 1 (0.051) to sub 2 (0.026). However, both eventually rose to 62.99 and 0.044, respectively. 12 The largest net purchases of foreign investors, due to block trading when Philip Taiwan transferred all of its TSMC equity to its headquarters, Philip Deutschland. (December 28, 2005) 13 The largest net sales of foreign investors caused by Dow Jones slump. (July 27, 2007) 13 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Investment Trusts’ net Securities Dealers’ net purchases(100m) -1.102221 0.349458 10.10109 13.96242 Subpurchases(100m) 3 : In the crisis Market returns (2007/07/19~2009/12/31) TWD/$ returns Foreign Investors’ net Investment Trusts’ net purchases(100m) Securities Dealers’ net purchases(100m) Source: Taiwan Economic Journal purchases(100m) Mean -0.023915 0.003967 -4.156455 1.954455 0.886293 S.D. 1.837494 0.280795 99.37631 12.56904 11.18761 52.72 63.79 -88.76 -111.77 Maximum Minimum 6.5246 -6.7351 1.500921 -1.222136 14 579.09 -623.98 50.01 -49.39 41.58 -47.8 941 941 Trading 615 days 615 615 615 615 Table 3 shows the correlation coefficients of daily net purchases for each of the investment sectors, with market returns and currency returns. Foreign investors shared the same investment behavior as domestic institutional investors; the correlation coefficients between net purchases of foreign investors and market returns, net purchases of investment trusts and market returns, and net purchases of securities dealers and market returns are all strongly positive. The result is consistent with the correlation table in Lin (2006), which uses daily data from 1994 to 2003. The significant positive correlation coefficients among institutional investors suggest that herding behavior may exist in the stock market, similar to Kim and Wei’s (1999) and Kaminsky and Schmukler’s (1999) findings. The significant positive correlation coefficients among institutional investors suggest that herding behavior may exist in the stock market, similar to Kim and Wei’s (1999) and Kaminsky and Schmukler’s (1999) findings. There is a strong positive relation between each institutional investors’ trading activity. Table 3. Correlation coefficients Market returns 14 TWD/$ returns Foreign Investors Investment Trust Entire sample Market returns TWD/$ returns Foreign Investors’ net Investment Trusts’ net purchases Securities Dealers’ net purchases 1.000 0.276 *** 0.401 *** 0.397 *** 0.565 *** 1.000 0.270 *** 0.101 *** 0.161 *** 1.000 0.175 *** 0.354 *** 1.000 0.406 *** Sub 1 : QFII purchases Market returns TWD/$ returns Foreign Investors’ net Investment Trusts’ net purchases Securities Dealers’ net purchases 1.000 0.183 *** 0.362 *** 0.465 *** 0.584 *** 1.000 0.170 *** 0.087 *** 0.150 *** 1.000 0.280 *** 0.364 *** 1.000 0.496 *** Sub 2 : QFII-eliminated purchases Market returns 1.000 The virtually largest net purchases of foreign investors triggered by Ma’s victory in presidential election. (March 22, 2008) 14 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 TWD/$ returns Foreign Investors’ net Investment Trusts’ net purchases Securities Dealers’ net purchases 0.301 *** 0.395 *** 0.373 *** 0.694 *** 1.000 0.259 *** 0.082 ** 0.202 *** 1.000 0.162 *** 0.346 *** 1.000 0.396 *** Sub 3 : In the crisis purchases Market returns 1.000 TWD/$ returns 0.400 *** 1.000 Foreign Investors’ net 0.565 *** 0.364 *** 1.000 Investment Trusts’ net 0.325 *** 0.144 *** 0.224 *** 1.000 purchases Securities Dealers’ net 0.568 *** 0.111 *** 0.423 *** 0.374 *** purchases Note: When we adjusted the calculation of currency return to –ln(ERt/ERt-1), the correlation became positive. purchases *** = 1% significance level; ** = 5% significance level; * = 10% significance level Source: Taiwan Economic Journal Nevertheless, foreign investors showed increasing magnitude in both stock and currency markets during the crisis while domestic institutional investors’ magnitude diminished in the stock market. We also found that the correlation coefficients between market returns and currency returns are higher since deregulation, which means the frequent inflow and outflow of international capital flows enhanced the relationship between the stock market and the exchange market. The correlation coefficients between market returns and currency returns reached their highest in the crisis period compared to the non-crisis period. Similarly, the correlation coefficients between net purchases of foreign investors and currency returns increased following deregulation. Domestic institutions showed lower coefficients, which suggests lower demand in exchange than for foreign investors. We assume that domestic institutions would have less effect than foreign investors on the exchange market, no matter the status of the QFII system. 4.2 VAR model results Before we implement VAR in this study, we have to check whether the VAR model is suitable. Unit root tests were used to ensure that all the series that we employed are stationary. An augmented Dickey-Fuller test and a Kwiatkowski-Phillips-Schmidt-Shin test were adopted. As Table 4 shows, each variable series we employed is stationary. In this case, we do not have to implement a vector error correction model (VECE). The VAR is good enough for us to analyze the phenomena in Taiwan. Table 5 reports the estimation results by the VAR model for each of four different sectors in three periods. For each sector, the first four coefficients represent the lagged market returns, currency returns and net purchases. The Granger causality test shows that one variable can be forecasted by the lags of the other variable. In this section, we focus on the difference between sub 1 and sub 2 first. Then, we compare the changes in sub 2 with sub 3. Last, we will provide a 15 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 summary of our overall empirical results. Table 4. Unit root test ADF Variable T-Stat. KPSS Critical value (1%) LM-Stat. Critical value (10%) Market returns -47.369*** -3.433 0.179 0.347 TWD/$ returns -46.859*** -3.433 0.115 0.347 Foreign Investors’ net -20.195*** -3.433 0.185 0.347 Investment purchases Trusts’ net -33.018*** -3.433 0.337 0.347 -34.467*** -3.433 0.462* 0.347 Securities purchases Dealers’ net Series of securities dealers’ net purchases did not reject the null hypothesis at a 5% significant level in the purchases KPSS test. (critical value: 0.463). 4.2.1 Sub 1 vs. Sub 2 The results show that there is a little evidence to support the idea that foreign investors’ role in the stock market has changed following the elimination of the QFII system (see Table 5.a and Table 5.b). The first-lag coefficients of foreign investors’ net purchases in the two periods for market returns, 0.0065 and 0.0017 respectively, are significant and positive. There is only a slight change because all the coefficients of foreign investors’ purchases for market returns in sub 2 had diminished. Foreign investors still adopted positive feedback trading strategies; most coefficients of market returns for net purchases are positive and include statistically significant positive coefficients (3.556 in sub 1 and 15.191, 5.576 in sub 2). A Granger causality test also showed that net purchases are affected by market returns; the chi-square values are 47.426 and 44.771 in the two periods. Information contributions were also detected for net purchases of foreign investors. Granger caused market returns (11.659 and 9.441, respectively) with bidirectional causality, which indicates future net purchases have an impact on market returns and vice-versa. The results show only a small difference after the QFII system was eliminated. We thought that the step-by-step liberalization process effectively avoided drastic changes. However, net purchases of foreign investors Granger caused currency returns from an insignificant 6.623 to a significant 20.029, indicating that, as the volume of international capital flows increases, foreigners gained greater impact on currency market. In contrast, domestic institutions became less influential on the stock market. Both investment trusts and securities dealers were more powerful than foreigners in sub 1, as Table 5.a shows. Domestic institutions’ first-lag and third-lag coefficients were significant: 0.013 and -0.014 for investment trusts 0.027 and -0.013 for securities dealers. However, their influence diminished to only one significant coefficient: first-lag 0.009 for investment 16 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 trusts and third-lag -0.006 for securities dealers (see Table 5.b). Investment trusts revealed themselves to be negative feedback traders in two periods, as most of the coefficients are negative and were Granger caused by market returns (89.045 and 173.474). However, they had only a bidirectional causality with market returns in sub 1. In other words, feedback trading and information contribution were both detected only in sub 1. We found that investment trusts tended to sell stock when the TWD appreciated in two periods, though the coefficients are not statistically significant. Securities dealers turned into positive feedback traders in sub 2; the first-lag coefficient (2.127) and third-lag coefficient (1.048) are significant and positive, with an inverse causality from 1.952 to 19.112. We also found that currency returns had an increasing impact on securities dealers in sub 2 for the significant first-lag coefficient (3.393) and third-lag coefficient (4.315) and Granger caused net purchases of securities dealers. The results suggest that securities dealers tended to purchase stock when the TWD appreciated, unlike investment trusts. The results show that all institutional investors were feedback traders in sub 2, consistent with Froot et al. (2001). We found no strong evidence that foreign institutional investors destabilized the stock market more than domestic institutions in sub 1 and sub 2. However, we did find that foreign institutional investors have had an increasing impact on the currency market since the elimination of the QFII system. Though domestic institutions once had greater influence, it disappeared after deregulation. Liberalization was beneficial to Taiwan in the non-crisis period. 4.2.2 Sub 2 vs. Sub 3 The role of foreign investors changed during the crisis; they demonstrated a destabilizing effect on stock market, as Table 5.c shows. The coefficients of foreign investors’ net purchases for market returns became stronger than ever, from a first-lag coefficient of only 0.002 in sub 2 to a second-lag coefficient of -0.002 and a third coefficient of 0.003 in sub 3. Foreign investors’ positive feedback trading disappeared. The first-lag coefficient (3.505) of market returns to net purchases of foreign investors became less significant, and this time only foreign investors Granger caused market returns, a unidirectional causality (11.067). In other words, information contribution remains. This result shows that market returns were not able to predict net purchases of foreign investors but that net purchases of foreign investors still predicted market returns across the entire sample. The results were opposite those of Lin (2006), who found the existence of foreign investors’ feedback trading behavior but no information contribution in Taiwan during the Asian crisis. Apparently, the magnitude of shock and the degree of regulation on foreign investors may lead to different consequences in crisis. The influence of currency returns on net purchases of foreign investors has risen in the 17 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 crisis; the first-lag (21.663), third-lag (-31.881), and fourth-lag (29.523) coefficients of currency returns on the net purchases of foreign investors are statistically significant. However, we cannot tell whether foreign investors prefer buying stock when the TWD appreciates or depreciates because the signs were both positive and negative. The causality between currency returns and foreign investors’ net purchases has changed its direction. In sub 2, net purchases of foreign investors Granger caused currency returns. In sub 3, currency returns Granger caused the net purchases of foreign investors. It is also worth mentioning that we found a bidirectional causality between currency returns and market returns, which always happens alongside a financial crisis like the Asian crisis. This result is consistent with Granger et al. (2000), indicating that the impact of currency in crisis in a flatter economy was exacerbated by outside shocks. Domestic institutions also changed their behavior and showed asymmetry in the crisis: investment trusts and securities dealers embraced different strategies. Investment trusts still hold on to negative feedback trading strategies, with significant negative coefficients and net purchases Granger caused by market returns (85.08). Still, we found no information contribution in sub 3. In other words, only a unidirectional causality is detectable since the elimination of the QFII system. Investment trusts still tend to sell their stock holdings when TWD appreciates. Securities dealers reversed their trading behavior again; feedback trading strategies disappeared in sub 3. For the coefficients of market returns to net purchases of securities dealers, only the second-lag coefficient, (-0.441) is significant, and net purchases were not Granger caused by market returns (3.157). As for investment trusts, information contribution was not found after deregulation—the only pattern they shared in sub 3. Securities dealers’ preference for purchasing stock according to change in the exchange rate was unclear. The coefficients showed no significance and Granger causality also vanished. One thing worth to noticing is that securities dealers had a more slight destabilizing effect on market returns than foreign investors (for the third-lag, 0.018 and for the fourth-lag, -0.011; coefficients are significant.) The results show the differences between foreign investors’ and domestic institutions’ behavior and impact in the crisis. Foreign investors had a stronger impact than domestic institutions on the stock market and were affected by currency market more (see Table 5.c). It is worth pointing out that securities dealers also had a slight effect on the stock market regardless of the small volume they trade in sub 3. Investment trusts are less likely to be destabilizing than those for foreign investors and securities dealers. Finally, compared with foreign investors, domestic institutions showed a weaker relationship with the currency market. 4.2.3 Summary of VAR analysis In this section, we found that, despite the small scale (see Table 1), securities dealers also 18 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 demonstrated some destabilizing effects similar to foreign investors. The asymmetry in scale of the two institution investors resulted in similar consequences, suggesting that the amount of capital flows does not necessary stand for the influence on the stock market. Overall, the elimination of the QFII system does benefit Taiwan, as is evident in Table 2 and from the VAR results. The destabilizing effects of institutional investors were also reduced, as shown in Table 5.b. Foreign investors were feedback traders until the crisis hit Taiwan, but their net purchases constantly affect the next day of stock market returns across the entire sample. These findings were different from those for domestic institutional investors: investment trusts were negative feedback traders and securities dealers frequently changed strategies. The results of positive feedback traders for foreign investors and negative feedback traders for investment trusts are similar to Karolyi’s (2002) findings in Japan. For domestic institutions, the information contribution effects have disappeared since deregulation. The currency market was influenced only by foreign investors; domestic institutional investors showed no effect on it. In the VAR results, we could say that foreign investors still have greater influence, as their stock holding has increased and restrictions have been removed. 4.3 Impulse response function analysis In this section, we discuss relations among market returns, currency returns and institutional investors. Then the results will be compared with the VAR results and the Granger causality test to ensure the robustness of the study. The impulse responses in each plot are the coefficients from the former moving average function in Eq. (3). A Monte Carlo integration procedure is used to display the 95% confidence intervals around the impulse response coefficients. From Figure 3, we can see that each variable exhibited strong autocorrelation patterns. In short, the VAR model is appropriate for this study. During the crisis (Figure 3.c), relations between variables were amplified and revealed different, discontinuous movement compared with previous periods (Figures 3.a, 3.b), showing the impact of the crisis shock. First, we check the relation between market returns and net purchases of foreign investors (FI) in three periods. The response of FI to market returns (bottom-left) is affected by market returns from the beginning and the existence of positive feedback trading strategies. The response of market returns to FI (top-right) was suppressed in sub 2, indicating that deregulation did reduce foreign investors’ impact on the stock market. However, as we mentioned before, benefits of deregulation faded in the crisis period; the response of market returns to FI became larger and fluctuated more as Granger causality turned to unidirectional and only FI Granger caused market returns. Second, we examined market returns and currency returns. The response of market returns to currency returns (top-center) decreased in sub 2, and the impact shortened to the 19 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 third day. As the plot shows, it became smoother than in sub 1. But, the impact turned more volatile in sub 3. The response of currency returns to market returns (middle-left) increased only in the first day yet became smoother in sub 2, compared with sub 1. However, the response of currency returns to market returns also fluctuated more and became discontinuous during the crisis. Both of the results showed that the relationship between market returns and currency returns became volatile in crisis and are consistent with the bidirectional causality in the Granger causality test. Currency returns and net purchases of foreign investors were checked last. The response of FI to currency returns (bottom-center) gradually grew larger over time, especially in crisis-time, as currency returns Granger caused FI in sub 3. The response of currency returns to FI (middle-tight) had become larger since deregulation, as FI Granger caused currency returns and began to be fluctuated more in sub 3. For domestic institutions, net purchases of investment trusts (IT) and net purchases of securities dealers (SD) were put into one figure and plotted for three periods as Figures 4.a, 4.b, and 4.c. We did so because of the similar scope of the two sectors and because doing so made it easier to compare the differences between them. The response of IT to market returns (bottom-left) exhibited negative feedback trading strategies for IT; the coefficients went below 0 in two days and stayed negative for several days. The response of SD to market returns (bottom-left) had reached its peak in sub 2 (Figure 4.b), only became feedback traders supported SD in this period. We found that the magnitude of the response of market returns to IT (top left) had decreased after deregulation, as for SD. Though their magnitude to market returns increased in the crisis (Figure 4.c), the impact was smaller than in sub 1. The response of IT to currency returns (bottom-left) showed negative coefficients, just as we found with VAR that IT tended to sell stock when the exchange rate rose. The response of SD to currency returns, however, presented different patterns. The coefficients were larger than IT’s and changed through time. The magnitude was around zero in sub 1, became positive in sub 2, and went negative in sub 3. This result supports the claim that SD were Granger caused by currency returns in sub 2, as in the VAR results. The response of currency returns to IT and SD (top-right) showed little impact in sub 3 (Figure 4.c), also similar to the VAR results. To summarize the results of the impulse response analysis, the elimination of the QFII system reduced not only foreign investors’ but also domestic institutions’ influence on the stock market. Yet, it also increased the influence of the currency market, especially when Taiwan was hit by a crisis. Foreign investors had a greater impact than locals, but were not that powerful compared with their scope. Most of the results of the impulse response analysis are consistent with the VAR model, suggesting that the results of this study are 20 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 robust. 21 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Table 5.a QFII (2000/01/04~2003/10/01) Foreign Investors Investment Trusts Market TWD/$ Net Market TWD/$ Net Market TWD/$ Net return return purchase return return purchase return return purchase Market -1 0.0143 return -2 -0.0084 0.0070 ** 3.5562 *** 0.0126 0.0092 ** 1.2439 *** -0.0182 0.0084 ** 0.1757 0.0020 0.1386 0.0179 0.0066 * -1.5846 *** -0.0028 0.0067 * -0.1566 0.1196 *** 0.0050 -0.6843 *** -0.6763 *** -3 0.0519 * 0.0012 0.3975 -4 -0.0657 ** -0.0037 -0.7841 * -0.0431 -0.0020 TWD/$ -1 0.1793 0.0194 -5.6372 0.2532 0.0262 return -2 0.0505 0.0409 4.6297 0.0565 -3 0.2383 -0.0032 -2.3405 0.2026 -4 0.4355 * 0.0565 ** 1.1553 0.4344 * 0.0551 ** Net -1 0.0065 *** 0.0004 * 0.3800 *** 0.0132 ** 0.0002 purchase -2 0.0021 0.0003 0.1173 *** -0.0014 -0.0003 -3 -0.0033 0.0000 -0.0140 *** -0.0000 -4 0.0004 -0.0001 0.0947 *** 0.0054 -0.0961 * -0.0144 ** 4.3273 *** 0.0287 0.0295 Constant Adj. R-square Securities Dealers -0.0225 0.3260 0.0822 ** -0.0007 -0.0471 -0.0645 * -0.0044 -0.0484 -0.6926 0.2614 0.0271 1.2959 0.0424 1.1745 0.0438 0.0414 1.0790 -0.0022 -0.4433 0.2125 0.0008 -1.4668 -0.8050 0.4307 * 0.0577 ** -0.0715 0.2623 *** 0.0267 *** 0.0005 0.0984 *** 0.0030 -0.0008 0.0266 -0.0427 -0.0132 * 0.0021 -0.0357 -0.0003 0.0175 0.0066 -0.0002 0.0183 -0.0340 -0.0078 -0.2468 -0.0292 -0.0073 -0.2821 0.0266 0.0232 0.2019 0.0273 0.0268 0.2130 6.0309 1.9522 0.4349 *** Granger causality tests (Chi-sq) Market return 4.3096 TWD/$ return 3.6549 Net purchase 11.6588 ** 47.4261 *** 3.0221 6.6525 8.8498 ** 3.8571 89.0449 *** 0.6885 9.6217 ** 0.5967 *** = 1 % significance level; ** = 5 % significance level; * = 10 % significance level. 22 3.7996 10.2849 ** 2.9458 4.0444 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Table 5.b QFII eliminated (2003/10/02~2007/07/18) Foreign Investors TWD/$ Net Market TWD/$ Net Market TWD/$ Net return return purchase return return purchase return return purchase -1 -0.0264 return -2 -0.1051 *** 0.0533 0.0001 15.1911 *** -0.0069 1.9243 -0.0040 5.5761 ** -0.0156 0.0112 * -0.0970 *** 0.0780 ** -4 -0.0955 *** -0.0132 * -2.3418 TWD/$ -1 0.3777 *** 0.0300 7.7828 return -2 0.1070 -0.0159 -1.6031 0.1290 -3 -0.0492 -0.0012 1.7061 -4 -0.0415 0.0232 -0.5879 Net -1 purchase -2 Securities Dealers Market Market -3 Investment Trusts 0.0017 *** 0.0004 *** 0.2142 *** -0.0002 0.0001 0.1037 *** -3 -0.0001 0.0001 -4 0.0000 Constant Adj. R-square -0.0585 * 0.4496 *** 1.8671 *** -0.0107 0.0196 ** 0.0082 -2.7302 *** -0.0755 * 0.0174 * 0.0074 -1.1261 *** -0.0009 -1.1512 *** -0.0831 ** 0.0085 -0.0015 0.0516 * -0.5593 1.0480 ** -0.4902 -0.3479 0.4342 *** -0.0065 -0.0712 0.1065 -0.0054 -0.0324 0.0057 1.4687 -0.0592 0.0121 -0.3222 -0.0308 0.0324 -1.0286 -0.0195 0.0402 -1.0374 0.0088 ** 0.0525 ** 0.1202 *** 2.1265 *** 3.3925 ** 4.3148 *** 0.0000 0.3728 *** 0.0031 -0.0010 0.2162 *** -0.0016 -0.0009 0.1276 *** -0.0013 -0.0010 0.0434 0.0902 *** -0.0002 0.0000 0.1299 *** -0.0062 * 0.0001 -0.0492 0.0001 0.0516 * -0.0044 -0.0009 0.0544 ** 0.0031 -0.0001 0.0018 0.0287 -0.0110 * 10.2701 *** 0.0218 0.0180 0.2197 3.1426 44.7707 *** 0.0576 ** 0.0287 -0.0008 -0.1610 0.0531 * 0.0011 0.1138 0.0125 0.3628 0.0150 -0.0001 0.1471 3.1311 173.4744 *** Granger causality tests (Chi-sq) Market return TWD/$ return 6.5057 Net purchase 9.4411 ** 0.6475 20.0294 *** 9.2759 ** 4.0268 2.4499 2.7562 *** = 1 % significance level; ** = 5 % significance level; * = 10 % significance level. 23 5.0373 8.5292 * 3.0706 19.1121 *** 9.4145 ** 2.9291 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Table 5.c In the crisis (2007/07/19~2009/12/31) Foreign Investors Investment Trusts Market TWD/$ Net Market TWD/$ Net Market TWD/$ Net return return purchase return return purchase return return purchase Market -1 return -2 0.0692 * -3 -0.1083 ** -0.0038 -0.4330 -0.0629 -0.0033 -4 -0.0683 * -0.0037 -1.0219 -0.0518 -0.0269 TWD/$ -1 0.8985 *** return -2 0.3722 -3 -0.315 -4 0.451 * Net -1 0.0010 purchase -2 -0.0021 ** -3 -4 Constant Adj. R-square Securities Dealers 0.0032 *** -0.0191 *** 3.5025 * -0.0104 -0.0126 ** 1.5992 *** -0.0367 -0.0138 ** 0.2779 0.0119 * 4.5356 ** 0.0176 0.0100 * -1.4606 *** 0.0465 0.0143 ** -0.4405 * -1.2806 *** -0.1008 ** 0.0010 -0.3070 -0.0356 0.2301 *** -0.1739 0.9966 *** 0.2184 *** -0.0061 -0.1730 0.0014 0.2208 0.2382 *** 0.1314 21.6633 * 0.9260 *** -0.0068 -5.0908 0.3439 -0.0063 -0.6050 0.3084 -0.0069 1.1425 -0.0529 -31.8805 ** -0.1620 -0.0468 -0.5888 -0.0931 -0.0410 -0.2468 0.0185 29.5232 ** 0.4500 ** 0.0172 1.4738 0.4289 * 0.0150 -1.2500 0.0008 0.0006 0.2470 0.0090 0.0008 0.0029 0.0013 0.2317 *** -0.0091 -0.0004 0.0076 0.0003 0.0603 * 0.0003 ** -0.0001 0.0001 0.3483 *** -0.0137 0.0914 ** 0.0183 ** 0.0017 * 0.2282 *** 0.0779 * 0.1099 ** -0.0007 0.0000 -0.0273 -0.0077 -0.0004 0.0745 ** -0.0109 * -0.0010 -0.0799 * -0.0298 0.0044 -2.6192 -0.0423 -0.0004 0.6101 * -0.0426 0.0021 0.5817 * 0.0293 0.0421 0.1874 0.0150 0.0397 0.2770 0.0228 0.0390 0.0717 8.7956 * 5.1293 5.8018 85.0797 *** 6.8182 3.1567 Granger causality tests (Chi-sq) Market return TWD/$ return 14.6874 *** Net purchase 11.0673 ** 9.8266 ** 4.3822 14.6900 *** 2.2310 *** = 1 % significance level; ** = 5 % significance level; * = 10 % significance level. 24 0.9764 2.8486 15.4486 *** 6.9999 0.9865 2.4556 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Figure 3.a Sub 1, QFII Response of MARKET to FI Response of MARKET to CURRENCY Response of MARKET to MARKET 1.5 1.5 1.5 1.0 1.0 1.0 0.5 0.5 0.5 0.0 0.0 0.0 -0.5 -0.5 -0.5 2 4 6 8 10 12 2 14 Response of CURRENCY to MARKET 4 6 8 10 12 2 14 Response of CURRENCY to CURRENCY .25 .25 .20 .20 .20 .15 .15 .15 .10 .10 .10 .05 .05 .05 .00 .00 .00 -.05 2 4 6 8 10 12 14 Response of FI to MARKET 4 6 8 10 12 14 2 60 60 60 40 40 40 20 20 20 0 0 0 -20 6 8 10 12 14 10 12 14 6 8 10 12 14 12 14 Response of FI to FI 80 4 4 Response of FI to CURRENCY 80 2 8 -.05 2 80 -20 6 Response of CURRENCY to FI .25 -.05 4 -20 2 4 6 8 10 12 14 2 4 6 8 10 4.4 Variance decomposition analysis Variance decomposition analysis reveals how much of the forecast error variance of one variable can be explained by exogenous shocks to the other variables. In other words, it reveals the amount of information that one variable contributes to the other in a VAR model. Table 6 shows the results of variance decomposition of the three periods in entire sample period. Because there are five trading days per week in Taiwan, we adopted 5 days (1 week), 10 days and 15 days ahead for each variable. On average, 30% of variance for institutional investors can be associated with innovation in the market returns. In detail, the proportion of net purchases of foreign investors by market returns increased gradually and soared to approximately 40% during the crisis (Table 6.c). However, the proportion of net purchases of investment trusts by market returns decreased gradually from 30% to 20%. The proportion of net purchases of securities dealers, showed a distinct track: an inverse 25 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 U-shape. In sub 2, the proportion reached 60%, but it was 30% and 35% in sub 1 and sub 2, respectively. Table 6.a Variance decomposition by N-days ahead forecasts (%). Sub 1, QFII Foreign Investors Market returns TWD/$ returns 5 10 15 5 10 15 Net 5 purchas 10 es 15 Investment Trusts Securities Dealers Market returns 98.33 98.29 98.28 0.39 0.39 0.39 TWD/$ returns 3.76 3.77 3.77 95.35 95.28 95.28 Net purchases 22.75 22.83 22.84 0.36 0.39 0.39 Market returns 98.65 98.62 98.62 0.39 0.40 0.40 TWD/$ returns 4.18 4.20 4.20 95.76 95.7 95.74 Net Purchases 33.26 33.70 33.70 0.11 0.16 0.17 Market returns 98.54 98.53 98.53 0.35 0.36 0.36 TWD/$ returns 4.11 4.13 4.13 95.38 95.35 95.35 Net purchases 38.17 38.16 38.16 0.24 0.24 0.24 1.26 0.88 76.90 0.93 0.045 66.64 1.097 0.50 61.59 1.29 0.93 76.78 0.94 0.054 66.14 1.10 0.51 61.60 1.29 0.93 76.77 0.94 0.054 66.13 1.10 0.51 61.60 Table 6.b Variance decomposition by N-days ahead forecasts (%). Sub 2, QFII eliminated Foreign Investors Investment Trusts Securities Dealers Market returns TWD/$ returns Net purchases Market returns TWD/$ returns Net purchases Market returns TWD/$ returns Net purchases Market 5 98.07 8.71 27.08 98.65 9.48 26.50 98.69 9.49 58.04 returns 10 98.06 8.85 27.20 98.64 9.49 26.17 98.69 9.49 58.07 15 98.06 8.85 27.20 98.64 9.49 26.07 98.69 9.49 58.07 TWD/$ 5 0.90 89.25 1.29 0.96 90.33 0.24 0.90 90.17 1.35 returns 10 0.90 88.97 1.30 0.96 90.21 0.36 0.90 90.17 1.35 15 0.90 88.96 1.30 0.96 90.19 0.370 0.90 90.17 1.35 5 1.02 2.03 71.62 0.37 0.17 73.24 0.39 0.32 40.60 0.32 40.57 Net purchases 10 1.02 2.17 0.38 0.28 73.46 Table 6.c Variance decomposition by71.49 N-days ahead forecasts (%). Sub 3, In the0.40 crisis 15 1.02 2.18 71.49 Foreign Investors 0.38 0.30 73.55 Investment Trusts 0.40 0.32 40.57 Securities Dealers Market returns TWD/$ returns Net purchases Market returns TWD/$ returns Net purchases Market returns TWD/$ returns Net purchases Market 5 95.89 14.39 38.66 97.22 14.40 21.03 96.44 14.19 34.90 returns 10 95.85 14.39 38.59 97.21 14.42 20.72 96.43 14.20 34.90 15 95.85 14.39 38.59 97.21 14.42 20.69 96.43 14.20 34.90 TWD/$ 5 2.35 84.83 2.81 2.40 85.07 0.10 2.48 85.38 1.63 returns 10 2.36 84.80 2.94 2.40 84.99 0.19 2.48 85.37 1.65 15 2.36 84.80 2.94 2.40 84.99 0.20 2.48 85.37 1.65 5 1.75 0.77 58.52 0.36 0.51 78.86 1.07 0.41 63.45 purchases 10 1.78 0.80 58.46 0.38 0.57 79.07 1.07 0.42 63.44 15 1.78 0.80 58.46 0.38 0.57 79.10 1.07 0.42 63.44 Net 26 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Figure 3.b Sub 2, QFII eliminated Response of MARKET to MARKET Response of MARKET to CURRENCY Response of MARKET to FI 1.5 1.5 1.5 1.0 1.0 1.0 0.5 0.5 0.5 0.0 0.0 0.0 -0.5 2 4 6 8 10 12 14 -0.5 -0.5 2 Response of CURRENCY to MARKET 4 6 8 10 12 14 2 Response of CURRENCY to CURRENCY .25 .25 .20 .20 .20 .15 .15 .15 .10 .10 .10 .05 .05 .05 .00 .00 .00 -.05 2 4 6 8 10 12 14 Response of FI to MARKET 4 6 8 10 12 14 2 60 60 60 40 40 40 20 20 20 0 0 0 -20 6 8 10 12 14 10 12 14 6 8 10 12 14 12 14 Response of FI to FI 80 4 4 Response of FI to CURRENCY 80 2 8 -.05 2 80 -20 6 Response of CURRENCY to FI .25 -.05 4 -20 2 4 6 8 10 12 14 2 4 6 8 10 This inverse U-shape track can be explained in the previous VAR analysis, which shows that securities dealers turned into feedback traders in sub 2. On the contrary, all institutional investors’ effects on market returns had shrank in sub 2, but rose again in sub 3, showing that there were benefits of deregulation. The proportions of institutional investors by currency returns also rose following the elimination of the QFII system, especially for foreign investors and securities dealers, with 3-fold and 5-fold increases in sub 2. Moreover, net purchases of foreign investors and currency returns presented a growth-and-decline relation, which was similar to the directional change in Granger 27 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 causality. In the crisis period, the proportion of currency returns by market returns had increased to its peak of 14%. The proportion of market returns by currency returns also increased, doubling compared to sub 2. Figure 3.c Sub 3, In the crisis Response of MARKET to FI Response of MARKET to CURRENCY Response of MARKET to MARKET 1.5 1.5 1.5 1.0 1.0 1.0 0.5 0.5 0.5 0.0 0.0 0.0 -0.5 -0.5 -0.5 2 4 6 8 10 12 2 14 Response of CURRENCY to MARKET 4 6 8 10 12 2 14 Response of CURRENCY to CURRENCY .25 .25 .20 .20 .20 .15 .15 .15 .10 .10 .10 .05 .05 .05 .00 .00 .00 -.05 2 4 6 8 10 12 14 Response of FI to MARKET 4 6 8 10 12 14 2 60 60 60 40 40 40 20 20 20 0 0 0 -20 6 8 10 12 14 10 12 14 6 8 10 12 14 12 14 Response of FI to FI 80 4 4 Response of FI to CURRENCY 80 -20 8 -.05 2 80 2 6 Response of CURRENCY to FI .25 -.05 4 -20 2 4 6 8 10 12 14 2 4 6 8 10 The results of the innovation of market returns on net purchases of foreign investors and currency returns are similar to Karolyi (2002). Karolyi (2002) found that the proportions of net purchases of foreign investors and currency returns by market returns went up in Japan during the Asian crisis. Investment trusts and securities dealers exhibited different patterns in this analysis as well. The results of this analysis coincide with the VAR model and impulse response analysis, indicating the robustness of this study. 28 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Figure 4.a Sub 1, QFII (domestic institutions) Response of MARKET to Cholesky One Standard Deviation Innovations Response of CURRENCY to Cholesky One Standard Deviation Innovations 1.5 .25 .20 1.0 .15 0.5 .10 .05 0.0 .00 -0.5 -.05 2 4 6 8 10 12 14 2 Response of IT to Cholesky One Standard Deviation Innovations 4 6 8 10 12 14 Response of SD to Cholesky One Standard Deviation Innovations 10 10 8 8 6 6 4 4 2 2 0 0 -2 -2 2 4 6 8 10 12 14 2 MARKET IT 29 4 CURRENCY SD 6 8 10 12 14 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Figure 4.b Sub 2, QFII-eliminated (domestic institutions) Response of MARKET to Cholesky One Standard Deviation Innovations Response of CURRENCY to Cholesky One Standard Deviation Innovations 1.5 .25 .20 1.0 .15 0.5 .10 .05 0.0 .00 -0.5 -.05 2 4 6 8 10 12 14 2 Response of IT to Cholesky One Standard Deviation Innovations 4 6 8 10 12 14 Response of SD to Cholesky One Standard Deviation Innovations 10 10 8 8 6 6 4 4 2 2 0 0 -2 -2 2 4 6 8 10 12 14 2 MARKET IT 30 4 CURRENCY SD 6 8 10 12 14 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Figure 4.c Sub 3, In the crisis (domestic institutions) 31 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 Response of MARKET to Cholesky One Standard Deviation Innovations Response of CURRENCY to Cholesky One Standard Deviation Innovations 1.5 .30 .25 1.0 .20 .15 0.5 .10 .05 0.0 .00 -0.5 -.05 2 4 6 8 10 12 14 2 Response of IT to Cholesky One Standard Deviation Innovations 4 6 8 10 12 14 Response of SD to Cholesky One Standard Deviation Innovations 10 10 8 8 6 6 4 4 2 2 0 0 -2 -2 2 4 6 8 10 12 2 14 MARKET IT 4 6 8 10 12 14 CURRENCY SD 5. Conclusion In this study, we investigated market returns, currency returns and net purchases of institutional investors before QFII was eliminated, after QFII was eliminated and in the crisis. We used a VAR model and then impulse response analysis and variance decomposition to ensure robustness. Our hypotheses were tested and stated as follows: (1) Foreign investors do have stabilizing effect on Taiwanese stock market, except during the crisis period. (2) There is no strong evidence to prove that foreign investors destabilized the currency market, but their impact on currency market did increase. (3) Compared with domestic institutions, foreign investors were slightly stronger than 32 Proceedings of 10th Global Business and Social Science Research Conference 23 -24 June 2014, Radisson Blu Hotel, Beijing, China, ISBN: 978-1-922069-55-9 securities dealers and investment trusts on the Taiwanese stock market during the financial tsunami. (4) The role of foreign investors has changed twice after the elimination of the QFII system. One change occurred following deregulation, when the impact on currency market increased; the other change occurred during the financial tsunami, when a destabilizing effect was detected on the stock market. However, we should note that domestic institutions also had the ability to destabilize the stock market before deregulation. Securities dealers even cast a destabilizing effect during the crisis period, similar to foreign investors. The destabilizing effect of foreign investors only became stronger in the crisis. Foreign investors adopted feedback trading strategies until the crisis hit Taiwan, but they still have a greater impact than domestic institutions on the stock market because information contribution exists in entire sample. For all institutional investors, trading behavior did not stand for the potential to destabilize the stock or currency markets. Though foreign investors had demonstrated their destabilizing effect on the stock market during the crisis, we should understand the reason why they came to Taiwan. International capital flows seek profit all around the world; it is their nature to escape from a downturned economy. Moreover, the flows returned after 2009, indicating that the flight was a temporary move. Our findings are similar to Bohn and Tesar (1996) and Hamao and Mei (2001). Foreign investors are not the main factor because we find that domestic institutions such as securities dealers also had a destabilizing effect during the crisis, even with smaller scale of daily trading volume. We thought that the CBC’s exchange rate management diminished the foreign investors’ impact on the currency market, resulting in an increase in international flows, but the data showed a slight influence. We think that once we know the nature of international flows and the ways to deal them with proper financial supervisory mechanisms, international capital flows can have a positive effect on a shallow economy country such as Taiwan. If we do have a good financial environment with a strong economic foundation, the flows are not too difficult to manage. The government has currency policy, money policy, and fiscal policy to protect the economic system from ―hot‖ money. What we should worry about is the rising fiscal deficit, which could swell to cripple the flexibility of these economic balancing policies. The case of Taiwan could provide policy implications to those countries that still impose regulations on foreign capital flows and shed light on an important question: could a small, flat, and export-oriented economy benefit from financial deregulation? 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