Luận văn thạc sĩ: Phân tích spillover giữa thị trường chứng khoán Việt Nam, Singapore và Thái Lan

Nghiên cứu tác động lan tỏa giữa lợi suất và biến động của thị trường chứng khoán Việt Nam, Singapore và Thái Lan qua phân tích GARCH đa biến.

Trường đại học

University

Chuyên ngành

Finance

Người đăng

Ẩn danh

Thể loại

Thesis

2023

77
2
0

Phí lưu trữ

30 Point

Mục lục chi tiết

DECLARARTION

ACKNOWLEDGEMENTS

ABSTRACTS

TABLE OF CONTENTS

1. CHAPTER 1: INTRODUCTION

1.1. The Research Objectives

1.2. The Research Questions

1.3. The Research Contribution

1.4. Structure of the thesis

2. CHAPTER 2: THE STOCK MARKETS IN COMPARISON

2.1. Overview of the restriction on the foreign equity ownership of the stock markets

2.2. Market capitalization, liquidity and the number of net portfolio equity inflows

2.3. Trends of the stock market indices

3. CHAPTER 3: LITERATURE REVIEW

3.1. Theories on the international linkages of equity markets

3.2. Modern portfolio diversification theory

3.3. The logic of volatility transmission between stock markets

3.4. Approaches to research the volatility tranmission

3.5. Relevant empirical studies

4. CHAPTER 4: RESEARCH METHODOLOGY AND DATA COLLECTION

4.1. Testing for stationarity

4.2. The model specification of multivariate GARCH - BEKK

5. CHAPTER 5: DATA ANALYSIS AND RESEARCH FINDINGS

5.1. Summary of descriptive analysis

5.2. Unit root tests

5.3. Stationary tests for series of stock price indices

5.4. Stationary tests for series of stock returns

5.5. The linkages between the equity markets

5.5.1. The conditional return linkage analysis

5.5.2. The conditional variance – covariance matrices analysis

5.5.3. Trends in stock volatility and conditional correlation analysis

5.5.4. The conditional variance-covariance estimated by BEKK specification

5.5.5. The conditional correlations estimated by BEKK specification

5.5.6. Application of the estimated volatility for Optimal Portfolio Selection

6. CHAPTER 6: CONCLUSIONS AND POLICY IMPLICATION

6.1. Summary of the study and conclusions

6.2. Implications for policy and investment

6.3. Limitation and further reseach

LIST OF TABLES

LIST OF FIGURES

LIST OF ABBREVIATIONS

Trích đoạn nội dung tài liệu

DECLARARTION With exception of due references specifically specified in the text and such helps clearly acknowledged in the thesis, I hereby declare that this thesis is my own work and has not been previously submitted for any other degree or diploma to any other University or Institution. …………………………………………… VO THI NGOC TRINH i TIEU LUAN MOI download : skknchat@gmail.com ACKNOWLEDGEMENTS Firstly, I am very much grateful to my supervisor, Dr. Duong Nhu Hung, for the motivational and professional supervision. It is impossible for me to complete the work without your support, instruction, and patience all the time. Thank you very much for your invaluable helps. I extend my deep gratitude to Professor Nguyen Trong Hoai, Mr. Phung Thanh Binh, the entire lecturers and administrative staffs for academic guidance, tutorials and other supports. I am also very thankful to my friends and fellow master students for fun-filled moments we had together. Last but not least, I would like to thank you my family, especially to my dearest mother, my husband, and my children for the moral support and patience. ii TIEU LUAN MOI download : skknchat@gmail.com ABSTRACTS In this study, we examine the own- and cross-effects of the return and volatility spillover between the equity markets of Vietnam and the two ASEAN countries, namely, Singapore and Thailand using monthly stock returns. In attempt to explore the level and magnitude of the spillover effects of the other markets on the Vietnamese stock market, we apply the multivariate generalized autoregressive conditional heteroskedasticity (MGARCH) framework. By utilizing the time-varying conditional volatility and conditional correlations between the stock markets which are resulted from estimation of the GARCH-BEKK model, the study also further shed light on the issues of portfolio diversification. In general, the study found the weak return linkages among the markets. Specifically, the study found no return linkages between Vietnam and Thailand and the unidirectional relationship between Vietnam and Singapore. However, the volatility linkages are highly significant for the three stock markets. It is found that the shock transmission relationship between emerging markets (i. Vietnam, Thailand) and developed market (i. Singapore) is unidirectional in direction to the emerging markets and the volatility transmission relationships between those are bidirectional. Besides, the variation in Vietnamese stock volatility is found to be more strongly influenced by the past own-shock effects than the past cross-shock effects. This indicates the low level of financial integration of Vietnam into the regional markets and implies the potential rooms for the international portfolio diversification gains. The findings on the return and volatility linkages have several important implications for both investors and policy makers. Firstly, because of the low correlations between the stock markets found, the investors can earn the gains from the portfolio diversification in the three markets. Secondly, the Vietnamese policy makers should be concerned with the harmful volatility spillover originating in the Thailand market that can affect the stability of the stock market. Thirdly, the implication is related to the monetary policy. The finding that the own shock transmissions have the strongest impact on the Vietnamese market’s volatility suggest that the policy makers should pay more attention to the domestic shocks so that the adequate and timely policy can be made. Key words: Stock Return, Volatility Spillovers, Vietnam, Singapore, Thailand, Multivariate GARCH. iii TIEU LUAN MOI download : skknchat@gmail.com TABLE OF CONTENTS Declaration . iii Table of Contents . iv List of Tables . v List of Figures . vi List of Abbreviations .vii CHAPTER 1 - INTRODUCTION . The Research Objectives. The Research Questions . The Research Contribution . Structure of the thesis. 6 CHAPTER 2 - THE STOCK MARKETS IN COMPARISON . Overview of the restriction on the foreign equity ownership of the stock markets . Market capitalization, liquidity and the number of net portfolio equity inflows . Trends of the stock market indices . 12 CHAPTER 3 - LITERATURE REVIEW . Theories on the international linkages of equity markets . 13 Modern portfolio diversification theory. 13 The logic of volatility transmission between stock markets . Approaches to research the volatility tranmission . Relevant empirical studies . 20 CHAPTER 4 - RESEARCH METHODOLOGY AND DATA COLLECTION . Testing for stationarity . The model specification of multivariate GARCH - BEKK . 31 CHAPTER 5 - DATA ANALYSIS AND RESEARCH FINDINGS . Summary of descriptive analysis . 33 iv TIEU LUAN MOI download : skknchat@gmail. Unit root tests . 36 Stationary tests for series of stock price indices . 36 Stationary tests for series of stock returns . The linkages between the equity markets . 38 The conditional return linkage analysis . 38 The conditional variance – covariance matrices analysis . Trends in stock volatility and conditional correlation analysis . 45 The conditional variance-covariance estimated by BEKK specification . 45 The conditional correlations estimated by BEKK specification . Application of the estimated volatility for Optimal Portfolio Selection . 49 CHAPTER 6 - CONCLUSIONS AND POLICY IMPLICATION . Summary of the study and conclusions . Implications for policy and investment. Limitation and further reseach . 69 v TIEU LUAN MOI download : skknchat@gmail.com LIST OF TABLES TEXT TABLES Table 5.1 – Descriptive Statistics of stock return series .2 – Psir-wise Correlations for Returns .3 – Unit Root Test Results for stock index series .4 – Unit Root Test Results for return series .5 – Conditional Mean Equations Estimates .6 – Own- and cross-market ARCH effects .7 – Own- and cross-market GARCH effects .8 – Optimal Portfolio Weights . 48 APPENDIX TABLES Table A1 – Estimated Coefficients for Trivariate GARCH-BEKK (original data). 63 Table A2 – Estimated Coefficients for Trivariate GARCH-BEKK (deseasonalized data) . 64 LIST OF FIGURES TEXT FIGURES Figure 2.1 – Market capitalization of the three stock markets in US$ billion .2 – Turnover ratio of the three stock markets in percentage .3 – Net portfolio equity inflows of the three stock markets .4 – Trends of the stock market indices over years .1 – Monthly stock returns over time .2 – The average stock return by calendar month .3 – The conditional variance of monthly returns of the three indices .4 – The pair-wise conditional correlations for stock returns . 47 APPENDIX FIGURES Figure B1 – The conditional variance – covariance estimated by BEKK models. 65 vi TIEU LUAN MOI download : skknchat@gmail.com LIST OF ABBREVIATIONS ACF: Autocorrelation Function ADF: Augmented Dickey-Fuller APEC: Asia-Pacific Economic Cooperation ARCH: Autoregressive Conditional Heteroskedasticity ASEAN: Association of Southeast Asian Nations BEKK: Baba, Engle, Kraft and Kroner BFGS: Broyden-Fletcher-Goldfarb-Shanno method CCC: Constant Conditional Correlation DAX: Deutscher Aktien indeX DCC: Dynamic Conditional Correlation ECM: Error Corrected Model EGARCH: Exponential Generalized Autoregressive Conditional Heteroskedasticity FTSE: Financial Times Stock Exchange Index GARCH: Generalized Autoregressive Conditional Heteroskedasticity GDP: Gross Domestic Product GJR-GARCH: The Glosten-Jagannathan-Runkle GARCH ISEQ: Irish Stock Exchange Overall Index LM: Lagrange Multiplier MGARCH: Multivariate GARCH OLS: Ordinary least squares PARCH: Power Autoregressive Conditional Heteroskedasticity PP: Phillips-Perron RSET: Returns of SET index RSGE: Returns of SGE index RVNI: Returns of VN index vii TIEU LUAN MOI download : skknchat@gmail.com SEATS: Signal Extraction in ARIMA Time Series SET: Stock Exchange of Thailand SGE: Singapore Stock Exchange TRAMO: Time series Regression with ARIMA noise, Missing observations, and Outliers U.: the United Kingdom U.: the United States of America VAR: Vector Auto-Regression VNI: VN Index WTO: World Trade Organization viii TIEU LUAN MOI download : skknchat@gmail.com CHAPTER 1 INTRODUCTION 1.Problem Statement Global economic integration interworked with technological innovation and financial liberalization has led to increased international capital flows and facilitates the trading in international securities on different national markets. Associated with the growing trend of integration in financial markets, the stock markets around the world have become more interlinked and interdependent over time. Understanding the interrelationship between financial markets and knowing how the volatility is transmitted between cross stock markets becomes very crucial for investors, market analysts and policy makers over the years. Firstly, it could be helpful to investors in formulating the optimal portfolio diversification. For instance, low extent of correlation between returns of different national stock markets offers the opportunities to investors in diversifying their wealth across national markets to receive maximum returns at the lowest risk. In addition, investors desire to improve the returns by investing in international securities which are expected to have higher rates of returns. Secondly, understanding the market behaviors assists policy makers in issuing relevant financial regulation or effective monetary policies. According to Corsetti et al. (2005), as knowing how shocks of foreign financial markets transmit to the domestic market, the policy makers would have appropriate adjustments in regulation and adequately supervision of financial market, which help to maintain the stability of the overall financial systems. Acknowledgement of that importance, studies on the correlation and volatility transmission between different national markets have been growing in financial literature over years. The early studies were conducted in the 1970 decade such as Levy and Sarnat (1970), Grubel and Fadner (1971), Lessard (1973), and Solnik (1974). These studies mainly focus on the determinants of international diversification benefits and find the common result that the international financial markets are less interlinked. More recent studies (e. Kasa, 1992; Karolyi, 1995; Kearney and Patton, 2000; Elyasiani and Mansur, 2003; and Choudhry, 2004), however, find the unidirectional and bidirectional relationship of return and volatility between the different national markets. The general findings also reveal that in addition to high correlation between these markets, the financial market interdependency has increased after the stock exchange crash in 1987. Nevertheless, these studies almost pay 1 TIEU LUAN MOI download : skknchat@gmail.com attention to the relationship among the developed stock markets as the common feature. Since the financial crisis in late 1990s, studies for emerging financial markets began to increase. Perhaps due to severe consequences of the crisis, most of studies have been focused on the impact of volatility transmission among emerging markets during financial turmoil and calm period. The findings of these studies, however, were diverged and depended on difference in the research methodologies. Studies on the financial integration of Asian equity markets have diversified in two directions. One direction of the studies is on the influence of the advanced markets (such as the U.S and Japan) on the Asian stock markets (Liu and Pan, 1997; Xu and Fung, 2002; and Li and Rose, 2008). It is consistently found that the Asian equity markets are strongly influenced by the developed stock markets in terms of return and volatility transmission. Another direction of the studies is on the intra-regional interaction and shock transmission among the Asian stock markets (In et al., 2001; Jang and Sul, 2002; Worthington and Higgs, 2004; Gunasinghe, 2005; and Hashmi and Tay, 2007). Jang and Sul (2002) studied the change in level of correlation between Asian stock markets during the period of Asian Financial Crisis and found that the correlation among these markets increase during the crisis time. Hashmi and Tai (2007) found supportive evidence of the financial market interrelationship between Asian markets including Korea, Thailand, Singapore, Taiwan, Malaysia and China. Furthermore, these studies have established the dominant role of the developed Asian stock markets including Japan, Hongkong and Singapore as largest investment centers in Asia with large extent of influence and volatility transmission. Still, other Asian markets such as Indonesia, Korea, Malaysia, the Philippines, Taiwan and Thailand are classified as emerging markets. It is the common belief that the deregulation and liberalization in financial markets in Association of Southeast Asian Nations (ASEAN) region since the latter 1980s have brought the significant development in the regional economies. With competitive rate of returns and the high output growth rate, the ASEAN stock markets have become an attractive source of investment opportunity for foreign investors, hence attracted the large flow of international portfolio investment. As a latest member of ASEAN in 1995, the Vietnamese stock market is likely the youngest market among the six ASEAN stock markets (namely, Singapore, Indonesia, Malaysia, the Philippines, Thailand and Vietnam). Since established in July 2000, Vietnamese stock market has quickly become a vital channel of the financial system in 2 TIEU LUAN MOI download : skknchat@gmail.

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