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Corporate Diversification And Stock Risk In Thailand: Evidence From A Global Shock, Miaoqi Su
Corporate Diversification And Stock Risk In Thailand: Evidence From A Global Shock, Miaoqi Su
Chulalongkorn University Theses and Dissertations (Chula ETD)
The objective of this paper is to investigate the impact of corporate diversification on stock risk for 345 companies listed on Stock Exchange of Thailand during the sample period from 4 January 2017 to 30 December 2021 which covers both Covid and pre-Covid period. Furthermore, the differences in effect between Covid and pre-Covid period are also studied. The result shows that diversifying through only business segments and ignoring global diversification increases stock volatility. Furthermore, it also shows that diversifying through only business segments and ignoring global diversification increases stock volatility during the Covid period compared to pre-Covid period. The result …
Flow-Performance Relationship In Defi Yield Aggregator, Apisara Pornprasith
Flow-Performance Relationship In Defi Yield Aggregator, Apisara Pornprasith
Chulalongkorn University Theses and Dissertations (Chula ETD)
Decentralized Finance (DeFi) is a new financial infrastructure with applications similar to traditional financial products, such as exchange, lending, derivatives, and asset management. This paper empirically investigates Yearn finance, one of the fastest-growing and largest in DeFi yield aggregator protocols for on-chain asset management, to demonstrate the flow-performance relationship and compare it with mutual funds in traditional finance. According to the findings, there is a positive non-linear relationship between fund flows and recent performance for using stablecoin deposited. In contrast, we cannot find this relationship for using cryptocurrency. Then, we look further into stablecoin holder behaviour and our findings show …
Investor’S Sentiment And Stock Return: An Empirical Study On The Thai Stock Market, Chang Chen
Investor’S Sentiment And Stock Return: An Empirical Study On The Thai Stock Market, Chang Chen
Chulalongkorn University Theses and Dissertations (Chula ETD)
The effect of investor sentiment on stock returns is one of the most recent developments in finance. The empirical literature includes developed stock markets. However, emerging markets, notably the Thai stock market, lack study subjects. The purpose is to deeply comprehend the link between investor sentiment and Thai stock market return. The aims include customizing investor sentiment indices to explain the Thai stock market index's movement, estimating investor sentiment's predictive ability, providing stock investors with referable trading strategies, and providing suggestions for cross-section equity selection. This study initially employs Principal Component Analysis (PCA) to customize the composite indices, called the …
The Analysis Of Enhanced Momentum Strategies In The Stock Exchange Of Thailand, Chayakon Kamolsawat
The Analysis Of Enhanced Momentum Strategies In The Stock Exchange Of Thailand, Chayakon Kamolsawat
Chulalongkorn University Theses and Dissertations (Chula ETD)
The purpose of this study is to investigate the effectiveness of momentum strategies in investment portfolios, a well-known anomaly in the efficient market hypothesis, by portfolio are constructed by long winners and short losers. Specifically, the study focuses on the use of volatility to enhance momentum strategies in the Stock Exchange of Thailand from January 2013 to December 2022. The enhanced momentum strategies under investigation vary the portfolio weight with volatility and can be classified into constant volatility-scaled, constant semi-volatility-scaled, and dynamic-scaled approaches. The research aims to achieve two main objectives. Firstly, to analyze the potential of the enhanced momentum …
The Impact Of Government Response To Covid-19 On Stock Return Predictability, Disayadej Dangdej
The Impact Of Government Response To Covid-19 On Stock Return Predictability, Disayadej Dangdej
Chulalongkorn University Theses and Dissertations (Chula ETD)
Recession is known to cause an increase in stock return predictability. The COVID-19 pandemics had not only resulted in sickness and loss of life but also plunged global economy into recession prompting governments to come up with measures to combat the disease. This paper first confirms that return predictability increased due the spread of COVID-19 using data from 41 countries on variations of popular predictors. Furthermore, it shows that government responses to COVID-19 alleviated the pandemic, the recession and reduced the return predictability with varying impact for different government measures. However, cases and deaths from COVID-19 which should have intensified …
Application Of Fractional Exponential Feature To Garch Model Variants For Improvement In Value-At-Risk Prediction, Chanet Saisatian
Application Of Fractional Exponential Feature To Garch Model Variants For Improvement In Value-At-Risk Prediction, Chanet Saisatian
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research studies about using GARCH model variants as a parametric way in estimation and prediction of daily Value-at-Risk (VaR), one of famous risk measurement especially in financial world. To cope with various stylized facts on market’s volatility, two mixed GARCH models are proposed in this research: HY-GJR-GARCH model, the hybrid between hyperbolic GARCH (HYGARCH) and GJR-GARCH models, and HY-MS-GARCH model as the amalgam between HYGARCH and Markov switching GARCH (MSGARCH) models. These mixed models, along with rich mathematical formulations and benefits from their base models, are expected that their performance in predicting daily VaR is advanced against the performance …
Why Is The Third Principal Component Of The Yield Curve Important: A Point Of View From Reverse Stress Test On Credit Portfolio, Phanuwat Ritpornnarong
Why Is The Third Principal Component Of The Yield Curve Important: A Point Of View From Reverse Stress Test On Credit Portfolio, Phanuwat Ritpornnarong
Chulalongkorn University Theses and Dissertations (Chula ETD)
The focus of this study is to analyze the shape of the yield curve on credit portfolios during crises, specifically those that are exposed to both interest rate and credit risks. To achieve this, We utilized a reverse stress test (RST) and macroeconomic measures (such as GDP and U.S risk-free yields) from the period of 1981 to 2014 to estimate mathematical models. We then utilized a Monte Carlo simulation to determine the most likely scenario for the measures if the portfolio value reaches a pre-specified threshold. The researchers discovered that the shape of the stressed yield curves varied depending on …
Accrual-Based Earnings Management And Real Earnings Management Around Two Key Corporate Governance Regulatory Regime Changes In Thailand, Noor Nayeem Hasnat Farhan
Accrual-Based Earnings Management And Real Earnings Management Around Two Key Corporate Governance Regulatory Regime Changes In Thailand, Noor Nayeem Hasnat Farhan
Chulalongkorn University Theses and Dissertations (Chula ETD)
Two major corporate governance-related regulatory changes, one in 1999 and one in 2008, were implemented as a means to increase the independence of boards of directors of public companies in Thailand. I study whether each of these regulatory changes affects the degree of and leads to substitution of accrual-based earnings management (AEM) and real earnings management (REM), plus the effect of family ownership on the type and degree of earning management. The outcomes of the two regulatory changes are different with respect to earnings management. Univariate tests suggest no change in the levels of AEM and REM for the 1999 …
The Effect Of Sustainability Index Inclusion On Equity Fund Allocation Evidence From Thailand, Tanakorn Makarabhiromya
The Effect Of Sustainability Index Inclusion On Equity Fund Allocation Evidence From Thailand, Tanakorn Makarabhiromya
Chulalongkorn University Theses and Dissertations (Chula ETD)
The concept of sustainability index has been accepted widely in the global investment context. However, sustainable investments are relatively underexplored in an emerging market as in Thailand. This study analyzes the relationship between corporate sustainability performance (proxy by announcement events of the Stock Exchange of Thailand Sustainability Index SETTHSI) and institutional investors’ awareness toward sustainability investment. An event studies on index announcement are applied to analyze the short-term effect from investors in stock market. The results indicate that there is only weak evidence that inclusion into the sustainability index has a positive impact to cumulative abnormal returns during release-related period, …
A Pair Trading Using Reinforcement Learning And Wavelet Decomposition, Panudate Nithinon
A Pair Trading Using Reinforcement Learning And Wavelet Decomposition, Panudate Nithinon
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this study, we propose a trading optimization methodology for the pair trading strategy. The Johansen cointegration test and the correlation measure are used for pair selection. We apply Deep-Q-network (DQN) technique in which the trainable reinforcement learning agent is designed to directly control the trading positions. The maximum overlap discrete wavelet transformation (MODWT) algorithm is used for generating the trading signal from the spread time series. Wavelet signal preprocessing is used to extract the original time series into cyclic time series components and long-term behavior components. Based on the in-sample performance this trading model successfully solves a profit maximizing …
Forecasting Stock Volatility With Neural Network On Time Varying Transition Probability, Wasit Norakarntiansin
Forecasting Stock Volatility With Neural Network On Time Varying Transition Probability, Wasit Norakarntiansin
Chulalongkorn University Theses and Dissertations (Chula ETD)
Forecasting volatilities of financial security returns are important for many financial applications e.g., portfolio investment construction, risk management and trading strategy. The GARCH model has long been refined to capture the true dynamic of volatility on a security return. By applying the Markov switching to the GARCH model, the source of the temporary high volatility and high persistence of a shock to the volatility can be captured. In this study, we refine the Markov switching GARCH model further by applying the notion of the neural network to approximate the time varying transition probabilities. We aim to achieve a model that …
Halloween Effect And Equity Mutual Funds In Thailand, Tunyaporn Wiriyadee
Halloween Effect And Equity Mutual Funds In Thailand, Tunyaporn Wiriyadee
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper investigates one of the most famous seasonal anomalies, namely Halloween effect. It is based on the observation that return during November to April so-called winter period tend to perform better than return during May to October so-called summer period. Using a sample of 97 Thailand equity funds during 2012-2021, we extend previous research by focusing on the Halloween effect in mutual funds market. Our research consists of three main objectives. First, we investigate the existence of Halloween effect in Thailand equity mutual funds. Second, we look into different characteristics of funds by categorizing based on categories from Morningstar …
Is Cryptocurrency A Hedge, Safe Haven, Diversifier Against Thailand, Indonesia, Philippine Stock Market On Pre-Covid-19 And During Covid-19?, Suphawit Keakultanes
Is Cryptocurrency A Hedge, Safe Haven, Diversifier Against Thailand, Indonesia, Philippine Stock Market On Pre-Covid-19 And During Covid-19?, Suphawit Keakultanes
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research study whether cryptocurrencies act as a hedge, safe haven or diversifier against Thailand, Philippines, and Indonesia stock exchange market. Using DCC-GARCH model and hypothesis test, we examine the hedge ratio and the conditional correlation between cryptocurrencies and TIP’s stock exchange market. The sample cover data on the return of the TIP’s index, Bitcoin, Ethereum, Tether and Litecoin from 1st January 2016 to 31st December 2021. The empirical results show that traditional cryptocurrencies, such as Bitcoin and Litecoin can act as diversifier, Ethereum can act as hedge instrument in PSEI index. Tether can act as the hedge and safe …
The Monetary Policy Transmission During The Crisis: Evidence From Thailand, Duangporn Lertsomphol
The Monetary Policy Transmission During The Crisis: Evidence From Thailand, Duangporn Lertsomphol
Chulalongkorn University Theses and Dissertations (Chula ETD)
The interest rate pass-through is defined as the process by which changes in policy or money market rate are transmitted to commercial bank rates. In other words, monetary policy transmission is one of the useful tools for the analysis of effective monetary policy decisions. This paper examines the effectiveness of the interest rate passthrough from the money market rate to various lending rates (MLR, MOR, and MRR) in Thailand from 2008 to 2021 including crisis periods, and also assesses the impact of bank characteristics. Using the panel cointegration method and error correction model with monthly data from individual commercial banks. …
Effect Of Dividend On Derivative Warrants : Evidence From Stock Exchange Of Thailand, Nakarin Chanachaivorakorn
Effect Of Dividend On Derivative Warrants : Evidence From Stock Exchange Of Thailand, Nakarin Chanachaivorakorn
Chulalongkorn University Theses and Dissertations (Chula ETD)
The purpose of this paper is to investigate mispricing of derivative warrants on ex-dividend date. Using data from the Stock Exchange of Thailand during 2010 to 2020, this research examines mispricing of derivative warrants by comparing the market price to the theoretical price, which incorporates the adjustment of exercise price and ratio on ex-dividend date according to the rules given by SET. This research also studies further by investigating the magnitude of impact from the dividend yield of underlying asset. The empirical results show strong evidence of mispricing in call derivative warrants, whereas put derivative warrants are found to be …
The Link Between Esg And Firm Performance In Healthcare Industry: The Moderating Role Of Firm Age And People Awareness, Thongpattra Nanna
The Link Between Esg And Firm Performance In Healthcare Industry: The Moderating Role Of Firm Age And People Awareness, Thongpattra Nanna
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper examines the link between ESG and firm performance in healthcare industry moderated by firm age and advertising expenses from 2011 to 2020. Firm performance is measured by Tobin’s Q, ROA, ROE and asset turnover. This study finds the evidence that environmental pillar is the most important metric to improve firm value in healthcare equipment & supplies and advertisement helps social and governance pillars to add more value. Biotechnology looks alike, but firm age can moderate environment pillar to increase the value. Moreover, social pillar is the most influential to add firm value for healthcare provider & services and …
Are Short Sellers Equally Informed? Evidence From The Us. Credit Rating Announcements, Omtong Kasemsant
Are Short Sellers Equally Informed? Evidence From The Us. Credit Rating Announcements, Omtong Kasemsant
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study uses credit rating and daily short sale data of firms listed in NYSE from January 2015 to December 2021 to examine whether there is informed trading. Although post-announcement abnormal return is negatively correlated with abnormal short volume, no evidence of informed short selling is found. Higher level of pre-announcement abnormal short selling is positively correlated to default risk and also explained by the incentives of short sellers to short more when past returns are negative. Furthermore, increase in short selling that is preceded by credit watch placement is more pronounced before credit rating downgrades. Moreover, the evidence shows …
Do Covid-19 Cases And Government Response To Covid-19 Drive Mispricing In Cross-Listed Companies?, Chomtarn Junanukul
Do Covid-19 Cases And Government Response To Covid-19 Drive Mispricing In Cross-Listed Companies?, Chomtarn Junanukul
Chulalongkorn University Theses and Dissertations (Chula ETD)
This research is to examine impact of COVID-19 cases and government response to COVID-19 to cross-listed companies’ stock return, mispricing and volatility of the mispricing, using evidence from 164 Canadian companies’ stocks listed on Toronto Stock Exchange (TSX shares) and cross-listed in New York Stock Exchange or NASDAQ (US shares). Our results show that there is negative impact from growth of COVID-19 cases to stock return and positive impact from government response to COVID-19 to stock return in both Canada and US. As for impact to mispricing, using price premium of stock listed in Canada relative to US as a …
Spac Sponsors And Their Effects On Spac Prices, Kanda Karnjanonun
Spac Sponsors And Their Effects On Spac Prices, Kanda Karnjanonun
Chulalongkorn University Theses and Dissertations (Chula ETD)
The purpose of this paper is to find the effect from SPAC sponsor after the merger announcement. I study SPAC IPOs which had acquiror and target nation in the United States and were public between January 2020 and December 2021. The final sample has 186 SPACs. I select The Forbes 400 in 2021 as a proxy for sponsor reputation. I use event study methodology to test for SPAC sponsors and their effects on SPAC prices. I find that there is no statistical evidence that sponsor reputation has impact on SPACs price on the announcement date of combination. There are two …
The Impacts Of Credit Rating Changes On Firm’S Dividend Payout And Investment Policies – Evidence In Thailand, Jakkrapob Choojan
The Impacts Of Credit Rating Changes On Firm’S Dividend Payout And Investment Policies – Evidence In Thailand, Jakkrapob Choojan
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper studies relationship between impacts of change in credit rating on firm's dividend payout and investment policies. We use data from listed companies in Stock Exchange of Thailand during 2000 - 2021. This paper applies fixed effect ordinary least squares to evaluate impacts of change in credit rating. From this paper, downgraded firms will decrease dividend payout and investment. However, upgraded firms will increase dividend payout and investment. Moreover, this paper studies relationship between impacts of change in credit rating on firm's investment efficiency. From this paper, downgraded firms will overinvest and upgraded firms will underinvest. This paper provides …
Examination Of Facebook's Announcement Effect On Metaverse Tokens, Chalakorn Sathiwas
Examination Of Facebook's Announcement Effect On Metaverse Tokens, Chalakorn Sathiwas
Chulalongkorn University Theses and Dissertations (Chula ETD)
In this research, we study an announcement effect of Facebook Inc.’s rebranding to Meta Platform Inc. in October 2021, as a flagship event that sheds spotlight to the metaverse business, on 50 metaverse-related cryptographic tokens. Using Google’s CausalImpact package in R with historical daily returns within -30,7 windows, the model expects a 11.80% counterfactual CAR but the actual CAR is 69.20%, indicating a 57.40% absolute effect of this announcement on aggregate metaverse tokens at 99% significant level. We also further regress five factors, namely game-fi, marketplace, holders, illiquidity, and VC factor on the post-announcement CAR. However, the result is sparse. …
Does Accounting Quality Reduce External Financial Constraints?, Chapit Asirapongporn
Does Accounting Quality Reduce External Financial Constraints?, Chapit Asirapongporn
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study investigates how accounting quality relates to financial constraints at the firm level. In this study, our first hypothesis is that higher accounting quality reduces financial constraints at the firm level. Our second hypothesis is that higher accounting quality reduces financial constraints more after IFRS adoption in 2011 than before IFRS adoption in Thailand. Our third hypothesis is that higher accounting quality reduces financial constraints more in state-owned enterprises than in privately-owned enterprises. Lastly, auditing quality could be another proxy of accounting quality. Therefore, our fourth hypothesis is that higher auditing quality reduces financial constraints at the firm level. …
The Co-Movement Between Equity Markets Of Thailand And China : A Wavelet-Based Approach, Shilei Sun
The Co-Movement Between Equity Markets Of Thailand And China : A Wavelet-Based Approach, Shilei Sun
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper applied the MODWT wavelet method to decompose correlations of the stock market of Thailand and China into different time scales and frequencies. The decomposed correlations are then examined and compared between short-term and long-term, and also between different time periods when the interdependence of two markets is expected to change. The result shows that long-term correlation is not significantly higher and sometimes is significantly lower than the short-term, whereas the correlation does significantly increase from 2005 to 2020. Furthermore, the paper investigates the effectiveness of using the correlation in the suitable time scale and frequency in an application …
The Impact Of Moral Hazard In Institutional Environment On The Decision To Perform Partial Acquisition Or Full Acquisition, Thornthep Paengsawat
The Impact Of Moral Hazard In Institutional Environment On The Decision To Perform Partial Acquisition Or Full Acquisition, Thornthep Paengsawat
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper investigates the impact of moral hazard on the corporate strategic decision regarding Mergers and Acquisitions. Whether the decision by the acquirer to make partial or full acquisitions is driven by moral hazard is the main implication of this research paper. Considering several subsamples of mergers and acquisition transactions, in domestic transaction, an increase in private benefits of control does increase the odd of making partial acquisition. Considering the subsample of cross-border acquisitions, private benefits of control still increases the odd of making partial acquisition but the effect is less pronounced. Having control for the profit-maximizing reasons to make …
The Effect Of Tax Avoidance On Firm Value In The Set, Jeff Dardouillet
The Effect Of Tax Avoidance On Firm Value In The Set, Jeff Dardouillet
Chulalongkorn University Theses and Dissertations (Chula ETD)
No abstract provided.
How Does Thai Stock Market React To The Environmental Policy Announcements?, Veerapat Virochpoka
How Does Thai Stock Market React To The Environmental Policy Announcements?, Veerapat Virochpoka
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper investigated the impact of environmental policy announcements to the stocks in the Stock Exchange of Thailand. The announcements are related to climate change in the world forum (Paris Agreement) and plastic waste management. Investors are aware of the environmental policy which could have an impact to firms. We found that 7 out of 8 announcements experienced significant cumulative abnormal returns (both positive and negative). In terms of industry, the only industry which reacted to all announcements is industrials. The majority of firms in the industrials industry are operators related to chemicals, automotive and general manufacturing which are more …
The Hedging Effectiveness Of Disruptive Technology Etfs To Asia Emerging Markets, Theerapong Theerahsapphawittaya
The Hedging Effectiveness Of Disruptive Technology Etfs To Asia Emerging Markets, Theerapong Theerahsapphawittaya
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study examines the role of hedge and safe haven of four disruptive technology ETFs to six Asia emerging markets and assess whether if COVID-19 pandemic has altered the dynamic conditional correlations and hedge effectiveness between these assets. Using daily return data from February 23, 2018 to January 28, 2022, first, the results indicate that despite the outperformance of disruptive technology ETF’s returns during COVID-19 pandemic, these ETFs do not have a hedge or safe haven property against Asia emerging market downturns as their returns were still positively correlated. They can only be used as diversifier tools to the Asia …
Mutual Fund Performance Evaluation With Active Peer Benchmarks Of Domestic Equity Funds In Thailand, Pornthip Supasinthanaphat
Mutual Fund Performance Evaluation With Active Peer Benchmarks Of Domestic Equity Funds In Thailand, Pornthip Supasinthanaphat
Chulalongkorn University Theses and Dissertations (Chula ETD)
We use the active peer benchmarks (APB) methodology suggested by Hunter et al. (2014) to capture commonalities or common idiosyncratic noise in fund strategies. These commonalities cannot be captured by the Carhart 4-factor model and it also decreases the accuracy in fund performance evaluation. Firstly, we examine the efficiency of the APB methodology compared with the Carhart 4-factor model. Then we also use the APB methodology to evaluate the performance of actively managed Thai open-end domestic equity funds from January 2006 through December 2020. In the APB methodology, we focus on two dimensions: fund returns and the fund’s investment objectives. …
The Impact Of Institutional Ownership And Valuation On Stock Price Around Set50 Index Inclusion And Exclusion, Pranittra Ritthiwitthayasakun
The Impact Of Institutional Ownership And Valuation On Stock Price Around Set50 Index Inclusion And Exclusion, Pranittra Ritthiwitthayasakun
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study examines the impact of institutional ownership and valuation on stock price around the changes in index constituents. Specifically, this paper studies the significant SET50 index during the period of 2014 – 2021. According to the empirical result, there is an asymmetric price response between index additions and index deletions. The effects from exclusions are considerably stronger than from inclusions. The findings also show that percentage ownership of institutional investors and abnormal return are positively correlated in case of exclusions but not for inclusions (though insignificant). Companies deleted from the index result in lower institutional holdings and subsequently exhibit …
Does Bond Market Development Impact The Flight-To-Quality From Stock To Bond During Covid-19?, Patcharee Sae-Tiaw
Does Bond Market Development Impact The Flight-To-Quality From Stock To Bond During Covid-19?, Patcharee Sae-Tiaw
Chulalongkorn University Theses and Dissertations (Chula ETD)
This paper analyzed flight to quality effect from stocks to government bonds in 46 countries including developed and emerging countries during COVID pandemic. The empirical result from panel data framework shows that the flights exist and government bonds remain offered diversification benefit to investors when they are most needed. The negative stock-bond correlation was also amplified when pandemic is more severe in developed countries. Moreover, this study reveals that countries with a higher degree of bond market development can support bonds act as a safe haven better and have more negative in stock-bond correlation.