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  • 學位論文

股票市場大幅下挫日,公司治理與股價報酬之關聯性

Stock Market Returns, Corporate Characteristics, And Corporate Governance On Overall Stock Market Slump Date

指導教授 : 趙莊敏
共同指導教授 : 吳斯偉(Shih-Wei Wu)

摘要


本文研究方法採用多元迴歸分析,探討整體市場大幅下挫時期,股票的日內報酬模式;並探討公司治理、Fama-French三因子及公司財務資訊變數對報酬之影響;最後分析公司治理優劣對報酬的影響及是否對三因子變數具有加劇或減緩的效果。 研究結果如下: 較高BETA的股票,在其本身系統風險較大與市場連動性較高的情況下,會傾向導致更為巨幅的損失。公司規模較大之企業在中午以前相對抗跌,但盤末可能成為出脫持股的選擇,股價在盤末相對重跌。股價淨值比高之公司,傾向產生相對抗跌的效果。公司資本結構和獲利能力反應於開盤時段,債務沉重之公司成為主要賣出的對象,獲利能力較佳之企業則相對抗跌。外資持股比率則在開盤發揮影響,股價有所支撐。經理人持股比率和董監事持股比率在日內報酬試驗中則無強烈顯著性存在。董監事質押比率則在盤末呈現正向關聯,報酬損失較小。公司治理優良的公司股票在此時期,傾向在盤末產生較為嚴重的損失;對BETA將產生擴大損失的加劇效果;反之對公司市值具有支撐價格的減緩效果。

並列摘要


This paper use the multivariate regression analysis to examine intraday patterns of the stock return on the Taiwan Stock Exchange (TSE) and study the effects of several company-specific and corporate governance characteristics on stock returns in overall stock market slump. The purposes of this study are as follows: (1) to investigate the price patterns in each intraday trading segment during the stock market slump. (2) to investigate the determinants of stock returns during the stock market slump. (3) to investigate whether corporate governance characteristics would affect the companies’ returns during the stock market slump. From this study, we are able to understand the determinants of stock market returns in overall market slump, and whether the corporate governance characteristics would affect the market returns. Besides, we are able to observe the patterns of price changes during the trading hours, and understand how the stock returns during each trading segments would be affected by the characteristics of the firms.

參考文獻


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