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  • 學位論文

豁免融券賣出不得低於前一營業日收盤價對市場品質之影響-以臺灣50指數成分股為例

The Impacts of Permitting Short Sale under Last Trade Price of Taiwan 50 Index Constituents on Market Quality

指導教授 : 周賓凰 周冠男
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摘要


本研究衡量2005年5月16日豁免臺灣50指數成分股融券賣出不得低於前一日收盤價格限制後,全樣本、產業及公司規模等之波動性、流動性及訂價誤差。實施後,全體樣本波動性顯著變小,證券金融保險、其他類股及公司規模大之波動性亦顯著變小,流動性部分,無論全體樣本、公司規模大小、產業類別,流動性皆增加;全體樣本、電子資訊及公司規模大之流動性增加具顯著性。訂價誤差部份,全體樣本及不分公司規模實施前股價皆充分反映訊息,實施後,全體樣本、電子資訊類股及公司規模小者,有顯著超漲超跌。

並列摘要


The authorities waived the restriction of short sale below the last closing price for the compositions of Taiwan 50 Index on May 16, 2007. We try to analyze the effects of waiving restriction by testing the characteristics of volatility, liquidity, and pricing error. After waiving, the volatilities are significantly becoming heavier for the whole samples and the sub-groups of financial sector or with larger market capital. The liquidities are becoming better for the whole samples and all sub-groups no matter what kind of grouping, in which the whole samples and sub-groups of IT sector or with larger market capital are with 99% significance levels. For pricing error, the market prices of the whole samples and the sub-groups classified by market capital had reflected public information enough. After waiving, the whole samples and the sub-groups of IT sector or with smaller market capital have significantly over reflected the public information.

參考文獻


(1)王林弘,「平盤以下不得放空政策對台灣股市報酬分配之影響」,臺灣大學財務金融學研究所碩士論文,2005年。
(7)謝儀蓁,「單樣本問題之無母數方法」,中原大學應用數學研究所碩士論文,2002年。
(18)Wu, J. Julie, 2006, Uptick rule, short selling and price efficiency, working paper, Texas A& M University.
(4)張錦泓,「平盤以下不得融券政策對大型公司影響之研究-宣告效果與政策效果」,靜宜大學會計學系研究所碩士論文,2001年。
(9)Alexander, Gordon J. and Mark A. Peterson, 1999, Short selling on the New York Stock Exchange and the effects of the uptick rule. Journal of Financial Intermediation 8, 90-116.

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楊立昌(2014)。賣空交易對價格效率性之實證研究〔碩士論文,國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-0412201511583115
陳美宮(2015)。探討振興台灣股市政策措施-以現股當沖為例〔碩士論文,國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-0412201512061122

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