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放空價格限制對市場品質之影響

The Impact of Short-Sale Price Constraints on Market Quality

摘要


本研究探討放空價格限制措施對證券市場的影響,進而瞭解平盤以下不得放空之機制是否應持續調整放寬標的。本研究的實證結果指出,取消放空價格限制的個股,其市場波動性顯著降低、市場流動性顯著提高、市場效率性亦顯著提升;且放空活動對市場品質具有正向的影響,顯示放空價格限制的解除對市場品質具有正向影響。再者,本研究發現,受到平盤以下不得放空限制之股票,具有較差的市場交易品質,且依公司特徵分群,亦獲得穩健性的檢測結果。最後,本文發現,在2008年全球金融風暴期間,政府的全面禁止放空措施對市場品質具負面影響。因此,本文的實證結果支持放寬平盤以下不得放空之標的,逐步取消平盤以下不得放空的限制,以增進市場交易品質,此結果可提供政府未來擬定或修改證券交易制度之參考。

並列摘要


This study explores the effect of short-sale price constraints on the Taiwan Stock Exchange (TWSE) and further investigates whether short-sale price constraints should be relaxed to other targets. We find that the removal of up-tick rule contributes to the decrease in market volatility, and the increase in market liquidity and efficiency, implying that the removal of up-tick rule can improve market quality. We find that stocks with up-tick rule have inferior trading quality. These results are robust even after controlling firm characteristics. Finally, we find that short sales ban on stocks during the 2008 global financial crisis is detrimental for market quality. Therefore, this provides strong evidence supporting that short-sale price constraints should be relaxed to other targets and has important implications for the government to build or revise securities trading systems in the future.

參考文獻


王健聰、闕河士(2006),「股價波動性、融券賣空限制與定價績效-SGX-DT摩根台股與TAIFEX台股指數期貨之實證」,《交大管理學報》,第26卷第2期,91-122。
莊家彰、管中閔(2005),「臺灣與美國股市價量關係的分量迴歸分析」,《經濟論文》,第33卷第4期,379-404。
王健聰(2006),「市場不完美性與指數套利關係之研究」,《管理與系統》,第13卷第4期,441-469。
Ahn, H. J., K. H. Bae and K. Chan (2001), “Limit Orders, Depth and Volatility: Evidence from the Stock Exchange of Hong Kong,” Journal of Finance, Vol. 56, 767-788.
Alexander, G. and M. Peterson (2008), “The Effect of Price Tests on Trader Behavior and Market Quality: An Analysis of Reg SHO,” Journal of Financial Markets, Vol. 11, 84-111.

被引用紀錄


謝家瑋(2015)。實施現股當日沖銷制度對臺灣股票市場品質之影響〔碩士論文,淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2015.00481
陳罕伏(2016)。融資及融券對股價崩盤的影響〔碩士論文,長榮大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0015-0905201615153900

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