Short selling by individual investors: Destabilizing or price discovering?

Chan Shik Jung, Woojin Kim () and Dong Wook Lee

Pacific-Basin Finance Journal, 2013, vol. 21, issue 1, 1232-1248

Abstract: This paper examines how individual investors' participation in short sale affects the efficiency of stock pricing using a unique regulatory change in Korea. The change enables individual investors to sell short some – but not all – domestic stocks, without affecting the short-selling ability of institutions. We find no evidence that individuals' participation in short sale destabilizes stock market. Specifically, our difference-in-difference estimates indicate that stocks show little change in their return volatility or skewness after they become shortable by individuals. Moreover, we find that stocks are traded within a narrower bid–ask spread and deviate less from the random-walk process after becoming shortable by individuals. Overall, our results suggest that at least some individual investors are privy to private information and they contribute to more efficient pricing via their short sales.

Keywords: Short sale; Individual investors; Korean stock market; Pricing efficiency; Destabilizing (search for similar items in EconPapers)
JEL-codes: G10 G14 G20 (search for similar items in EconPapers)
Date: 2013
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Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:pacfin:v:21:y:2013:i:1:p:1232-1248

DOI: 10.1016/j.pacfin.2012.09.001

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