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Short selling and intraday volatility: evidence from the Chinese market
Yongjie Zhang1, Keming Liu2, Dehua Shen1
1College of Management and Economics, Tianjin University, 300072 Tianjin, People's Republic of China ; China Center for Social Computing and Analytics, Tianjin University, 300072 Tianjin, People's Republic of China.
Abstract:
The implementation of margin trading and securities lending mechanism offers us a unique circumstance to analyze the impact of short selling regulations in China. We define the addition events as the stocks are included to the designated securities list and therefore can be sold short. By focusing on the 30 trading days around the addition events, the results document statistically significant post-event increase in volatility relative to the overall market and absolute value of trading volume. Specifically, small-cap stocks experience the sharpest increase. The robustness is also performed to validate the results.
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