We study China's flagship option market, Shanghai Stock Exchange (SSE) 50 ETF option market, and the information content of trading volume using a proprietary dataset. We find that open buy put-call ratio, defined as put volume over the sum of put and call volumes, of financial institutional...

This paper examine the impact of noise trading on stock liquidity in China. We construct a theoretical model including noise traders, rational traders, and insiders, and test the model using transaction data on individual stocks in the CSI-300 (China-Shanghai-Shenzhen-300-Stock Index) in 2020....