research on this hypothesis to open-market share repurchases. Empirical tests showed that the implied volatility spread was not … implied volatility spread and subsequent stock return volatility around open-market share repurchase events. We concluded that … option traders have private information on the volatility of stock returns and superior information processing ability that …

In this paper, we examine the relationship between idiosyncratic volatility and future returns around the firm … volatility is more strongly negative compared to news idiosyncratic volatility. Such findings imply that limited arbitrage cannot … fully explain the negative pricing of idiosyncratic volatility in the Chinese stock market. These results are robust after …