Stocks with high trading volume outperform otherwise stocks for one week, but subsequently underperform at the longer horizon. We show that such time-varying predictability of trading volume is attributed to abnormal trading activity, which is not explained by past volume. Specifically, we find...

This paper focuses on an unexplored dimension of fund managers' timing ability: market-wide tail risk implied by information in options markets. We investigate whether hedge fund managers can strategically time market tail risk implied by options through adjusting their portfolios' market...