Many investors purchase stock but are reluctant or unable to sell short. Combining this arbitrage asymmetry with the arbitrage risk represented by idiosyncratic volatility (IVOL) explains the negative relation between IVOL and average return. The IVOL-return relation is negative among overpriced...

This paper studies the cross-sectional risk-return trade-off in the stock market. A fundamental principle in finance is the positive relation between risk and expected return, whereas recent empirical evidence suggests the opposite. Using several intuitive risk measures, we show that the...

Short selling, as compared to purchasing, faces greater risks and other potential impediments. This arbitrage asymmetry explains the negative relation between idiosyncratic volatility (IVOL) and average return. The IVOL effect is negative among overpriced stocks but positive among underpriced...

Uncertainty has qualitatively different implications than risk in studying executive incentives. We study the interplay between profitability uncertainty and moral hazard, where profitability is multiplicative with the managerial effort. Investors who face greater uncertainty desire faster...