We provide empirical evidence for the incomplete information model advanced by Merton (1987), which shows that the relation between idiosyncratic volatility (IV) and expected return is conditional on the firm's investor base. Using four different proxies for investor base, we show that...

In this paper, we explain momentum profits using innovations in aggregate economy-wide default risk. First, we show that momentum returns are positive only during high default shocks and nonexistent otherwise. Second, we present evidence suggesting that a conditional default shock factor is...