In an equilibrium Black and Scholes (1973) economy, a firm's default risk and its expected equity return are non-monotonically related. This may explain the surprising relation found between these two variables in recent empirical research. Although changes in default risk induced by expected...

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...