We propose an equilibrium model for defaultable bonds that are subject to contagion risk. Contagion arises because agents with "fragile beliefs"' are uncertain about the underlying economic state and its probability. Estimation on sovereign European credit default swaps (CDS) data shows that...

Prior to the stock market crash of 1987, Black-Scholes implied volatilities of S&P 500 index options were relatively constant across moneyness. Since the crash, however, deep out-of-the-money S&P 500 put options have become %u2018expensive%u2019 relative to the Black-Scholes benchmark. Many...

Structural models of default calibrated to historical default rates, recovery rates, and Sharpe ratios typically generate Baa--Aaa credit spreads that are significantly below historical values. However, this "credit spread puzzle" can be resolved if one accounts for the fact that default rates...

Empirical evidence shows that changes in aggregate labor income and stock market returns exhibit only weak correlation at short horizons. As we document below, however, this correlation increases substantially at longer horizons, which provides at least suggestive evidence that stock returns and...

Using straight industrial bonds with quoted prices, we investigate the determinants of credit spread changes. The variables that should in theory determine credit spread changes in fact have limited explanatory power. Further, the residuals from this first-pass regression are highly...

We study portfolio choice when labor income and dividends are cointegrated. Economically plausible calibrations suggest young investors should take substantial short positions in the stock market. Because of cointegration the young agent's human capital effectively becomes.