25 years of volatility research has left the macroeconomic environment playing a minor role. This paper proposes modeling equity volatilities as a combination of macroeconomic effects and time series dynamics. High frequency return volatility is specified to be the product of a slow moving...

We propose a new method for pricing options based on GARCH models with filtered historical innovations. In an incomplete market framework, we allow for different distributions of historical and pricing return dynamics, which enhances the model's flexibility to fit market option prices. An...

Twenty-five years of volatility research has left the macroeconomic environment playing a minor role. This paper proposes modeling equity volatilities as a combination of macro- economic effects and time series dynamics. High-frequency return volatility is specified to be the product of a...

Intuition suggests that firms with higher cash holdings should be "safer" and have lower credit spreads. Yet empirically, the correlation between cash and spreads is robustly positive. This puzzling finding can be explained by the precautionary motive for saving cash, which in our model causes...

Intuition suggests that firms with higher cash holdings should be "safer" and have lower credit spreads. Yet empirically, the correlation between cash and spreads is robustly positive. This puzzling finding can be explained by the precautionary motive for saving cash, which in our model causes...

We show that wrongful discharge laws--laws that protect employees against unjust dismissal--spur innovation and new firm creation. Wrongful discharge laws, particularly those that prohibit employers from acting in bad faith ex post, limit employers' ability to hold up innovating employees after...

What is the effect of financial crises and their resolution on banks' choice of liquidity? When banks have relative expertise in employing risky assets, the market for these assets clears only at fire-sale prices following a large number of bank failures. The gains from acquiring assets at...

As the number of bank failures increases, the set of assets available for acquisition by surviving banks enlarges but the total liquidity available with surviving banks falls. This results in "cash-in-the-market" pricing for liquidation of banking assets. At a sufficiently large number of bank...

This paper analyzes corporate bond valuation and optimal call and default rules when interest rates and firm value are stochastic. It then uses the results to explain the dynamics of hedging. Bankruptcy rules are important determinants of corporate bond sensitivity to interest rates and firm...

What determines the sustainability of sovereign debt? We develop a model where myopic governments seek popularity but can nevertheless commit credibly to service external debt. They do not default when debt is low because they would lose access to debt markets and be forced to reduce spending;...