We develop a model of monetary exchange in over-the-counter markets to study the effects of monetary policy on asset prices and standard measures of financial liquidity, such as bid-ask spreads, trade volume, and the incentives of dealers to supply immediacy, both by participating in the...

This paper develops a new approach to explain why risk factors constructed from option returns are priced in the stock market. We decompose an option- based factor into three main components and identify the one responsible for the beta-return relationship. Applying this method to the bear risk...

We show how the timing of financial innovation might have contributed to the mortgage bubble and then to the crash of 2007-2009. We show why tranching and leverage first raised asset prices and why CDS lowered them afterwards. This may seem puzzling, since it implies that creating a derivative...

We show how the timing of financial innovation might have contributed to the mortgage boom and then to the bust of 2007-2009. We study the effect of leverage, tranching, securitization and CDS on asset prices in a general equilibrium model with collateral. We show why tranching and leverage tend...

Endogenous movements in the wealth distribution can generate asset price booms in which financial intermediaries increasingly engage in moral hazard and originate low-quality assets that are excessively exposed to aggregate risk. Central to the mechanism is a pecuniary externality whereby buyers...

We empirically evaluate a behavioural model with boundedly rational traders who disagree about the persistence of deviations from the fundamental stock price. Fundamentalist traders believe in mean-reversion, while chartists extrapolate trends. Agents gradually switch between the two rules,...