Survey respondents strongly disagree about return risks and, increasingly, macroeconomic uncertainty. This may have contributed to higher asset prices through increased use of collateralisation, which allows risk-neutral investors to realise perceived gains from trade. Investors with lower risk...

Existing literature continues to be unable to offer a convincing explanation for the volatility of the stochastic discount factor in real world data. Our work provides such an explanation. We do not rely on frictions, market incompleteness or transactions costs of any kind. Instead, we modify a...

In an economy where entrepreneurs with unequal ‘abilities’ face alternative investment projects, which differ in their degree of risk and productivity, we analyse the Nash equilibrium contracts arising from a banks-borrowers game in the context of asymmetric information. We show that, for a...

We analyse the Pareto optimal contracts between lenders and borrowers in a model with asymmetric information. The model is a generalization of the Rothschild-Stiglitz pure adverse selection problem to include moral hazard with limited liability contracts. Entrepreneurs with unequal ``abilities"...

How much of carry trade excess returns can be explained by the presence of disaster risk? To answer this question, we propose a simple structural model that includes both Gaussian and disaster risk premia and can be estimated even in samples that do not contain disasters. The model points to a...

This paper re-examines the standard ‘unbiasedness’ hypothesis in foreign exchange markets, according to which the forward premium should be an unbiased predictor of the future change of the spot exchange rate. If traders are heterogeneous, they may consist of ‘fundamentalists’ who...

We develop a stylized model of economic growth with bubbles. In this model, financial frictions lead to equilibrium dispersion in the rates of return to investment. During bubbly episodes, relatively inefficient investors demand bubbles while relatively efficient investors supply them. Because...

This paper shows that there exists a strong positive correlation between long-term growth rates and the persistence of output fluctuations in a cross section of countries. We argue that the traditional explanation of persistence, a real business cycles model with exogenous productivity shocks,...

Over the last two decades U.S. aggregate wealth has fluctuated substantially. Against the backdrop of the Great Recession, the effects of these boom-and-bust cycles have come to dominate academic and policy discussions. How can we explain these fluctuations in wealth? Why are these fluctuations...

We study a dynamic economy where credit is limited by insufficient collateral and, as a result, investment and output are too low. In this environment, changes in investor sentiment or market expectations can give rise to credit bubbles, that is, expansions in credit that are backed not by...