Many financial applications, such as risk analysis and derivatives pricing, depend on time scaling of risk. A common method for this purpose, though only correct when returns are iid normal, is the square-root-of-time rule where an estimated quantile of a return distribution is scaled to a lower...

Market liquidity is typically characterised by a number of ad-hoc metrics, such as depth (or market impact), volume, intermediation costs (such as breadth) etc. No general coherent definition seems to exist, and few attempts have been made to justify the existing metrics on welfare grounds. In...

We study a simple rational expectations model whose asset pricing implications address some of the mispricings, informational inefficiencies and overreactions observed in real markets, without a need to resort to behavioural assumptions. We accomplish this by relying on the plausible joint...

The implications of Value-at-Risk regulations are analyzed in a CARA--normal general equilibrium model. Financial institutions are heterogeneous in risk preferences, wealth and the degree of supervision. Regulatory risk constraints lower the probability of one form of a systemic crisis, at the...

We study a model with restricted investor participation in which strategic arbitrageurs reap profits by exploiting mispricings across different market segments. We endogenize the asset structure as the outcome of a security design game played by the arbitrageurs. The equilibrium asset structure...