traders face this sort of joint inference problem, the risk of selecting the wrong features can spill over and distort how … even if traders themselves are fully rational. Moreover, I show how modeling feature-selection risk leads to additional … predictions that are outside the scope of noise-trader risk. For instance, to discover pricing errors as quickly as possible, a …

Risk diversification is the basis of insurance and investment. It is thus crucial to study the effects that could limit … it. One of them is the existence of systemic risk that affects all of the policies at the same time. We introduce here a … probabilistic approach to examine the consequences of its presence on the risk loading of the premium of a portfolio of insurance …

The regulatory use of banks' internal models makes capital requirements more risk-sensitive but invites regulatory … arbitrage. I develop a framework to study bank regulation with strategic selection of risk models. A bank supervisor can … discourage arbitrage by auditing risk models, and implements capital ratios less risk-sensitive than in the first-best to reduce …