We build an equilibrium model to explain why stock return predictability concentrates in bad times. The key feature is that investors use different forecasting models, and hence assess uncertainty differently. As economic conditions deteriorate, uncertainty rises and investors' opinions...

We propose a new 3-step resampling approach to forecast portfolio tail risk conditional on the economic state. The approach first predicts economic states using a set of macroeconomic and financial variables. We then forecast the joint distribution of multiple assets in the portfolio according...