"When risk-factor loadings are time-varying and unobservable, investors are forced to form beliefs about the levels of their loadings. The learning process involved in forming these beliefs has normative implications for asset-pricing tests. This paper develops an equilibrium model of learning...

The paper investigates the determinants of limits of arbitrage for liquidity providers. Using data on institutional transactions, we compare hedge fund trades to those of other institutions. We find that hedge funds' liquidity supply is more relevant for stock-level liquidity, but it is also...

We complement the conditional CAPM by introducing unobservable long-run changes in risk factor loadings. In this environment, investors rationally 'learn' the long-level of factor loadings from the observation of realized returns. As a direct consequence of this assumption, conditional betas are...

Private equity has traditionally been thought to provide diversi cation bene ts. However, these benefi ts may be lower than anticipated. We find that private equity suffers from signifi cant exposure to the same liquidity risk factor as public equity and other alternative asset classes. The...

This paper establishes a new empirical fact: mutual funds' flow-performance sensitivity is a hump-shaped function of aggregate risk-factor realizations. Explanations based on extant theories can only explain a fraction of the pattern. We thus develop a new parsimonious model. It assumes Bayesian...

The paper studies liquidity provision by institutional investors using trade-level data. We find that hedge fund trades are a more important predictor of stock-level liquidity than mutual fund trades. However, hedge funds' liquidity provision is more exposed to financial conditions than that of...