We link a seemingly biased trading behavior to equilibrium asset prices. U.S. equity mutual fund managers tend to sell both their big winners and big losers. This selling pressure pushes down current prices and leads to higher future returns; aggregating across funds, we nd that securities for...

We show that mutual fund ratings generate correlated demand that creates systematic price fluctuations. Mutual fund investors chase fund performance via Morningstar ratings. Until June 2002, funds pursuing the same investment style had highly correlated ratings. Therefore, rating-chasing...

We show that mutual fund managers' trading experiences bias their future repurchasing decisions. Specifically, a fund is 17% more likely to repurchase a stock when it previously sold the stock for a gain rather than for a loss. Fund managers still prefer to repurchase stocks they sold for a gain...