We present evidence from an event study that runs counter to the notion that the momentum and book-to-market (B/M) effects can be fully explained by time-varying risk premia. We minimize the joint hypothesis problem in market-efficiency tests by examining a relatively short (26-day) window that...

The emotionally charged debate regarding the broader role of corporations within society has landed squarely in the lap of pension fund and endowment trustees, many of whom are being pressured by their stakeholders to divest themselves of companies that lack so-called social responsibility. Some...