In Boyson, Stahel, and Stulz (2010), we investigate whether hedge funds experience worst return contagion – that is, correlations in extremely poor returns that are over and above those expected from economic fundamentals. We find strong evidence of contagion among hedge funds using eight...

Firms added to the S&P 500 index join a prestigious and exclusive club. They want to fit in the club, which creates a “keeping up with the Joneses” effect. Firms pay more attention to their index peers after inclusion and their investment, external financing, and payouts comove more with...

We investigate the impact on firms of joining the S&P 500 index from 1997 to 2017. We find that the positive announcement effect on the stock price of index inclusion has disappeared and the long-run impact of index inclusion has become negative. Inclusion worsens stock price informativeness and...

In an earlier paper, we investigate whether hedge funds experience worst return contagion — that is, correlations in extremely poor returns that are over and above those expected from economic fundamentals.We find strong evidence of contagion among hedge funds using eight separate style...