Some investment advisors offer multiple versions of a fund with the same manager and highly correlated returns. But these twinʺ funds are separate portfolios for different investors with differing abilities to select and monitor managers. Using a matched sample of retail and institutional twin...

We examine team diversity and performance using the asset management industry as a laboratory. Employing political affiliation as a proxy, we find ideologically diverse teams perform better than homogeneous teams. The mechanism involves both improved decision-making due to more diverse...