We investigate hedge fund firms' unobserved performance (UP), measured as the risk-adjusted return difference between a fund firm's reported return and hypothetical portfolio return derived from its disclosed long equity holdings. Fund firms with high UP outperform those with low UP by 7.2% p.a....

This paper provides the first empirical test of the diversification of opinions theory and the group shift theory using real business data. Our data set covers management teams and single managers of US equity mutual funds. Our results reject the group shift theory and support the...

We investigate hedge fund firms' unobserved performance (UP), measured as the riskadjusted return difference between a fund firm’s reported return and hypothetical portfolio return derived from its disclosed long equity holdings. Fund firms with high UP outperform those with low UP by 7.2%...