NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Judging Fund Managers by the Company They Keep

Randolph Cohen, Joshua Coval, Lubos Pastor

NBER Working Paper No. 9359
Issued in December 2002
NBER Program(s):   AP

We develop a performance evaluation approach in which a fund manager's skill is judged by the extent to which his investment decisions resemble the decisions of managers with distinguished performance records. The proposed performance measures are estimated more precisely than standard measures, because they use historical returns and holdings of many funds to evaluate the performance of a single fund. According to one of our measures, funds with significantly positive ability considerably outnumber funds with significantly negative ability at the end of our sample. Simulations demonstrate that our measures are particularly useful in ranking managers. In an application that relies on such ranking, we find only weak persistence in the performance of U.S. equity funds after accounting for momentum in stock returns.

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Document Object Identifier (DOI): 10.3386/w9359

Published: Randolph B. Cohen & Joshua D. Coval & Lubos Pástor, 2005. "Judging Fund Managers by the Company They Keep," Journal of Finance, American Finance Association, vol. 60(3), pages 1057-1096, 06.

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