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On the Industry Concentration of Actively Managed Equity Mutual Funds

Marcin Kacperczyk, Clemens Sialm () and Lu Zheng

No 10770, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: Mutual fund managers may decide to deviate from a well-diversified portfolio and concentrate their holdings in industries where they have informational advantages. In this paper, we study the relation between the industry concentration and the performance of actively managed U.S. mutual funds from 1984 to 1999. Our results indicate that, on average, more concentrated funds perform better after controlling for risk and style differences using various performance measures. This finding suggests that investment ability is more evident among managers who hold portfolios concentrated in a few industries.

JEL-codes: G2 (search for similar items in EconPapers)
Date: 2004-09
New Economics Papers: this item is included in nep-fin
Note: CF AP
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Published as Marcin Kacperczyk & Clemens Sialm & Lu Zheng, 2005. "On the Industry Concentration of Actively Managed Equity Mutual Funds," Journal of Finance, American Finance Association, vol. 60(4), pages 1983-2011, 08.

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