Abstract

http://ssrn.com/abstract=2318788
 
 

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Scale and Skill in Active Management


Lubos Pastor


University of Chicago - Booth School of Business; Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER)

Robert F. Stambaugh


University of Pennsylvania - The Wharton School; National Bureau of Economic Research (NBER)

Lucian Taylor


University of Pennsylvania - The Wharton School

July 30, 2014


Abstract:     
We empirically analyze the nature of returns to scale in active mutual fund management. We find strong evidence of decreasing returns at the industry level: As the size of the active mutual fund industry increases, a fund's ability to outperform passive benchmarks declines. At the fund level, all methods considered indicate decreasing returns, though estimates that avoid econometric biases are insignificant. We also find that the active management industry has become more skilled over time. This upward trend in skill coincides with industry growth, which precludes the skill improvement from boosting fund performance. Finally, we find that performance deteriorates over a typical fund's lifetime. This result can also be explained by industry-level decreasing returns to scale.

Number of Pages in PDF File: 51

Keywords: returns to scale, mutual funds, active management, skill

JEL Classification: G10, G20

working papers series


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Date posted: September 1, 2013 ; Last revised: August 1, 2014

Suggested Citation

Pastor, Lubos and Stambaugh, Robert F. and Taylor, Lucian, Scale and Skill in Active Management (July 30, 2014). Available at SSRN: http://ssrn.com/abstract=2318788 or http://dx.doi.org/10.2139/ssrn.2318788

Contact Information

Lubos Pastor (Contact Author)
University of Chicago - Booth School of Business ( email )
5807 S. Woodlawn Avenue
Chicago, IL 60637
United States
773-834-4080 (Phone)
773-702-0458 (Fax)
HOME PAGE: http://www.ChicagoGSB.edu/fac/lubos.pastor/
Centre for Economic Policy Research (CEPR)
77 Bastwick Street
London, EC1V 3PZ
United Kingdom
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
Robert F. Stambaugh
University of Pennsylvania - The Wharton School ( email )
The Wharton School, Finance Department
University of Pennsylvania
Philadelphia, PA 19104-6367
United States
215-898-5734 (Phone)
215-898-6200 (Fax)

National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
Lucian Taylor
University of Pennsylvania - The Wharton School ( email )
3641 Locust Walk
Philadelphia, PA 19104-6365
United States
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