Mutual Fund Herding and the Impact on Stock Prices

49 Pages Posted: 21 Oct 1998

See all articles by Russ Wermers

Russ Wermers

University of Maryland - Robert H. Smith School of Business; European Corporate Governance Institute (ECGI)

Multiple version iconThere are 2 versions of this paper

Date Written: August 1998

Abstract

We analyze the trading activity of the mutual fund industry between 1975 and 1994 to determine whether funds "herd" when they trade stocks and to investigate the impact of herding on stock prices. Although we find little herding by mutual funds in the average stock, we find much higher levels in trades of small stocks and in trading by growth-oriented funds. Stocks that herds buy outperform stocks that they sell by four percent during the following six months; this return difference is much more pronounced among small stocks. Our results are consistent with mutual fund herding speeding the price-adjustment process.

JEL Classification: G11,G12,G23

Suggested Citation

Wermers, Russell R., Mutual Fund Herding and the Impact on Stock Prices (August 1998). Available at SSRN: https://ssrn.com/abstract=136737 or http://dx.doi.org/10.2139/ssrn.136737

Russell R. Wermers (Contact Author)

University of Maryland - Robert H. Smith School of Business ( email )

Department of Finance
College Park, MD 20742-1815
United States
301-405-0572 (Phone)
301-405-0359 (Fax)

HOME PAGE: http://www.rhsmith.umd.edu/finance/rwermers/

European Corporate Governance Institute (ECGI) ( email )

c/o the Royal Academies of Belgium
Rue Ducale 1 Hertogsstraat
1000 Brussels
Belgium

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