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Do Institutional Investors Destabilize Stock Prices? Evidence on Herding and Feedback Trading
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JOSEF LAKONISHOK University of Illinois at Urbana-Champaign; National Bureau of Economic Research (NBER) ANDREI SHLEIFER Harvard University - Department of Economics; National Bureau of Economic Research (NBER); European Corporate Governance Institute (ECGI) ROBERT W. VISHNY University of Chicago - Graduate School of Business; National Bureau of Economic Research (NBER)
September 1991
NBER Working Paper No. W3846
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Abstract:
This paper uses a new data set of quarterly portfolio holdings of 769 all-equity pension funds between 1985 and 1989 to evaluate the potential effect of their trading on stock prices. We address two aspects of trading by money managers: herding, which refers to buying (selling) the same stocks as other managers buy (sell) at the same time; and positive-feedback trading, which refers to buying winners and selling losers. These two aspects of trading are commonly a part of the argument that institutions destabilize stock prices. At the level of individual stocks at quarterly frequencies, we find no evidence of substantial herding or positive-feedback trading by pension fund managers, except in small stocks. Also, there is no strong cross-sectional correlation between changes in pension funds' holdings of a stock and its abnormal return.
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JEL Classifications: S2
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Working Paper Series
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Suggested Citation
Lakonishok, Josef, Shleifer, Andrei and Vishny, Robert W., "Do Institutional Investors Destabilize Stock Prices? Evidence on Herding and Feedback Trading"
(September 1991).
NBER Working Paper No. W3846. Available at SSRN: http://ssrn.com/abstract=226729
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Contact Information for
JOSEF
LAKONISHOK
(Contact Author)
Email address for JOSEF
LAKONISHOK
University of Illinois at Urbana-Champaign
1206 South Sixth Street
Champaign
, IL
61820
United States
217-333-7185 (Phone)
217-244-3102 (Fax)
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(No e-mail address available for JOSEF
LAKONISHOK
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge
, MA
02138
United States
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Contact Information for
ANDREI
SHLEIFER
Email address for ANDREI
SHLEIFER
Harvard University - Department of Economics
Littauer Center
Cambridge
, MA
02138
United States
617-495-5046 (Phone)
617-496-1708 (Fax)
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(No e-mail address available for ANDREI
SHLEIFER
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge
, MA
02138
United States
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(No e-mail address available for ANDREI
SHLEIFER
European Corporate Governance Institute (ECGI)
c/o ECARES ULB CP 114
B-1050 Brussels
Belgium
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Contact Information for
ROBERT
W.
VISHNY
Email address for ROBERT
W.
VISHNY
University of Chicago - Graduate School of Business
Chicago
, IL
60637
United States
312-702-2522 (Phone)
312-702-0118 (Fax)
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(No e-mail address available for ROBERT
W.
VISHNY
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge
, MA
02138
United States
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