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What Makes Investors Trade?

32 Pages Posted: 10 Jul 2000  

Mark Grinblatt

University of California, Los Angeles (UCLA) - Finance Area; Yale University - International Center for Finance; National Bureau of Economic Research (NBER)

Matti Keloharju

Aalto University - School of Business; Research Institute of Industrial Economics (IFN); Centre for Economic Policy Research (CEPR)

Date Written: February 2000

Abstract

A unique data set allows us to monitor the buys, sells, and holds of individuals and institutions in the Finnish stock market on a daily basis. With this data set, we employ Logit regressions to identify the determinants of buying and selling activity over a two-year period. We find evidence that investors are reluctant to realize losses, that they engage in tax-loss selling activity, and that past returns and historical price patterns, such as being at a monthly high or low, affect trading. There also is modest evidence that life cycle trading plays a role in the pattern of buys and sells.

JEL Classification: G12

Suggested Citation

Grinblatt, Mark and Keloharju, Matti, What Makes Investors Trade? (February 2000). Yale ICF Working Paper No. 00-02; Yale SOM Working Paper No. ICF 00-02. Available at SSRN: https://ssrn.com/abstract=228801 or http://dx.doi.org/10.2139/ssrn.228801

Mark Grinblatt (Contact Author)

University of California, Los Angeles (UCLA) - Finance Area ( email )

Los Angeles, CA 90095-1481
United States
310-825-1098 (Phone)
310-206-5455 (Fax)

Yale University - International Center for Finance

Box 208200
New Haven, CT 06520-8200
United States

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

Matti Keloharju

Aalto University - School of Business ( email )

P.O. Box 21210
AALTO, FI-00076
Finland
+358 40 353 8043 (Phone)

Research Institute of Industrial Economics (IFN) ( email )

Box 55665
Grevgatan 34, 2nd floor
Stockholm, SE-102 15
Sweden

Centre for Economic Policy Research (CEPR) ( email )

77 Bastwick Street
London, EC1V 3PZ
United Kingdom

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