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The Anatomy of Day Traders

33 Pages Posted: 8 Dec 2003  

Juhani T. Linnainmaa

USC Marshall School of Business; National Bureau of Economic Research (NBER)

Date Written: June 2003

Abstract

This paper examines the complete trading records of all day traders in Finland. A typical day trader is a male in his late 30s, who lives in the metropolitan area and trades in larger quantities than an investor in a size-matched control group even after ignoring day trades. These traders day-trade stocks that grab their attention, that they own, or that they have day-traded before. They pay close attention to the state of the limit order book, are very active near the end of the trading session, and are strongly deterred by losses. Day traders do not earn better returns than investors in the control group. Their realized returns from day trades are high, but these returns are not representative of overall performance because of their strong reluctance to realize losses.

Suggested Citation

Linnainmaa, Juhani T., The Anatomy of Day Traders (June 2003). AFA 2004 San Diego Meetings. Available at SSRN: https://ssrn.com/abstract=472182 or http://dx.doi.org/10.2139/ssrn.472182

Juhani T. Linnainmaa (Contact Author)

USC Marshall School of Business ( email )

Marshall School of Business
Los Angeles, CA 90089
United States

National Bureau of Economic Research (NBER) ( email )

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

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