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All Guts, No Glory: Trading and Diversification among Online Investors

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  • Anders Anderson
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    Abstract

    "I explore cross-sectional portfolio performance in a sample containing 324,736 transactions conducted by 16,831 Swedish investors at an Internet discount brokerage firm during the period May 1999 to March 2002. On average, investors hold undiversified portfolios, show a strong preference for risk, and trade aggressively. I measure performance using a panel data model, and explain the cross-sectional variation using investors' turnover, portfolio size and degree of diversification. I find that turnover is harmful to performance due to fees, and is therefore more predominant among investors with small portfolios. I argue that the degree of diversification is a proxy for investor skill, and it has a separate and distinct positive effect on performance. Investors underperform the market by about 8.5% per year on average, of which half can be attributed to trading costs." Copyright 2007 The Authors Journal compilation (c) 2007 Blackwell Publishing Ltd.

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    Bibliographic Info

    Article provided by European Financial Management Association in its journal European Financial Management.

    Volume (Year): 13 (2007)
    Issue (Month): 3 ()
    Pages: 448-471

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    Handle: RePEc:bla:eufman:v:13:y:2007:i:3:p:448-471

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    Cited by:
    1. Hoechle, Daniel & Schmid, Markus & Zimmermann, Heinz, 2012. "Measuring Long-term Performance: a Regression Based Generalization of the Calendar Time Portfolio Approach," Working Papers on Finance 1216, University of St. Gallen, School of Finance.

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