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Can small investors exploit the momentum effect?

  • Antonios Siganos


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    This study uses UK data and investigates whether small investors can exploit the continuation effect in share prices. Individual traders are not in a financial position to buy and sell short hundreds of firms, as suggested by existing academic research, and thus this study uses extreme performance companies to implement the strategy. We find that strong momentum gains appear when extreme winners and losers are employed. These returns remain strong even after considering the transaction costs of implementing such strategies, including commissions, stamp duty, selling-short costs, and bid-ask spread. Overall, we show that a relatively large number of small investors can enjoy momentum gains, providing some evidence against stock market efficiency. Copyright Swiss Society for Financial Market Research 2010

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    Article provided by Springer in its journal Financial Markets and Portfolio Management.

    Volume (Year): 24 (2010)
    Issue (Month): 2 (June)
    Pages: 171-192

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    Handle: RePEc:kap:fmktpm:v:24:y:2010:i:2:p:171-192
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    1. John M. Griffin & Xiuqing Ji & J. Spencer Martin, 2003. "Momentum Investing and Business Cycle Risk: Evidence from Pole to Pole," Journal of Finance, American Finance Association, vol. 58(6), pages 2515-2547, December.
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    7. Terrance Odean, 1998. "Are Investors Reluctant to Realize Their Losses?," Journal of Finance, American Finance Association, vol. 53(5), pages 1775-1798, October.
    8. Zhiwu Chen & Werner Stanzl & Masahiro Watanabe, 2002. "Price Impact Costs and the Limit of Arbitrage," Yale School of Management Working Papers ysm251, Yale School of Management, revised 08 Jun 2006.
    9. Fama, Eugene F & French, Kenneth R, 1996. " Multifactor Explanations of Asset Pricing Anomalies," Journal of Finance, American Finance Association, vol. 51(1), pages 55-84, March.
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