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Wealth dynamics and a bias toward momentum trading

  • LeBaron, Blake

Evolutionary metaphors have been prominent in both economics and finance. They are often used as basic foundations for rational behavior and efficient markets. Theoretically, a mechanism which selects for rational investors requires many caveats, and is far from generic. This paper tests wealth based evolution in a simple, stylized agent-based financial market. The setup borrows extensively from current research in finance that considers optimal behavior with some amount of return predictability. In the case of utility functions which differ from log, wealth selection alone converges to parameters which are economically far from the optimal forecast parameters. This serves as a strong reminder that wealth selection and utility maximization are not the same thing. Therefore, suboptimal financial forecasting strategies may be difficult to drive out of a market, and may even do quite well for some time.

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Article provided by Elsevier in its journal Finance Research Letters.

Volume (Year): 9 (2012)
Issue (Month): 1 ()
Pages: 21-28

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Handle: RePEc:eee:finlet:v:9:y:2012:i:1:p:21-28
Contact details of provider: Web page: http://www.elsevier.com/locate/frl

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  2. Evstigneev, Igor V. & Hens, Thorsten & Schenk-Hoppé, Klaus Reiner, 2008. "Globally evolutionarily stable portfolio rules," Journal of Economic Theory, Elsevier, vol. 140(1), pages 197-228, May.
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