Globally Evolutionarily Stable Portfolio Rules

Igor Evstigneev, Thorsten Hens () and Klaus Schenk-Hoppé
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Thorsten Hens: Institute for Empirical Research in Economics, University of Zurich, Postal: University of Zurich, Institute for Empirical Research in Economics, Blümlisalpstrasse 10, 8006 Zürich, Switzerland, http://www.iew.unizh.ch/home/hens/CV.pdf

No 2005/17, Discussion Papers from Norwegian School of Economics, Department of Business and Management Science

Abstract: The paper examines a dynamic model of a financial market with endogenous asset prices determined by short run equilibrium of supply and demand. Assets pay dividends, that are partially consumed and partially reinvested. The traders use fixed-mix investment strategies (portfolio rules), distributing their wealth between assets in fixed proportions. Our main goal is to identify globally evolutionarily stable strategies, allowing an investor to “survive,” i.e., to accumulate in the long run a positive share of market wealth, regardless of the initial state of the market. It is shown that there is a unique portfolio rule with this property—an analogue of the famous Kelly (1956) rule of “betting one’s beliefs.”

Keywords: Evolutionary Finance; Wealth Dynamics; Survival and Extinction of Portfolio Rules; Evolutionary Stability; Kelly Rule (search for similar items in EconPapers)
JEL-codes: C61 C62 G11 (search for similar items in EconPapers)
Pages: 33 pages
Date: 2005-12-22
New Economics Papers: this item is included in nep-evo and nep-fin
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Journal Article: Globally evolutionarily stable portfolio rules (2008)
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