Behavior patterns of investment strategies under Roy's safety-first principle
AbstractThe safety-first principle is a natural motivational factor in decision making, and is closely related to certain popular heuristics such as satisficing. We provide a systematic analysis of optimal portfolio choice under Roy's safety-first principle by examining and comparing the behavior patterns of three popular investment strategies: the optimal constant-rebalanced portfolio, dynamic-rebalanced portfolio and buy-and-hold strategies. Our results indicate the importance of a match between the investment strategy, the investment goal, and the investment horizon. We also develop a geometric approach to investigate the relationships among the safety-first, expected utility, and mean-variance models and offer an explanation for the long-standing debate concerning different patterns of time-diversification effects.
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Bibliographic InfoArticle provided by Elsevier in its journal The Quarterly Review of Economics and Finance.
Volume (Year): 50 (2010)
Issue (Month): 2 (May)
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Web page: http://www.elsevier.com/locate/inca/620167
Continuous-time portfolio selection Safety-first principle Investment strategies Horizon effects Efficient frontier;
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