The Capital Asset Pricing Model in the 21st Century - Levy, Haim
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The Capital Asset Pricing Model (CAPM) and the mean-variance (M-V) rule, which are based on classic expected utility theory, have been heavily criticized theoretically and empirically. The advent of behavioral economics, prospect theory and other psychology-minded approaches in finance challenges the rational investor model from which CAPM and M-V derive. Haim Levy argues that the tension between the classic financial models and behavioral economics approaches is more apparent than real. This book aims to relax the tension between the two paradigms. Specifically, Professor Levy shows that…mehr

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Produktbeschreibung
The Capital Asset Pricing Model (CAPM) and the mean-variance (M-V) rule, which are based on classic expected utility theory, have been heavily criticized theoretically and empirically. The advent of behavioral economics, prospect theory and other psychology-minded approaches in finance challenges the rational investor model from which CAPM and M-V derive. Haim Levy argues that the tension between the classic financial models and behavioral economics approaches is more apparent than real. This book aims to relax the tension between the two paradigms. Specifically, Professor Levy shows that although behavioral economics contradicts aspects of expected utility theory, CAPM and M-V are intact in both expected utility theory and cumulative prospect theory frameworks. There is furthermore no evidence to reject CAPM empirically when ex-ante parameters are employed. Professionals may thus comfortably teach and use CAPM and behavioral economics or cumulative prospect theory as coexisting paradigms. Behavioral economics and the classical models in finance, such as the Capital Asset Pricing Model (CAPM), seemingly contradict each other, creating a teaching and a research dilemma to professors in finance and economics. This tension is particularly strong for professors who teach both the CAPM and behavioral finance. This book bridges prospect theory and the classical models in finance to show that there is no contradiction between them.
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Autorenporträt
Haim Levy is Miles Robinson Professor of Business Administration at the Hebrew University of Jerusalem and Dean of the Academic Center of Law and Business, Israel. The author of hundreds of articles in leading academic journals and about twenty books, he has obtained the ranking of the most prolific researcher in finance in the world covering the forty years through 1986 and the most prolific researcher in finance in the world in the core sixteen finance journals covering the fifty-year period through 2005. A co-author with Nobel Laureates Harry Markowitz and Paul Samuelson, Professor Levy's major research contributions have been to the field of stochastic dominance, which sets forth the criteria for decision making under conditions of uncertainty, in both expected utility and prospect theory paradigms. He has also developed economic models for equilibrium asset pricing in an imperfect market. Professor Levy received the Hebrew University's Prize for Excellence in Research in 1996 and the Emet Prize in 2006. He has served as economic adviser to the Bank of Israel and held a University Professor position at the University of Florida and visiting academic positions at the University of California, Berkeley and the Wharton School, University of Pennsylvania. He received his Ph.D. from the Hebrew University in 1969 and has held a full professorship there since 1976.
Rezensionen
'Currently, trillions of dollars are managed with the aid of quantitative techniques. Major paradigms of quantitative finance include expected utility theory, mean-variance optimization, the closely-related capital asset pricing model, prospect theory, and (Professor Levy's own creation) stochastic dominance. In this book, Professor Levy presents a penetrating analysis of the relationships among these paradigms, often finding mutual support where others find only conflict.' Harry Markowitz, Nobel Laureate, University of California, San Diego