The Capital Asset Pricing Model in the 21st Century

1. Overview; 2. Expected utility theory; 3. Expected utility and investment decision rules; 4. The mean-variance rule; 5. The capital asset pricing model (CAPM); 6. Extensions of the CAPM; 7. The CAPM cannot be rejected: empirical and experimental evidence; 8. Theoretical and empirical criticisms of the M-V rule; 9. Prospect theory and expected utility; 10. Cumulative decision weights: no dominance violation; 11. M-V rule, the CAPM, and the cumulative prospect theory: coexistence.

'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 'Levy's book should be required reading for anyone who wants to learn about asset pricing; it is also an essential reference for anyone who wants to contribute to the immense literature in the field, the most important subject in the entire field of finance.' Richard Roll, University of California, Los Angeles 'Here in one volume is a presentation, analysis, and discussion of some of the key pillars of modern financial theory: mean-variance analysis, the capital asset pricing model, expected utility theory, and cumulative prospect theory. Haim Levy presents each theory carefully and completely, discusses the relevant arguments and evidence, and argues convincingly that practitioners and academics should adopt a synthesis that incorporates major elements of these approaches. A real tour de force from one of the major contributors to the field.' William F. Sharpe, Nobel Laureate, Stanford University