This paper attempts to provide a survey of asset-pricing models based on the principle of maximization of expected utility. I will begin my analysis by setting out a simplified, discrete-time version of the model that was developed independently by Lucas (1978) and Breeden (1979). Since those studies appeared, intertemporal general-equilibrium models have come to occupy an increasingly importan...

Most tests of asset pricing models address only the pricing predictions – perhaps because the portfolio choice predictions are obviously wrong. But how can asset-pricing theory be right if the portfolio choice theory on which it rests is wrong? This work builds and observes experimental markets in which risky and riskless assets are traded. Risk aversion is a robust phenomenon in experimental s...

Is Beta Dead?” (Wallace [1980]) and other recent articles have asked whether broad consequences, disastrous to modern investment technology, would result from misspecification of the Capital Asset Pricing Model (CAPM), or worse yet, from falsehood of the model. The criticisms have cited imprecise specification of the market portfolio as a misapplication of the CAPM, and have emphasized the diff...

The existence theorem of Allingham (Econometrica 59:1169–1174, 1991) for the capital asset pricing model (CAPM) is generalized to the case where agents have heterogeneous expectations on the return distribution and the mean-variance utility functions are quasiconcave. This result is built upon new conditions which are distinct from and weaker than the conditions imposed on the CAPM in the liter...

We show in any economy trading options, with investors having mean-variance preferences, that there are arbitrage opportunities resulting from negative prices for out of the money call options. The theoretical implication of this inconsistency is that mean-variance analysis is vacuous. The practical implications of this inconsistency are investigated by developing an option pricing model for a ...

This paper addresses about an approach that suggests for stock portfolio optimization using the combination of Adaptive Neuro-Fuzzy Inference System (ANFIS) and Capital Asset Pricing Model (CAPM). Stock portfolio optimization aims to determine which of the stocks to be added to a portfolio based on the investor’s needs, changing economic and market conditions. In order to construct an efficient...

A key result of the Capital Asset Pricing Model (CAPM) is that the market portfolio— the portfolio of all assets in which each asset’s weight is proportional to its total market capitalization—lies on the mean-variance-efficient frontier, the set of portfolios having mean-variance characteristics that cannot be improved upon. Therefore, the CAPM cannot be consistent with efficient frontiers for...

Two different methods are used to evaluate the performance of the consumption-based asset pricing models to explain the cross-section of expected stock returns in conditional moments: one is to scale the returns, and the other is to model time-varying factor loadings, using instrument variables. Maximum correlation portfolios are constructed to directly impose restrictions on the time-series in...

The Wharton Financial Institutions Center provides a multidisciplinary research approach to the problems and opportunities facing the financial services industry in its search for competitive excellence. The Center's research focuses on the issues related to managing risk at the firm level as well as ways to improve productivity and performance. The Center fosters the development of a community...

Capital Assets Pricing Model is used as a tool for the estimation of Investments in Capital Markets with the relation of Expected return and Risk on Securities. This study examines the applicability of CAPM on Pakistan Stock Markets and Karachi Stock Exchange being the main capital market of Pakistan is taken for the study. The analysis is done by taking a sample of 10 performing companies of 1...