Abstract
In the linear market-index model of the return-generating process, return on security j is given bywhere αj and βj are constants characteristic of company j, is return on a market index, and is the company-specific component of return such that and . The coefficient βj is given by . It is known as market responsiveness, volatility, systematic risk, and, more commonly, simply as “beta.” It has been widely accepted as a measure of nondiversifiable risk and incorporated in popular performance measures. Many stock information services now provide estimates of beta.
Citations in this library
Stored only when both papers are in the corpus — 294 citations exist upstream.
References
1964CAPITAL ASSET PRICES: A THEORY OF MARKET EQUILIBRIUM UNDER CONDITIONS OF RISK*1973Risk, Return, and Equilibrium: Empirical Tests1975THE VALUATION OF RISK ASSETS AND THE SELECTION OF RISKY INVESTMENTS IN STOCK PORTFOLIOS AND CAPITAL BUDGETS**This paper is another in a series of interrelated theoretical and statistical studies of corporate financial and investment policies being made under grants from the Rockefeller Foundation, and more recently the Ford Foundation, to the Harvard Business School. The generous support for this work is most gratefully acknowledged. The author is also much indebted to his colleagues Professors Bishop, Christenson, Kahr, Raiffa, and (especially) Schlaifer, for extensive discussion and commentary on an earlier draft of this paper; but responsibility for any errors or imperfections remains strictly his own.[Professor Sharpe's paper, “Capital Asset Prices: A Theory of Market Equilibrium Under Conditions of Risk” (Journal of Finance, September 1964) appeared after this paper was in final form and on its way to the printers. My first section, which parallels the first half of his paper (with corresponding conclusions), sets the algebraic framework for sections II, III and VI, (which have no counterpart in his paper) and for section IV on the equilibrium prices of risk assets, concerning which our results differ significantly for reasons which will be explored elsewhere. Sharpe does not take up the capital budgeting problem developed in section V below.]1972Portfolio Theory and Capital Markets.1969Risk, The Pricing of Capital Assets, and The Evaluation of Investment Portfolios1973Studies in the Theory of Capital Markets.1971ON THE ASSESSMENT OF RISK1973A NEW LOOK AT THE CAPITAL ASSET PRICING MODEL