Framework
Capital asset pricing model (CAPM)
The question it answers
When valuing a share or project, what return should an investor or CFO require to cover the risk-free rate and the market risk (beta) the asset carries?
- Origin
- Sharpe (1964); Lintner (1965); Mossin (1966); critique in Roll (1977)
- Diagram type
- Hub diagram
- Level of analysis
- Individual
- Topics
- Corporate finance

Diagram
Capital asset pricing model (CAPM)
Required return
Risk-free rate
Beta
Market risk premium
Roll's critique: true market portfolio is unobservable
Sources
References
Listed A–Z by author surname, Harvard style. A source with a DOI links to https://doi.org/…; one without links to its page or says plainly that it has no DOI.
- Lintner, J. (1965) ‘The valuation of risk assets and the selection of risky investments in stock portfolios and capital budgets’, Review of Economics and Statistics, 47(1), pp. 13–37.doi:10.2307/1924119Source page
- Mossin, J. (1966) ‘Equilibrium in a capital asset market’, Econometrica, 34(4), pp. 768–783.doi:10.2307/1910098Source page
- Roll, R. (1977) ‘A critique of the asset pricing theory's tests, part I: on past and potential testability of the theory’, Journal of Financial Economics, 4(2), pp. 129–176.doi:10.1016/0304-405x(77)90009-5Source page
- Sharpe, W.F. (1964) ‘Capital asset prices: a theory of market equilibrium under conditions of risk’, Journal of Finance, 19(3), pp. 425–442.doi:10.2307/2977928Source page