Security Market Line

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Security market line

Line representing the relationship between expected return and market risk or beta. The slope of this line is the risk premium for beta.

Security Market Line

The linear relationship between expected asset returns and betas posited by the Capital Asset Pricing Model.

Security Market Line

In Markowitz Portfolio Theory, a line on a chart representing the capital asset pricing model. The security market line plots risk versus expected return of the market. The security market line is a useful tool in determining whether a given security is undervalued and/or a market outperform. If a security plots the security market line, it indicates a higher expected return for a given level of risk than the market as a whole.

security market line

A line used to illustrate the relationship between risk and return for individual securities. The security market line shows a positive linear relationship between returns and systematic risk as measured by beta.
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