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Security characteristic line

From Wikipedia, the free encyclopedia

Security characteristic linePositive abnormal return (α): Above-average returns that cannot be explained as compensation for added riskNegative abnormal returns (α): Below-average returns that cannot be explained by below-market risk
Security characteristic line

Positive abnormal return (α): Above-average returns that cannot be explained as compensation for added risk

Negative abnormal returns (α): Below-average returns that cannot be explained by below-market risk

Security characteristic line (SCL) is a regression line,[1] plotting performance of a particular security or portfolio against that of the market portfolio at every point in time. The SCL is plotted on a graph where the Y-axis is the excess return on a security over the risk-free return and the X-axis is the excess return of the market in general. The slope of the SCL is the security's beta, and the intercept is its alpha.[2]

Formula

where:

αi is called the asset's alpha (abnormal return)
βi(RM,tRf) is a nondiversifiable or systematic risk
εi,t is the non-systematic or diversifiable, non-market or idiosyncratic risk
RM,t is the return to market portfolio
Rf is a risk-free rate

See also

References

External links

This page was last edited on 7 November 2018, at 09:16
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