| Alpha |
 1. A measure of a mutual fund's risk relative to the market. The formula for alpha is the following:
[ (sum of y) - ((b)(sum of x)) ] / n
Where: n = number of observations (36 mos.) b = beta of the fund x = rate of return for the market y = rate of return for the fund
2. The abnormal rate of return on a security or portfolio in excess of what would be predicted by an equilibrium model like the Capital Asset Pricing Model (CAPM).
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1. An alpha of 1.0 means the fund outperformed the market 1.0%. A positive alpha is the extra return awarded to the investor for taking additional risk rather than accepting the market return.
2. If a CAPM analysis estimates that a portfolio should earn 10% based on the risk of the portfolio but the portfolio actually earns 15%, then the alpha of the portfolio would be 5%. This 5% is the excess return over what was predicted in the CAPM model.
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