Beta measures the volatility of a security or a portfolio relative to a market benchmark. Beta, represented by the Greek lowercase letter β, is also used in the formula for the weighted average ...

Beta measures a stock's volatility, the degree to which its price fluctuates in comparison to the overall stock market. That is a measurement of the stock's risk compared to that of the greater ...

if the market does 10%, it could return 5%. A stock with a beta of 1.5 is a high beta and could return 15%. As noted earlier, alpha measures the value a manager adds to a portfolio when adjusting ...