Examlex
Buying a book online at Amazon is an example of social commerce.
Betas
An evaluation measure for the volatility or inherent risk present in a security or portfolio in comparison to the total market.
Treynor Measure
A performance metric for determining how well an investment compensates the investor for taking risk, calculated as the excess return over the risk-free rate relative to the beta of the portfolio.
Beta
A means to evaluate the fluctuation, or inherent risk, of a security or portfolio against the aggregate market.
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