A Sharpe ratio is notable risk management metric in finance that ascertains the ratio of risk to rate of return as a quotient of rx - Rf and StdDev (x) where rx is the average rate of return, Rf is the best possible rate of return for a risk-free asset, and StD Dev is the standard deviation of the return as postulated within the following formula:
The Sharpe ratio was first proposed by its namesake William F. Sharpe, Nobel Laureate and STANCO 25 professor of Finance, Emeritus at Stanford University’s Graduate School of Business in his book, Portfolio Theory and Capital Markets where he expounds upon the application of his metric and its utility in the CAPM for which Merton Miller, he, and Harry Markowitz won a nobel prize in 1990 as integral proponents of quantitative finance.
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