A risk-adjusted performance measure that calculates excess return per unit of risk, computed by dividing the difference between portfolio return and risk-free rate by the portfolio's standard deviation. Higher ratios indicate better risk-adjusted performance.
Named after Nobel laureate William F. Sharpe who developed it in 1966. 'Ratio' from Latin 'ratio' meaning calculation or proportion. The measure became fundamental to modern portfolio theory and investment performance evaluation.
The Sharpe ratio is like a 'bang for your buck' measure in investing - it doesn't just ask 'how much did you make?' but 'how much risk did you take to make it?' A boring Treasury bill might beat a volatile hedge fund on a risk-adjusted basis, even with lower absolute returns!
Named after William Sharpe (1966). Financial metrics historically bore men's names as convention; women contributors in portfolio theory (e.g., Hilda Geiringer, Hertha Ahlström) remain largely uncredited.
Use the metric name accurately; consider crediting women's foundational work in risk theory and optimization when discussing history of modern portfolio theory.
Women mathematicians and economists made crucial early contributions to risk-return analysis frameworks that underpin the Sharpe ratio; their work deserves recognition alongside male theorists.
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