DEFINITION of 'Treynor Ratio'
A ratio developed by Jack Treynor that measures returns earned in excess of that which could have been earned on a riskless investment per each unit of market risk.
The Treynor ratio is calculated as:
(Average Return of the Portfolio  Average Return of the RiskFree Rate) / Beta of the Portfolio
INVESTOPEDIA EXPLAINS 'Treynor Ratio'
In other words, the Treynor ratio is a riskadjusted measure of return based on systematic risk. It is similar to the Sharpe ratio, with the difference being that the Treynor ratio uses beta as the measurement of volatility.
Also known as the "rewardtovolatility ratio".
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Sharpe Ratio
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RELATED FAQS

What is the difference between a Sharpe ratio and a Traynor ratio?
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A linear exposure in the valueatrisk, or VaR, calculation is represented by positions in stocks, bonds, commodities or ... Read Full Answer >> 
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Investing in the aerospace sector is riskier than investing in the broader market. The most accurate measure of sector volatility, ... Read Full Answer >> 
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