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Sharpe ratio

Sharpe ratio definition

Sharpe ratio is the ratio of the average return earned in excess of the risk-free rate per unit of volatility. Sharpe ratio helps investor understand the return an investment compared to its risk.

Sharpe ratio formula

sharpe ratio formula
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What is a good sharpe ratio

Good safe investment strategies generate Sharpe ratios between 1.0 and 2.0.

Sharpe Ratio Example

sharpe ratio example
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An investor has to choose between two investments with the investment performance displayed above. Although Investment 2 has a higher ending value than Investment 1, it has much higher volatility and drawdown than Investment 1. As a result, Investment’s 1 Sharpe Ratio is 3 times higher than Investment’s 2 Sharpe Ratio and hence for low risk investors the Investment 1 is preferred.

In the example during the half of 2013 till the end of 2013 Investment 2 dropped from $160,000 to $105,000 losing 35% of its value. On the other hand, Investment 1 biggest drawdown occurred in end of 2013 losing 4.5 of its value.

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