Risk return ratio
The risk–return ratio is a measure of return of investment in terms of risk for a specific time period. The percentage return (R) for the time period is measured in a straightforward way: R = P e n d − P s t a r t P s t a r t {\displaystyle R={\frac {P_{end}-P_{start}}{P_{start}}}} where P s t a r t {\displaystyle P_{start}} and P e n d {\displaystyle P_{end}} simply refer to the price by the start and end of the time period.