TradingChart[{"MSFT",{{2009,1,1},{2009,3,31}}},{"RelativeStrengthIndex"}]

({{DocumentationFooterIconsRelatedFunction.png, ({{See Also}, {Related Indicator Types:  (RefLink[RelativeMomentumIndex, paclet:ref/indicator/RelativeMomentumIndex])  ▪  (RefLink[RelativeVolatilityIndex, paclet:ref/indicator/RelativeVolatilityIndex])  ▪  (RefLink[RateOfChange, paclet:ref/indicator/RateOfChange])  ▪  (RefLink[WilliamsPercentR, paclet:ref/indicator/WilliamsPercentR])}})}})