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The relative strength index (RSI) is a momentum indicator used in technical analysis that measures the magnitude of recent price changes to evaluate overbought or oversold conditions in the price of a stock or other asset.

How calculated

Relative Strength Index Tehcnical Indicator is calculated daily at the end of the day on MarketXLS servers. The default time period if you do not use any optional period as the second argument is 14. But you can change the time period used for calculation by passing the second argument like =RelativeStrengthindex("MSFT",20) .This technical indicator is calculated on MarketXLS server using the Close Price of the day. It is based on the EOD Prices. The Indicators refreshes at around 5PM EST after markets close

Example usage

=RelativeStrengthIndex("MSFT") - Returns the 14 day RSI for MSFT
=RelativeStrengthIndex("MSFT",20) - Returns the 20 day RSI for MSFT. Similarly you can get x day RSI.
=RelativeStrengthIndex("MSFT",20,"9/1/2021") - Returns RelativeStrengthIndex value for 20 day period with start date 1 September 2021


An RSI reading of 30 or below indicates an oversold or undervalued condition.


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