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Home » Forex Glossary » RSI | Relative Strength Index

RSI | Relative Strength Index

An index used by investors to determine whether a particular security is being overbought or oversold. The index is calculated using empirical records of the security’s recent gains and recent losses. The index varies between 0 and 100. If RSI is above 70, the security is deemed to be overbought/overvalued. If RSI is below 30, the security is deemed to be oversold/undervalued.