The Relative Strength Index (RSI) is a well versed momentum based oscillator which is used to measure the speed (velocity) as well as the change (magnitude) of directional price movements. Essentially the RSI, when graphed, provides a visual mean to monitor both the current, as well as historical, strength and weakness of a particular market. The Relative Strength Index (RSI) can be useful in a variety of different ways. It can be used to confirm a new trend (with a move from below 50% to above 50%, or vice versa), to suggest when a given move may be getting overbought (above 70%) or oversold (below 30%) and also when a potential price reversal may be possible (bullish divergence or bearish divergence). Relative Strength Index - RSI: The relative strength index (RSI) is a momentum indicator developed by noted technical analyst Welles Wilder, that compares the magnitude of recent gains and losses