Only Three Other Occurrences Since 2002
The True Strength Index (TSI) is a momentum oscillator based on a double smoothing of price changes. As shown in the monthly S&P 500 graph below, a positive momentum crossover (black moves above red) has only occurred four times since 2002. In the three previous cases, the S&P 500 rallied for a long period of time after the crossover; the average gain was 52%.
