Engineering Alpha

Engineering Alpha

Why RSI Works Sometimes and What That Actually Means

Another Interesting Question to Ask Ourselves

Sofien Kaabar, CFA's avatar
Sofien Kaabar, CFA
Apr 09, 2026
∙ Paid

The Relative Strength Index, or RSI, is one of the most widely used technical indicators in trading. It is often treated as a self-contained source of predictive power, with oversold readings interpreted as buy signals and overbought readings interpreted as sell signals.

This view is simplistic and often misleading. RSI does not possess independent fore…

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