We graded 13 famous trading strategies on 6 years of data. All 13 failed.

In a surprising revelation, a rigorous analysis of 13 popular trading strategies over six years showed that none of them performed as expected. Often touted for their intuitive appeal and promising backtests, strategies like RSI mean-reversion and the golden cross fell flat when tested against real-world market data. This underscores the importance of honest, unbiased testing in evaluating trading strategies, suggesting that many popular methods may not hold up under practical conditions. The findings call for a reevaluation of how trading strategies are developed and taught.