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What our own tests taught us
Studies of well-known rules, run the same strict way as yours, with the numbers and the caveats. Including the ones that failed, which is most of them.
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Does the golden cross work? We tested it
The 50/200-day crossover made money per trade on years it never saw, and still did worse than holding the same stocks in most of them.
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Why most backtests lie: overfitting, costs and luck
Three ways a backtest flatters a rule, with examples from our own studies, and five questions to ask before you trust one.
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