Every quant has been there. You’re backtesting a strategy, the overall results look good, but something feels off when you dig into the day-by-day breakdown. You keep digging while your gut says “this feels like data mining,” but the statistics keep pointing to the same uncomfortable truth – some trading days are just bad for business. That’s where I found myself...
Refining The 0DTE SPX Breakout Strategy with Evidence-Based Exclusions (2.2 Sharpe)
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