Papi's Backtest Check sanity-checks your trading backtests for lookahead bias, overfitting, missing fees and slippage, and thin sample size, before real money finds the flaws. Plus a free PremarketPapi premarket brief every trading day.
Get early access and a discount on your first report.
Flags lookahead bias, data leakage, and curve-fit parameters that make bad strategies look brilliant.
We check whether fees, slippage, and spreads are modeled, and show how fragile your edge is once they are.
Trade count, regime coverage, and time span checks tell you if your results are signal or luck.
Your backtest results (trade log CSV, and optionally your strategy settings).
Automated checks for bias, overfitting, cost assumptions, and sample size.
In minutes: a clear pass/warn/fail list with plain-English explanations and fixes.
Final price depends on report depth.
A premarket brief in your inbox before the open.
Full premarket brief every weekday:
Educational only, not financial advice.
Get early access and a discount on your first report.
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