backtest-expert

Systematic approach to backtesting trading strategies based on professional methodology that prioritizes robustness over optimistic results. Goal : Find strategies that "break the least", not strategies that "profit the most" on paper. Principle : Add friction, stress test assumptions, and see what survives. If a strategy holds up under pessimistic conditions, it's more likely to work in live trading. Use this skill when: Define the edge in one sentence. Example : "Stocks that gap up >3% on earnings and pull back to previous day's close within first hour provide mean-reversion opportunity." If you can't articulate the edge clearly, don't proceed to testing. Define with complete specificity: Critical : No subjective judgment allowed. Every decision must be rule-based and unambiguous.