Robustness checks: what does it take for you to trust a backtest?

A single backtest is a claim; a trusted one has survived abuse: different periods, changed parameters, added costs, shuffled trades. Each check that survives raises the confidence.

What's your battery of checks?

• the tests you run before trusting results
• how you handle parameter sensitivity
• the strategy that passed everything and still failed

The expectancy guide sets the statistical baseline.