Backtesting Frameworks Build robust, production-grade backtesting systems that avoid common pitfalls and produce reliable strategy performance estimates. When to Use This Skill - Developing trading strategy backtests - Building backtesting infrastructure - Validating strategy performance - Avoiding common backtesting biases - Implementing walk-forward analysis - Comparing strategy alternatives Core Concepts 1. Backtesting Biases | Bias | Description | Mitigation | |------|-------------|------------| | Look-ahead | Using future information | Point-in-time data | | Survivorship | Only testing o…