backtesting

A backtest can be mathematically correct and still overstate what a live trading bot can achieve. The difference usually comes from information leakage, unrealistic execution or a strategy tuned too closely to one historical period. Data can leak the future Look-ahead bias occurs when a...

A credible trading-bot discussion includes methodology, realistic costs and failure conditions. Screenshots of profit alone are not enough to evaluate a strategy. Strategy definition Market, instruments and time frame Entry, exit and position-sizing rules Data source and test period Fees...