Backtesting Methodology Errors

Overfitting

These errors emerge when a trading model incorporates excessive noise from historical cryptocurrency price action, leading to a strategy that performs flawlessly on past data but fails to generalize to live markets. Analysts often mistake random market fluctuations for predictive alpha, resulting in rigid parameters that collapse under the pressure of real-time volatility. This technical failure signifies a disconnect between statistical performance and the actual microstructure of digital asset exchanges.