Backtesting Market-Neutral Strategies

Core idea

A market-neutral backtest should use point-in-time data, out-of-sample validation, realistic borrow and funding, executable prices, and turnover-aware costs. The test should reproduce how signals and positions would have been known at each date.

Implementation

Robustness across windows, regimes, and cost assumptions matters more than a single optimized result.

Primary risk

Leakage, survivorship bias, overfitting, and understated costs can turn noise into an impressive equity curve.

Frequently asked questions

What is backtesting market-neutral strategies?

A market-neutral backtest should use point-in-time data, out-of-sample validation, realistic borrow and funding, executable prices, and turnover-aware costs. The test should reproduce how signals and positions would have been known at each date.

What is the main risk of backtesting market-neutral strategies?

Leakage, survivorship bias, overfitting, and understated costs can turn noise into an impressive equity curve.