Market Basics
Backtesting is testing a trading strategy against historical data to see how it would have performed, including returns, drawdowns, and risk. It validates an idea before risking capital but cannot guarantee future results.
Backtesting runs a defined set of trading rules over past market data to estimate how the strategy would have behaved, producing metrics such as returns, drawdown, and risk diagnostics. It turns a trading idea into something measurable before any capital is committed.
For a bullion trader, backtesting is where a seasonal, trend, or mean-reversion idea earns or loses credibility. Inspecting drawdown and consistency, not just headline returns, helps judge whether a rule is robust or merely fit to one favorable stretch of history.
Backtests are vulnerable to overfitting, and they cannot capture every real-world cost, slippage, or future regime change. A strong historical result is evidence to scrutinize, not a guarantee, and live performance can drift from the backtest, so results are communicated responsibly with their assumptions attached.
Put it to work
See also
Educational reference only. Definitions describe how traders use these concepts and are not investment advice or a recommendation to trade.
