Before you risk a single penny of real money on a trading strategy, you should already know approximately how often it wins, how much it makes when it wins, how much it loses when it loses, and what your expected return per trade is. Backtesting gives you these numbers.
Backtesting is the process of taking your trading rules and applying them to historical price data. You scroll through past charts, candle by candle, and every time your entry criteria are met, you record the trade as if you'd taken it — entry price, stop loss, target, outcome. Over hundreds of setups, a statistical picture emerges.
This picture is your edge — or the absence of one. Some traders backtest their system and discover it's profitable. Others discover it breaks even or loses money. Both are valuable results, because the trader who discovers a losing system on historical data has just saved themselves months of real losses.
The numbers you're looking for are win rate (what percentage of trades are profitable), average reward-to-risk (how much you make on winners vs how much you lose on losers), and expectancy (the average profit per trade across all trades). A system that wins 50% of the time with a 2:1 reward-to-risk ratio has a positive expectancy — and that's all you need.
The most underappreciated benefit of backtesting is psychological. When you've seen your system work across 300 historical trades, following the rules during a live losing streak becomes much easier. You have evidence — hard data — that the system works over time. That evidence is what keeps you disciplined when three trades in a row go against you.
Yes, it's boring. Yes, it takes hours. No, there's no shortcut. But every hour spent backtesting saves you from weeks of expensive trial and error with real money. Think of it as the cheapest education in trading.
The Snapback Method's self-study programme includes a full backtesting module with detailed instructions on how to test the system yourself. Trust the system because you've verified it. Launching 14th April — thesnapbackmethod.com.