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Profit Factor is one of the most reliable metrics for evaluating the raw efficiency of a trading system or portfolio strategy. It strips away complex compounding mathematics to answer a fundamental question: For every single rupee this strategy lost, how many did it bring in?

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The Formula

The calculation isolates your absolute upside versus your absolute downside over a specific testing window: Profit Factor=Gross ProfitGross Loss\text{Profit Factor} = \frac{\text{Gross Profit}}{\text{Gross Loss}}

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Evaluating Your Score

Unlike total return metrics, which can be skewed by a single massive winner, the Profit Factor gives you a clear look at your strategy’s structural consistency.
Profit Factor RangeClassificationTactical Reality
Below 1.0UnprofitableThe strategy is losing capital. The cost of losing trades completely eclipses all gains.
1.0 to 1.49Moderately ProfitableThe system breaks even or makes a small profit, but is highly vulnerable to transaction costs and slippage.
1.5 to 2.0Strongly ProfitableThe institutional sweet spot. The strategy generates robust alpha with a healthy margin of safety.
Above 2.0Exceptionally ProfitableHighly efficient system. Note: Double-check for overfitting or lookahead bias if backtesting smooth data.
Strategic Rule: A strategy with a Profit Factor of 1.75 means that if your losing trades collectively lost ₹1,00,000, your winning trades pulled in ₹1,75,000 over the exact same period.