Win Rate vs Profit Factor: Which Metric Really Matters?

Win rate is the first number most traders look at, and the most misleading one on its own. A 70% win rate can lose money. A 35% win rate can make a lot. To know whether you have an edge, you need to see how much you win when you win, compared with how much you lose when you lose.

Win rate

Win rate = Winning trades ÷ Total trades

It tells you how often you are right. It says nothing about the size of wins and losses.

Profit factor

Profit factor = Gross profit ÷ Gross loss

Gross profit is the sum of all winning trades; gross loss is the sum of all losing trades, as a positive number. A profit factor above 1 means you made money; below 1, you lost. See profit factor explained.

How they connect

Profit factor combines win rate and payoff:

Profit factor = (Win rate × Average win) ÷ (Loss rate × Average loss)

So the same profit factor can come from very different styles:

All three have a similar edge. Their win rates could hardly be more different.

Why win rate misleads

• It is easy to raise win rate by taking small profits and holding losers. That lowers profitability. See loss aversion.
• A high win rate can hide rare, very large losses, as with some short option strategies.
• Traders often compare their win rate with others', but the number only makes sense with the payoff ratio next to it.

Which should you watch?

Watch both, plus expectancy, which tells you what an average trade earns. A practical reading:

• Profit factor tells you whether you have an edge, and how strong it is.
• Win rate and average win vs average loss tell you how your edge is built, and where to improve.
• Expectancy tells you what each trade is worth.

In TradeThink

The statistics page shows win rate, profit factor, average win, average loss and expectancy together, and metric history charts how each one changes over time. Filter by setup to see which setups carry your edge.