How Many Losses in a Row Can You Take? Risk per Trade and Losing Streaks
Every strategy has losing streaks. Most traders know that. Fewer know how long a normal one is, and that number is what your risk per trade should be built around.
How long a normal streak is
With a 50% win rate, a run of 7 or 8 losers is expected somewhere in a few hundred trades. At a 40% win rate (common for trend strategies with bigger winners), 8 or 9 in a row is expected.
Not "possible if unlucky". Expected. If your plan only survives 5 losses in a row, it doesn't survive.
What a streak costs
Eight losers in a row, risking a fixed percentage of current balance:
- 0.5% per trade: down about 3.9%
- 1% per trade: down about 7.7%
- 2% per trade: down about 14.9%
On a personal account, 7.7% is uncomfortable. 14.9% is the kind of hole that makes people start sizing up to get out of it, which is how a drawdown turns into a blown account.
Recovery isn't symmetric
Losses need bigger gains to undo:
- Down 10%: need +11% to get back
- Down 20%: need +25%
- Down 50%: need +100%
Small risk per trade keeps you in the part of that list where recovery is just "keep trading", not "need a miracle month".
On a prop firm account
Prop firms usually measure drawdown from the starting balance, so a fixed dollar risk is the honest way to count. With a 10% max drawdown:
- 2% per trade: 5 losers and you're out
- 1% per trade: 10 losers
- 0.5% per trade: 20 losers
Against a normal streak of 8, only one of those is comfortable. And that's before the daily limit, which can end things after three or four losers in one session.
Picking a number
Work backwards:
- Assume a streak of 10 losers. It will happen eventually.
- Decide how deep a drawdown you can sit through without changing the plan. For a prop challenge, that's well inside the max drawdown.
- Risk per trade = that depth ÷ 10.
Want to survive 10 losers and stay under 5% down? That's 0.5% per trade. That's why it keeps coming up in the prop firm sizing guide.
Keep the number fixed
The streak math only works if every trade risks the same amount. A "confident" trade at triple size in the middle of a streak is where most of the damage comes from.
Decide the percentage, then let the position size calculator turn it into lots for each stop. The lots change. The risk doesn't.