Losing Streaks
Why consecutive losses occur even with a positive expectancy, and how risk sizing affects survival through them.
Losses cluster
Even a strategy with a positive historical win rate can produce several consecutive losses. Random sequences do not alternate neatly between wins and losses, so a trader needs enough capital and emotional tolerance to survive ordinary variance.
Win rate does not tell you the next outcome
A 60% historical win rate does not mean every block of ten trades will contain exactly six winners. Short samples can look dramatically better or worse than the long-run average.
Risk size determines streak damage
Ten consecutive losses at a small fraction of equity are very different from ten losses taken with aggressive exposure. Compounding also means percentage-based risk naturally reduces dollar exposure as equity falls.
Responding to a streak
- Check whether trades followed the written setup.
- Compare current market conditions with the strategy's tested environment.
- Review execution and slippage.
- Avoid increasing size solely to recover losses.
- Use predefined drawdown or pause rules rather than improvising.