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[Info] [Info] Win rate, R:R, profit factor, Sharpe explained

大EADesk MasterStaff2026. 11. 04. 04:51Views 70Up 12Comments 0

If the wall of numbers on an EA or copy trader page leaves you unsure what to look at, these five are all you need.

1. Win rate

  • Winning trades ÷ all trades
  • Meaningless on its own. A 90% win rate still loses money if the losses are huge.

2. Reward:risk

  • Average win ÷ average loss
  • Read it with win rate. Break-even win rate = 1 ÷ (1 + R:R)
  • R:R 1 → profitable above 50%
  • R:R 2 → profitable above 33%
  • R:R 0.2 → needs 83%+ to profit (common in martingale EAs)

3. Profit factor

  • Gross profit ÷ gross loss
  • Below 1.0: losing system / 1.3–2.0: decent / 3+: suspicious — short sample or overfitting
  • Trust it once there are 100+ trades.

4. Sharpe ratio

  • Return ÷ volatility of returns: how calmly the same return was earned.
  • Annualized, above 1 is generally good, above 2 excellent.
  • Strategies that postpone losses, like martingale and grid, can show unrealistically high Sharpe.

5. Recovery factor

  • Net profit ÷ max drawdown amount
  • Above 3 means it earned plenty relative to its drawdown.

Read them in combination

PatternWhat it means
High win rate + low R:R + small drawdownFine so far, but suspect martingale or grid
40% win rate + R:R 2.5 + PF 1.6Trend-following; frequent losing months are normal
PF 4 + 30 tradesToo small a sample; hold judgment
EADesk cards show total return, max drawdown, win rate, track record and risk score together. Don't judge on one number — read the combination.

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