1
Win rate
Winning trades divided by total trades.
Lesson · Trading Risk Management
Win Rate, Average Win/Loss, and Expectancy
Combine win rate, average win, average loss, and trading costs to estimate the average outcome per trade.
Core concepts
What to understand
Keep the process direct: define the risk, calculate it, and enforce the limit.
2
Payoff ratio
Average win divided by average loss.
3
Expectancy
Expected average R or dollars per trade after losses and costs.
Interactive lab
Change the risk conditions
Adjust the controls and read the market behavior and account impact after each change.
Win Rate, Average Win/Loss, and Expectancy Lab
Synthetic educational data · no live market connection
RISK MODEL
Risk process
Apply it in order
Risk calculations should happen before the order is submitted.
Use enough trades
A small sample can produce unstable win-rate and payoff estimates.
Include all costs
Commissions, spread, slippage, and assignment effects reduce expectancy.
Evaluate the combination
Never judge a system from win rate alone.
Knowledge check
Check your understanding
Select one answer for each question. Feedback appears immediately.
1. A strategy wins 40% with +2R wins and -1R losses. Expectancy before costs is:
0.40 × 2R − 0.60 × 1R = +0.20R.
2. Why is win rate alone incomplete?
A high win rate can still lose money when losses are much larger than wins.
3. What do trading costs do to expectancy?
Costs subtract from the average outcome of every trade.
4. Average win 1.5R, average loss 1R, no costs. What is the breakeven win rate?
Breakeven = average loss ÷ (average win + average loss) = 1 ÷ (1.5 + 1) = 40%. Check: 0.40 × 1.5 − 0.60 × 1 = 0.
Practical rules
- Measure win rate and payoff together.
- Use net results after all known costs.
- Track expectancy by setup, timeframe, and regime.
Common mistakes
- Optimizing only for win rate.
- Using best-case targets instead of realized exits.
- Treating a 10-trade sample as stable evidence.
References
Official reading
The labs use simplified synthetic examples. These sources cover the underlying risk and execution concepts.
CME Group · System-Based vs. Discretionary Trading
Consistent execution is required to evaluate a trading method.