Beats win-rate illusion
A 70% win rate with tiny winners and big losers is a losing strategy. Expectancy makes that obvious immediately.
Win rate alone lies. Average win alone lies. Expectancy combines them into one number that says whether the strategy is net positive - in dollars per trade, or in R per trade.
Mathematically, the weighted average of your wins and losses.
Trading expectancy is the average result you can expect from a single trade, given how often you win, how big your wins are, how often you lose and how big your losses are. It is the cleanest one-line summary of an edge.
Formula: Expectancy = (W×A) - (L×B), where W is your win rate, A is the average win, L is your loss rate (1 - W), and B is the average loss (positive number). Expressed in R, the formula collapses to: average R per trade across your trade history. Tracker Fx computes both versions live from your real fills.
Expectancy pairs with profit factor and R-multiple. Together they tell you whether the strategy is real, how strongly it pays, and how each individual trade contributes. None of them are useful as backtest figures - they are useful as live metrics from your trading journal.
Same risk per trade (100 USD). Different combinations of win rate and average outcomes.
| Strategy | Win rate | Avg win / loss | Expectancy |
|---|---|---|---|
| High win rate | 70% | +50 / -100 | +5 USD/trade |
| Balanced | 50% | +150 / -100 | +25 USD/trade |
| Low win rate trend | 35% | +300 / -100 | +40 USD/trade |
| Losing | 55% | +80 / -120 | -10 USD/trade |
Most other stats can be flattered by selective trade-counting. Expectancy cannot.
A 70% win rate with tiny winners and big losers is a losing strategy. Expectancy makes that obvious immediately.
Expressed in dollars per trade, it tells you what to expect to make per click. Real numbers, not percentages.
Computed per setup, expectancy ranks playbooks by edge. The losers stop hiding behind the winners.
Expectancy x trade count says how much you should expect to make. Real drawdown reveals how bumpy that path is.
A live expectancy that turns negative is the clearest signal to pause the strategy until the cause is understood.
The expectancy that matters is the one calculated from your real fills, including the bad ones you would rather skip.
The metrics that sit around expectancy in any serious trader's toolkit.
The ratio companion - gross win over gross loss.
Read →The per-trade unit that expectancy averages over.
Read →Expectancy without drawdown is half the conversation.
Read →What makes an edge real and the metrics that prove it.
Read →The planned ratio that, paired with win rate, drives expectancy.
Open →Expectancy calculated live from your real broker fills.
Read →Everything worth knowing about trading expectancy.
Trading expectancy is the average outcome you can expect from a trade given your win rate and your average win and loss. A positive expectancy means the strategy makes money over many trades. A negative expectancy means it loses money.
Expectancy = (win rate x average win) - (loss rate x average loss). The result is the expected profit or loss per trade in dollars or in R. Tracker Fx calculates it automatically from your real broker fills.
Any positive number means an edge. In R, +0.2R per trade across hundreds of trades is solid. +0.5R is excellent. In dollars, the answer depends on risk per trade - on 100 USD risk, a +0.2R average is +20 USD per trade.
Win rate alone is misleading. A 70% win rate with average wins half the size of average losses is a losing strategy. Expectancy combines win rate, average win and average loss into one number that tells the truth.
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