How to read a strategy's expectancy

What a strategy's expectancy is

A strategy's expectancy is the average profit or loss per trade after costs, over many trades. Learning to read it is about interpreting the on-chain and chart data that reveals it.

The signals that matter

When you are reading a strategy's expectancy, these are the concrete signals to focus on:

• Win rate combined with average win/loss size
• Costs (fees, slippage) dragging results
• A large enough sample to trust
• Big winners offsetting many small losers
• Negative expectancy hidden by a high win rate

Where to look

You will mostly observe a strategy's expectancy in your trade journal and the math of wins, losses, and costs. To read it correctly, go straight to these sources rather than relying on chat or hype.

To read it correctly: the steps

1. Open the right data source for this signal.
2. Interpret each field in context rather than in isolation.
3. Cross-reference with a second source to confirm.
4. Translate the reading into a clear go/skip/exit decision.

The mistake almost everyone makes

Turning the read into action

Spotting it is only half the job — acting on it under time pressure is the other half. The conditions around a strategy's expectancy can change in seconds, which is why many traders pair their own reads with real-time alerts that watch continuously and ping the moment something lines up.