A 90% win rate tells you nothing on its own.

Expectancy = (win rate x average win) minus (loss rate x average loss).

At 90% wins you still lose money the moment your average loss is more than 9 times your average win. That is exactly what happens when you cut winners early and let losers run.

Most traders can quote their win rate instantly and have no idea what their payoff ratio is. One of those numbers decides whether you survive. It is not the first one.

What is yours?

$BTC