Definition

Understand how often your trades finish in profit.

Formula. Winning closed trades ÷ all closed trades × 100. Break-even trades stay in the denominator. Open trades are excluded.

Two accounts, same win rate, opposite outcomes

Win rate ranked these identically. Payoff decided them.
AccountWin rateAverage winAverage lossNet over 100 trades
A60%$100$200−$2,000
B60%$200$100+$8,000
C35%$400$120+$6,200

How it goes wrong

Ignoring break-even trades
Orderblock keeps break-even trades in the denominator and counts them separately. A tool that drops them inflates win rate by an amount that varies with your style.
Including open positions
Win rate is computed from closed trades only. Counting a favourable open position as a win is how a losing month looks like a winning one.
Optimising for it
Win rate is the easiest metric to improve and the easiest to improve destructively: hold losers longer and take profits earlier and it rises while expectancy falls.

Questions

What is a good win rate?

There is no good win rate independent of payoff. A 35% win rate with a 3:1 reward-to-risk ratio is strongly profitable; an 80% win rate with a 1:5 ratio is not. Judge the pair, never the percentage.

Does a high win rate mean low risk?

Often the opposite. High win rates frequently come from strategies that let losses run, which concentrates risk into rare, large drawdowns that a win-rate figure cannot show.