The automatic closing of your positions by the broker when your margin level drops too low — happens without warning.
A stop-out is the broker's emergency safety mechanism. When your margin level falls below a specific threshold (usually 50%-100%, depending on the broker), the broker starts closing your positions automatically — biggest loser first — until your margin level returns above the safe threshold.
Stop-outs are not the same as margin calls. A margin call is a WARNING ("add funds or we'll close your positions"). A stop-out is the action — the broker just liquidates without asking. Most modern brokers skip the warning step and go straight to stop-out, because price moves so fast that a warning would arrive too late.
Stop-outs always happen at the worst possible price. The broker uses market orders to close, which means slippage. During fast markets, a stop-out can leave your account in deeply negative territory before the close completes.
The 2015 CHF unpeg triggered cascading stop-outs across thousands of retail accounts. Many traders ended up with NEGATIVE balances because the stop-out couldn't fill in time — the gap was too wide.
Frequently asked about stop out
What is a stop out in trading?+
The automatic closing of your positions by the broker when your margin level drops too low — happens without warning.
When will I see stop out used in real trading?+
When you've over-leveraged and the market moves against you. Hopefully never.
What is the most common mistake traders make with stop out?+
Trusting the stop-out as a safety net. The stop-out is the broker's protection, not yours. By the time it triggers, your account is in serious damage. Use proper position sizing so stop-outs are impossible.
What do experienced traders know about stop out that beginners don't?+
Know your broker's stop-out level (usually 20-50% margin level). Stay AT LEAST 5x above it at all times. If you ever drop within 2x of the stop-out, close positions manually before the broker does.
Read the lesson here. Mark the chart on TradingView. Compare brokers with the checklist.
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