Crypto Traders Underestimate Slippage Risk in Forced Sell-Offs
Crypto traders often underestimate the risk of slippage, which occurs when a stop-loss order is filled at a price significantly different from its intended level. This can lead to unexpected losses and account closures.
On October 10, 2025, a forced sell-off in Bitcoin resulted in $6.93 billion of liquidations in just 40 minutes, with over $3.21 billion clearing in one minute. During this time, the top-of-book depth for Bitcoin shrank by more than 90%, and bid-ask spreads widened to double-digit percentages.
Traders who planned to risk $400 per trade would have seen their average losing trade increase from $400 to $533, reducing their budget from 20 attempts to just 15. This is because the actual fill distance was three times the intended loss, rather than one percent as initially planned.
To mitigate this risk, traders should measure their own slippage by comparing intended loss to realised loss across their last hundred stopped trades. They should then size using this multiplier, not the theoretical stop distance, and treat the daily limit as the tighter constraint. A static drawdown can also help by removing one unknown from the calculation.