Crypto Stop Losses: The Hidden Cost of Slippage

In October 2025, a massive forced sell-off ran through the crypto market. Bitcoin's price plummeted from $122,574 to $104,782 in just over an hour. During this period, more than $6.93 billion of liquidations occurred, with $3.21 billion clearing in a single minute at 21:15 UTC.

According to FTI Consulting's analysis, top-of-book depth for Bitcoin shrank by over 90% on major venues during this event. This led to bid-ask spreads widening from single-digit basis points to double-digit percentages, resulting in a fill quality problem rather than a price problem.

The article highlights the issue of slippage, where a stop placed one percent away can close at three times its intended distance. The author argues that most traders underestimate the impact of slippage on their risk management strategies. Using an example, they demonstrate how a budgeted loss of $400 per trade can become a realized loss of $1,200 due to slippage.

The author suggests that traders should measure their own slippage by comparing intended loss to realized loss across their last hundred stopped trades. This ratio is referred to as the slippage multiplier and is specific to each trader's instruments and session times.

They also recommend treating the daily limit as the tighter constraint, as a 4% daily limit on $100,000 permits only $4,000. Two slipped losses in a bad session can take a third of this amount before making a decision.