The crypto market’s Oct. 10, 2025, flash crash erased approximately $19 billion in leveraged positions, sending Bitcoin down from roughly $122,000 to $105,000 after it had climbed to a record above $126,000.
Mark Connors of Risk Dimensions, formerly involved in hedge fund positioning analysis at Credit Suisse, warned that overcrowded trades continue to pose a significant risk to crypto markets. Open interest was close to record levels before the crash, as optimistic investors anticipated Bitcoin prices of $250,000 to $400,000 based on historical four-year cycle patterns.
According to Connors, derivatives activity was the main driver of the sell-off, rather than movements recorded directly on the blockchain. He pointed to the growing influence of “paper bitcoin,” referring to futures and other contracts that can affect prices without involving direct purchases or sales of Bitcoin itself. Perpetual futures remain a major part of crypto trading, and exchanges have financial incentives to maintain access to leveraged positions.
Traders now have better tools to examine order books and market positioning, helping them identify potential vulnerabilities. Chris Sullivan of Hyperion Decimus recommended staying away from leverage and watching indicators such as open interest, funding rates and investor sentiment. For long-term holders, he also stressed the benefits of self-custody and storing assets outside exchanges.
Further liquidation events cannot be ruled out while leveraged trading remains widespread across the crypto market.
The sell-off also renewed questions about whether Bitcoin’s traditional four-year cycle can still reliably predict market movements. Connors said the pattern has changed and offers less predictive value than before, while macroeconomic developments and political events may now play a more prominent role.
Although institutional investment products have expanded, derivatives continue to influence Bitcoin’s short-term price action. The crash underscored the importance of understanding leverage, positioning and market structure when assessing crypto-market risk.
