Bitcoin Rockets to $155K on Bitfinex as Order Book Void Triggers Spike

On September 21, 2026, the BTC-PERP perpetual futures contract on cryptocurrency exchange Bitfinex experienced an anomalous flash spike, briefly printing an intraday high of $153,960. The dramatic move occurred amid a momentary liquidity void in the derivatives order book, while spot Bitcoin prices remained stable near $85,000, with Bitfinex's spot composite index topping out at $84,406. The sudden vertical surge was primarily triggered by a massive cascade of forced short liquidations. According to data from Coinglass, over $688.07 million in leveraged positions were liquidated across the broader crypto market within 24 hours, impacting 117,116 traders, with short liquidations accounting for $598.27 million of the total. Bitcoin-linked contracts represented $354.93 million of these liquidations. The pricing dislocation was resolved in under sixty seconds as automated arbitrage algorithms and market makers stepped in to restore parity across venues. Following the normalization, the BTC-PERP contract traded around $85,038, reflecting a 5.55% gain over 24 hours. Analysts emphasized that the isolated dislocation reflected thin order book depth rather than a structural shift in Bitcoin's market trend.