BitMEX is facing a class-action lawsuit alleging the exchange used privileged access to force liquidations and seize approximately 622.66 BTC in customer collateral, filed the same day the exchange announced its shutdown.
Plaintiffs BKX Services Inc. and David Namdar filed the complaint in the U.S. District Court for the Southern District of New York on July 23, 2026. The suit alleges BitMEX engineered forced liquidations through server freezes and trading access privileges to strip customer accounts of collateral, according to the court filing.
BitMEX announced its shutdown on July 23 in a statement to customers. The exchange, founded in 2014 by Arthur Hayes and other principals, had operated as one of the largest cryptocurrency derivatives platforms before U.S. regulators began enforcement action against it in 2020. Hayes pleaded guilty to money laundering charges in 2023 and served time; BitMEX itself paid a 100 million dollar settlement to the Commodity Futures Trading Commission and Department of Justice in 2021 over unregistered trading and violations of anti-money-laundering rules.
Forced liquidations have been a recurring source of customer disputes on derivatives exchanges. The mechanics work as follows: when a trader's account value falls below a maintenance margin threshold, the exchange automatically closes positions at market price. BitMEX's order book and margin system were, until the shutdown, a focal point in the market during volatile price moves. The suit contends that BitMEX abused its control over both the matching engine and customer account access to engineer liquidations at unfavorable prices.
The 622.66 BTC figure equals approximately 26 million dollars at current prices. The lawsuit names the exchange and seeks damages on behalf of all customers who experienced forced liquidations during an alleged period of coordinated manipulation. The filing includes allegations that the exchange knew it was facing operational and regulatory pressure when the liquidations occurred.
BitMEX's shutdown follows a four-year period of restricted operations in the United States after the 2021 settlement. The exchange had continued serving customers outside America but faced mounting compliance costs and market concentration in rival platforms including Bybit and OKX. The timing of the liquidation claims and the closure announcement has triggered immediate legal scrutiny.
The court filing is the first formal allegation that BitMEX weaponized its infrastructure to extract collateral in the final operational window. If the plaintiffs survive a motion to dismiss, discovery will require BitMEX to produce internal communications, server logs, and margin calculation records from the period in question. The number that decides next steps is whether a judge certifies the class by September 2026, which would bind remaining BitMEX customer claimants to the action.
