Crypto derivatives platform BitMEX faces a class action lawsuit for 622.66 bitcoins, filed on July 24, 2026 in New York federal court. The plaintiffs accuse the exchange of orchestrating fraudulent liquidations to seize its customers’ bitcoins. This legal action falls on the precise day that BitMEX announced that it was ending eleven years of activity.
In brief
- BKX Services and David Namdar claim 622.66 BTC for improper liquidation, citing fraudulent maneuvers by the platform.
- BitMEX permanently ceases its services on September 23, 2026; new registrations are already blocked.
- The complaint revives years-old accusations about the practices of the exchange’s internal trading desk.
A complaint that revives old accusations against the derivatives giant
The case does not come out of nowhere. As early as 2020, a first class action lawsuit led by Brett Messieh already pointed to similar practices at BitMEX, accusing the platform of manipulating its liquidation engine to the detriment of traders. This procedure was voluntarily abandoned without prejudice on June 30, 2025, but the suspicions never completely disappeared.
The new complaint, filed by BKX Services Inc. and David Namdar, goes into further detail. The plaintiffs claim that BitMEX has “ deliberately designed a system that took advantage of liquidations “.
According to the court document, an internal trading desk had access to confidential client information and could continue to operate during server freezes that prevented ordinary users from accessing or closing their positions.
BitMEX rejects these accusations. “ BitMEX has already faced many similar complaints in its history and has dealt with them all successfully “, a spokesperson for the platform told Cointelegraph.
This is yet another baseless opportunistic complaint; we will defend ourselves vigorously again.
The timing of this legal action coincides with the shock announcement of the closure of BitMEX, scheduled for September 23. A coincidence that the plaintiffs’ lawyers will not fail to exploit.
Liquidation engine accused of siphoning bitcoins from traders
At the heart of the dispute is the BitMEX liquidation mechanism. The platform allowed its clients to use leverage of up to 100 times their collateral, then automatically liquidated the positions. The problem, according to the plaintiffs, lies in what the exchange did with the remaining bitcoin after liquidation.
According to the complaint, the positions were liquidated while the collateral was still worth approximately double the losses incurred. Excess BTC was not returned to traders, but transferred to the platform’s insurance fund. A mechanism which, if proven, would transform each liquidation into a source of profit for the exchange.
BKX Services demands at least 305.81 BTC, while David Namdar demands more than 316.85 BTC. The two plaintiffs seek to represent all American customers who have purchased derivatives products on BitMEX since July 23, 2018. They seek the return of the allegedly confiscated bitcoins, as well as compensatory and punitive damages.
The extreme leverage offered by BitMEX has long been its trademark. But it also exposes the platform to recurring criticism on the transparency of its liquidation engine. The central question in the trial will be whether BitMEX abused this mechanism to enrich itself at the expense of its own customers.
A platform that brings down the curtain after eleven years of controversy
The announcement of the closure constitutes an earthquake for the crypto ecosystem. BitMEX has stopped accepting new registrations and will block the opening of new positions starting August 26. This decision, taken after a strategic review by its parent company HDR Global Trading, caused the collapse of the utility token BMEX, which plunged by around 90% in the process.
The platform had already started to scale back in July by removing 65 trading pairs and several derivative products from its offering. However, these warning signals did not predict such a rapid total closure.
The irony of the calendar escapes no one: the day BitMEX announces it is bowing out, a New York court files a complaint that could cost the exchange dearly. BitMEX’s defense will have to convince the court that the contested liquidations were part of the normal functioning of the market, and not a deliberate strategy of enrichment.
In short, the fate of BitMEX illustrates the growing pressure experienced by historic crypto platforms, caught between increasingly offensive regulators and customers who no longer hesitate to take their grievances to court.
The fall of the BMEX token, the proliferation of class actions targeting exchanges and the context of dry closure paint an unequivocal picture: the era of opaque platforms is coming to an end. It remains to be seen whether the 623 bitcoins claimed will ever find their way back to the wallets of their rightful owners.
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