On the same day BitMEX announced it was closing its doors after 11 years, a federal class action lawsuit landed in the Southern District of New York accusing the exchange and its co-founders of systematically looting customer collateral through rigged liquidations. The timing was striking — but perhaps not coincidental. The BitMEX liquidation lawsuit, filed July 23, 2026, names co-founder Arthur Hayes along with Benjamin Delo, Samuel Reed, and former business development head Gregory Dwyer as defendants, alongside exchange entities HDR Global Trading and 100x Holdings.
Summary
Key takeaways
- Plaintiffs BKX Services Inc. and David Namdar filed a class action on July 23, 2026, seeking the return of 622.66 BTC — worth roughly $40 million — plus compensatory and punitive damages.
- The complaint alleges BitMEX auto-liquidated customer positions while holding collateral worth approximately twice their losses, routing the excess into the exchange’s insurance fund.
- An internal “Insider Trading Desk” allegedly had “God access” to customer positions and traded during server freezes that locked out everyone else.
- BitMEX announced its shutdown on September 23, 2026 at 04:00 UTC, following a strategic review; the exchange had already fallen to under 0.01% market share with daily volumes around $400,000.
- Co-founders Hayes, Delo, Reed, and Dwyer were pardoned by President Trump in March 2025 after pleading guilty in 2022 to Bank Secrecy Act violations.
BitMEX and Founders Sued for Liquidation Misconduct
The core accusation is damning in its specificity. Plaintiffs BKX Services Inc. and David Namdar allege that BitMEX did not simply liquidate their leveraged positions when markets moved against them — it kept the leftover collateral. According to the complaint, when their positions were force-closed, the remaining collateral was worth roughly twice their actual losses. Rather than returning the surplus to customers, BitMEX routed it into the exchange’s own insurance fund.
Together, the plaintiffs seek the return of 622.66 BTC, valued at approximately $40 million at current prices according to CoinGecko, alongside compensatory and punitive damages. The suit brings two formal counts: replevin — a legal claim seeking the return of specific property, in this case bitcoin — and fraud.
The scale of the alleged harm
The complaint is granular about what happened to each plaintiff. BKX Services was hit with 13 separate liquidations between July 4 and August 20, 2018. David Namdar suffered 14 larger liquidations between August 2019 and May 2020, including a single 128.58 BTC hit in October 2019. The proposed class covers all US customers of BitMEX’s BTC swap products going back to July 23, 2018 — an eight-year window that could significantly expand the pool of affected claimants.
As the complaint puts it: “BitMEX deliberately developed a system that profited from the liquidations (by seizing its customers’ bitcoin), while its customers were unable to escape the unfavorable positions BitMEX created.”
Allegations of an Insider Trading Desk with Unfair Access
Beyond the collateral claims, the lawsuit alleges something that cuts deeper into exchange integrity: the existence of an internal unit with capabilities no ordinary trader could match. According to the complaint, BitMEX operated an “Insider Trading Desk” that allegedly possessed “God access” to confidential customer position data and liquidation points — real-time visibility into where the market’s most vulnerable positions sat.
Operations and alleged trading advantages
The desk allegedly used software designed to identify price movements that would trigger the most customer liquidations — essentially engineering cascades that benefited the house. More striking still, the complaint alleges the desk continued trading during server freezes that blocked all other users from accessing the platform. Gregory Dwyer, then BitMEX’s head of business development, is identified in the filing as having run this operation largely out of Manhattan.
These are plaintiff allegations, not established facts. BitMEX did not respond to a request for comment by press time, according to The Defiant. But the specificity of the claims — named individuals, described software, dated liquidation events — gives the complaint more structural weight than a generalized grievance.
Scope and Legal Context of the Lawsuit
This is not BitMEX’s first encounter with this kind of claim. The new filing revives a 2020 class action that made substantially similar accusations about BitMEX’s liquidation engine and insurance fund under the Commodity Exchange Act. That earlier case was voluntarily dismissed without prejudice in June 2025, with no ruling on the merits. The new complaint attaches the original as its first exhibit — along with Hayes’s 2020 federal indictment and his plea allocution.
Regulatory history and executive pardons
The legal backdrop matters here. Hayes, Delo, and Reed pleaded guilty in 2022 to Bank Secrecy Act violations following a settlement in which BitMEX entities paid a $100 million civil penalty to the CFTC and FinCEN. All three co-founders, along with Dwyer, were subsequently pardoned by President Donald Trump in March 2025. Hayes has since moved on to serve as CIO of his family office, Maelstrom.
The pardons resolved the criminal exposure but left civil liability entirely intact. A class action seeking $40 million in bitcoin operates in a completely different legal lane — and the voluntary dismissal of the 2020 case without prejudice means all those claims were preserved, ready to be refiled. Which is exactly what happened.
BitMEX’s Shutdown and Company Statements
BitMEX announced its closure on the same day the lawsuit was filed — a coincidence that will likely draw scrutiny. The exchange, operated by HDR Global Trading, said it will cease operations on September 23, 2026 at 04:00 UTC following what it described as “a strategic review of the business and the broader crypto industry.” New user registrations were halted immediately; position limits take effect August 26, and all remaining positions will be force-closed before the deadline.
A platform in steep decline
The numbers tell the story of an exchange that had already effectively ceased to matter. According to Kaiko data cited by Reuters, BitMEX’s daily trading volumes had fallen to around $400,000 — a rounding error for a market where competitors process billions per day. Its market share had collapsed to under 0.01%. The BMEX token dropped roughly 90% when the closure was announced. The exchange had removed its CEO and CFO in late June amid reports it was seeking a buyer.
BitMEX has maintained that all assets exceed liabilities, pointing to its proof-of-reserves page, and has stated that users will be able to withdraw funds after the platform closes. Hayes marked the end on X with three words: “Satoshi for life.”
The shutdown complicates the lawsuit in ways that will take time to resolve. Class actions against closing entities are notoriously difficult to prosecute — assets can be distributed, corporate structures wound down, and claimants left waiting years for any recovery. The question of what happens to BitMEX’s insurance fund, which plaintiffs allege swelled from captured customer collateral, may become the central battleground in the litigation ahead.
FAQ
What is the main accusation against BitMEX in the lawsuit?
Plaintiffs accuse BitMEX of auto-liquidating their leveraged positions while holding collateral worth roughly twice their losses, then routing the excess into the exchange’s own insurance fund instead of returning it to customers.
What is the role of the Insider Trading Desk alleged in the lawsuit?
The complaint alleges that BitMEX’s internal “Insider Trading Desk” had “God access” to confidential customer positions and liquidation points, used software to identify price moves that would trigger the most liquidations, and continued trading during server freezes that locked out all other users.
When will BitMEX shut down its operations?
BitMEX announced it will shut down on September 23, 2026 at 04:00 UTC, following a strategic review by owner-operator HDR Global Trading.
Does BitMEX claim to have sufficient assets to cover liabilities?
Yes. BitMEX has stated that all assets exceed liabilities, as reflected on its proof-of-reserves page, and that users will be able to withdraw funds after the platform closes.
Article produced with the assistance of artificial intelligence and reviewed by the editorial team.
