The estate of bankrupt crypto lender Celsius Network has sued exchange BitMEX for $495 million, claiming the platform mishandled liquidations during the March 2020 market crash and cost the lender 6,360 bitcoin, worth roughly $490 million at recent prices.
The lawsuit, reported by CoinDesk on Wednesday, revives one of the messiest chapters of the 2020 Covid crash, when bitcoin fell by more than half in two days and leveraged positions across the industry were wiped out in hours. Celsius says BitMEX executed the liquidations of its collateral in a way that destroyed value the exchange should have preserved.
What the estate claims
Celsius ran a leveraged long position on BitMEX in early 2020, a bet that bitcoin would rise. When the pandemic panic sent prices plunging on March 12 and 13 of that year, the position was liquidated. The estate’s core argument is that the liquidation process itself, not the price crash, caused the loss: that BitMEX’s execution was defective or improper and that a properly handled liquidation would have recovered far more of the 6,360 BTC position.
The claim arrives more than six years after the events and years into Celsius’s own bankruptcy, which began in July 2022 when the lender froze withdrawals with billions in customer assets locked inside. The estate has spent the years since pursuing recoveries from everyone from former executives to trading counterparties, and litigation against exchanges that served the lender is a familiar part of that playbook. Previous recoveries have included settlements with key personnel and clawback actions against insiders who withdrew funds shortly before the freeze.
The awkward detail in Celsius’s own story
As CoinDesk noted, the leveraged long sits awkwardly next to how Celsius marketed itself. The lender presented its yield products to retail customers as low-risk lending against institutional counterparties, not as directional bets on bitcoin’s price. A 6,360 BTC leveraged long on a derivatives exchange is exactly the kind of position the marketing implied did not exist.
That tension ran through the entire Celsius bankruptcy. Court filings and the documentary record showed the company taking proprietary trading risks with customer deposits while telling users their funds were safe and generating yield. Former CEO Alex Mashinsky was later criminally charged and pleaded guilty to fraud, receiving a prison sentence. The BitMEX suit is, in part, the estate trying to recover value that its own risk management failed to protect.
The estate is chasing 6,360 BTC lost in the Covid crash, a leveraged long position that sits awkwardly with the lender’s delta-neutral marketing, CoinDesk reported.
BitMEX’s likely defense
BitMEX will almost certainly argue that liquidations during March 2020 followed its published rules, that the crash was an extraordinary market event in which liquidity vanished across every venue, and that the claim is time-barred after six years. Exchanges typically require users to accept that liquidations in fast markets may execute at whatever prices the book supports, a term that has survived legal challenge in several jurisdictions.
The exchange is also no stranger to litigation. BitMEX’s operators paid $100 million in 2022 to settle US charges that it operated without anti-money-laundering controls, and the platform has faced class actions from former users. A $495 million claim from a bankruptcy estate is a different category of adversary, though, because the estate has dedicated litigation funding and no retail customer base to worry about.
Why it matters beyond the two parties
The case tests a question that keeps resurfacing as crypto markets mature: how much responsibility does a derivatives exchange bear for liquidation outcomes in a crash? Plaintiffs have argued for years that liquidation engines front-run their own users, that marking prices during thin liquidity amplifies losses, and that socialized loss pools are unfair. Venues have answered that volatility is the user’s risk and the engine is neutral. Courts have mostly sided with venues so far, but a well-funded estate with six years of documents is a stronger test than a retail class action.
The March 2020 crash itself remains a reference point for market design debates. Bitcoin dropped from around $9,000 to below $4,000 in about 36 hours as pandemic panic swept every asset class. Derivatives venues saw record liquidation volumes, several platforms suffered outages, and the episode pushed much of the industry toward better risk engines and deeper insurance funds. Whether BitMEX’s engine behaved as promised on those two days is now a question for a court rather than a forum thread.
Timing matters too. The suit lands while bitcoin trades near $76,000, down sharply from its 2025 highs and roughly 22 percent lower year to date, with the market still digesting the Fed’s first rate hike since 2023 and the Senate’s failure to advance the CLARITY Act. Recovery amounts from litigation are booked as assets in the Celsius estate and flow eventually to creditors, many of them retail users who have already waited four years for distributions. Any realistic payout from this case, if it succeeds, is years away given appeals.
For BitMEX, the immediate exposure is legal cost and the distraction of defending a 2020-era decision under a microscope. For the broader exchange sector, the complaint is a reminder that legacy decisions from past crashes have long tails, and that bankruptcy estates can reach back years to relitigate them. Lenders that collapsed in 2022, including BlockFi, Voyager and Genesis, all built litigation programs against counterparties, and several of those cases are still moving through the courts. Each outcome sets precedent the next estate will cite.
Neither BitMEX nor the Celsius estate has commented publicly beyond the filing itself, and a first case management conference is likely months away.