Celsius Sues BitMEX for $495M Over 2020 Liquidations

Celsius Network filed a $495 million lawsuit against five BitMEX entities on Wednesday, targeting the derivatives exchange over liquidations it says destroyed 6,360 Bitcoin during the March 2020 market collapse, and doing so with just 11 days to spare before BitMEX permanently shuts down trading.

The timing is strategic. BitMEX is scheduled to cease operations on approximately September 27, 2026, and Celsius appears to be racing to establish legal claims before the exchange goes dark. Filing after closure would complicate service of process, discovery, and ultimately the collection of any judgment. By moving now, Celsius preserves its position in what could become a messy creditor queue.

The underlying events trace back to March 12, 2020, known in crypto circles as "Black Thursday." Bitcoin fell from roughly $7,900 to approximately $3,600 in a matter of hours, triggering cascading margin calls across leveraged derivatives platforms. BitMEX, which ran one of the largest perpetual swap markets at the time, was at the center of the chaos. Automated liquidation engines on platforms like BitMEX are designed to close underwater positions before losses exceed posted margin, but during extreme volatility those engines can execute at prices far below a trader's expected exit, compounding losses across the book. Celsius alleges that BitMEX's liquidation practices during that window were improper, not merely aggressive.

BitMEX's likely defense is straightforward: users accepted margin agreements and terms of service that governed exactly how liquidations would be handled, and an unprecedented intraday drop of more than 50% is the kind of event those terms anticipate. Whether a court agrees that BitMEX's specific mechanics crossed a legal line, rather than simply functioning as disclosed, is the central question the litigation will resolve. There is also the matter of timing. Six years elapsed between the 2020 crash and this filing, and statute of limitations arguments could loom large depending on which jurisdiction's law applies.

Celsius's own history adds complexity. The lender filed for Chapter 11 bankruptcy in July 2022 after freezing customer withdrawals, and has spent the years since in restructuring. The $495 million claim is, in effect, a recovery action mounted by a bankrupt estate seeking to claw back value for creditors. That framing gives the lawsuit a certain legal logic: bankruptcy trustees and estate administrators routinely pursue litigation that the pre-bankruptcy entity might have let slide. The 6,360 BTC at the center of the claim would, at Bitcoin's current market price, represent a sum substantially larger than the $495 million figure, which likely reflects a valuation methodology tied to the 2020 crash prices or a negotiated damages theory rather than today's spot rate.

The broader significance may outlast the specific dispute. Liquidation mechanics on derivatives exchanges have been a persistent source of controversy since at least 2020, when multiple platforms were accused of using client positions to cover socialized losses or of running liquidation engines in ways that benefited the exchange's own insurance fund. No major lawsuit has yet produced a definitive ruling on whether exchange liquidation practices during a market crash constitute a breach of duty or something more actionable. If Celsius's case proceeds to substantive rulings rather than settling quietly, it could establish the first real legal framework for evaluating those practices, a precedent with implications for every leveraged trading venue operating today.

Whether Celsius can actually collect is a separate problem. BitMEX's shutdown means its operational infrastructure is winding down, and any judgment would need to reach assets held by the five named entities across what has historically been a complex corporate structure. Creditors chasing a closing exchange is a familiar story in crypto; getting paid is the hard part.

The case was filed September 16, 2026. Court filings had not yet produced a response from BitMEX as of publication.