Celsius Estate Sues BitMEX for $495 Million Over 2020 Bitcoin Liquidations

A Bankruptcy Estate Goes After a Derivatives Exchange

The Celsius Network estate has filed a $495 million lawsuit against BitMEX, targeting losses the now-defunct crypto lender suffered during the March 2020 Covid-induced market crash. At the center of the complaint is a leveraged long position in Bitcoin that was liquidated as prices collapsed – a position that raises uncomfortable questions about how Celsius actually managed client funds behind the scenes.

The estate is seeking recovery of 6,360 BTC lost in that crash.

The timing and nature of the position put Celsius in a difficult spot historically. The company marketed itself to retail depositors as operating with a delta-neutral strategy – a hedging approach designed to avoid directional exposure to Bitcoin’s price. A leveraged long position, by definition, is the opposite of delta-neutral. It profits when Bitcoin rises and bleeds when it falls, which is exactly what it did during the Covid selloff in March 2020 when prices dropped by more than 50 percent in a matter of days.

What the 6,360 BTC Actually Represents

Translating 6,360 BTC into dollar terms depends heavily on timing, which is partly why the lawsuit frames the claim at $495 million rather than the coins’ original crash-era value. Bitcoin was trading at depressed levels when those positions were liquidated, but the estate’s valuation reflects the broader financial damage to creditors who are still waiting for distributions years after Celsius filed for bankruptcy in July 2022.

BitMEX, the Seychelles-based perpetual swap exchange built by Arthur Hayes and his co-founders, was a dominant venue for leveraged Bitcoin trading during that period. The platform was notorious for its liquidation engine, which critics argued compounded losses during volatile periods by cascading forced sells into already-thin markets. Celsius, according to the lawsuit, was caught in that mechanism during the March 2020 crash.

The claim is not simply that prices went down and Celsius lost money. The estate appears to be arguing that the liquidation process itself – how BitMEX handled the position as margin requirements collapsed – contributed to the scale of losses in a way that gives rise to legal liability. That is a harder argument to make than a straightforward breach of contract claim, and it signals that the litigation could get technically complex quickly.

Delta-Neutral Marketing Against a Directional Bet

Celsius founder Alex Mashinsky repeatedly told investors and depositors that the platform used delta-neutral strategies to generate the high yields it was offering – sometimes exceeding 18 percent annually on certain crypto assets. The idea was that Celsius was not gambling on price direction but instead earning returns through lending, arbitrage, and other market-neutral activities. A 6,360 BTC leveraged long position directly contradicts that framing.

Mashinsky was arrested in July 2023 on fraud charges, with prosecutors alleging he misled customers about how Celsius deployed their funds. He has pleaded not guilty. The existence of this specific position – now being litigated through the bankruptcy estate – adds a factual data point to a pattern that regulators and creditors have been piecing together since the collapse.

What makes the BitMEX lawsuit notable is that it shifts focus from what Celsius told customers to what Celsius actually did on trading platforms. The estate is effectively documenting the gap between public messaging and internal strategy through litigation, one exchange relationship at a time. For BitMEX, the lawsuit is a significant legal exposure – perpetual swap trading has evolved considerably since 2020, but the legal risks of that era are clearly still working their way through the courts.

The $495 million figure will now face scrutiny in court, where BitMEX will almost certainly argue that Celsius entered the position voluntarily, understood the liquidation mechanics, and absorbed a market risk that materialized the same way it did for thousands of other traders during one of crypto’s most violent single-day selloffs. Whether the estate can prove that BitMEX bears specific responsibility for the scale of those losses – rather than the market itself – is the question the lawsuit will ultimately have to answer.