BitMEX Faces $40M Lawsuit as Exchange Shuts Down After 11 Years

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• BitMEX has been hit with a class action lawsuit seeking more than $40 million in Bitcoin-related damages.
  
• The lawsuit was filed on the same day the exchange announced it will permanently cease operations.
  
• BitMEX denies all allegations and says it will vigorously defend itself in court.

BitMEX is ending its 11-year run under renewed legal pressure. The crypto derivatives exchange, founded by Arthur Hayes, has been named in a new class action lawsuit in the United States on the same day it confirmed plans to permanently shut down its trading platform.

The timing has drawn attention across the crypto industry, with the lawsuit arriving just weeks before the exchange begins winding down customer trading services. Plaintiffs accuse BitMEX of operating an unfair liquidation system that allegedly benefited the exchange at the expense of traders. BitMEX has firmly denied the allegations and says it will fight the claims in court.

Class Action Claims More Than $40 Million in Bitcoin Losses

The lawsuit was filed in the U.S. District Court for the Southern District of New York by BKX Services Inc. and investor David Namdar. According to the complaint, the plaintiffs collectively lost 622.66 BTC—worth more than $40 million at current Bitcoin prices.

The filing alleges that BitMEX’s liquidation engine was intentionally structured to maximize customer liquidations while allowing the platform to retain excess Bitcoin collateral. It also claims that some traders had access to confidential customer information and were able to continue trading during periods when ordinary users allegedly could not access the platform due to server issues.

Plaintiffs further argue that BitMEX’s leverage offerings of up to 100x increased the likelihood of forced liquidations. They claim that even when customer accounts held sufficient remaining collateral, positions were still liquidated, with excess Bitcoin allegedly transferred into the exchange’s insurance fund.

The lawsuit seeks repayment of the disputed Bitcoin holdings, financial damages, and punitive compensation. It also aims to represent U.S. customers who traded Bitcoin and other crypto derivatives on BitMEX since July 23, 2018.

BitMEX Announces End of Exchange Operations

The legal challenge comes immediately after HDR Global Trading, BitMEX’s parent company, announced that it would discontinue the exchange following a strategic review.

New user registrations have already been suspended. Existing customers will no longer be able to open new trading positions after August 26, 2026, while all remaining exchange services are scheduled to end on September 23, 2026.

Following the shutdown announcement, BitMEX’s utility token, BMEX, lost nearly 90% of its value, reflecting investor concerns over the platform’s future.

Exchange Rejects Allegations

BitMEX has dismissed the lawsuit, describing it as another unfounded legal challenge.

A company spokesperson said the exchange has successfully defended similar claims in the past and intends to vigorously contest the latest lawsuit. The company maintains that the allegations lack merit and rejects accusations that it profited unfairly from customer liquidations.

The lawsuit adds another legal hurdle to BitMEX’s final chapter as one of the crypto industry’s earliest derivatives exchanges. While the court will ultimately determine the validity of the allegations, the combination of a high-profile lawsuit and a planned shutdown marks a dramatic conclusion for a platform that once played a major role in the digital asset trading market.

Also Read: BitMEX Shuts Down After 11 Years: 5 Critical Deadlines Every Trader Must Know

With trading services set to end in the coming months, customers and industry observers will now be closely watching both the legal proceedings and the exchange’s final wind-down.

Disclaimer: The information in this article is for general purposes only and does not constitute financial advice. The author’s views are personal and may not reflect the views of Chain Affairs. Before making any investment decisions, you should always conduct your own research. Chain Affairs is not responsible for any financial losses.