The cryptocurrency exchange and derivatives platform that pioneered crypto perpetual swaps in 2016 announced it will be shutting down operations in September.
As exchanges processed over $1.32 trillion in perpetual futures in the first five months of 2026, the US Commodity Futures Trading Commission (CFTC) approved Kalshi’s Bitcoin perp (BTCPERP) contract, and exchanges launched pre-IPO perpetual contracts, BitMEX’s decision to close its doors could not have come at a worse time.
“Being first to build the category doesn’t guarantee you survive to lead it. BitMEX got the product right, but they failed on the compliance front, and that gap compounded over five years into an insurmountable disadvantage,” Ashley Ebersole, co-founder and Chief Legal Officer at tx, a blockchain designed for real-world asset (RWA) tokenization, trading, and compliance, told DeFi Rate.
The same day BitMEX announced its wind-down, a proposed class action landed against it, accusing the platform of theft and insider trading.
A lawsuit alleging an “Insider Trading Desk”
The July 23 complaint, filed by former tokenization project BKX Services and trader David Namdar, accuses BitMEX of running an internal “Insider Trading Desk” with what the plaintiffs call “God access”.
“For example, BitMEX misled customers into believing that they could place “hidden orders” that would be concealed from other traders, and that the liquidation points of each of their positions would be kept private. BitMEX leveraged this information to trade against its customers,” the lawsuit states.
In addition, the lawsuit alleges the desk could continue trading during server freezes that locked everyone else out.
“An allegation about a system is proven or destroyed by the system’s own records, and that happens in discovery, the phase where each side must hand over its documents,” Yuriy Brisov, a partner at Digital & Analogue Partners, said. “… If the logs show internal accounts trading through the freeze, the innocent explanation dies.”
Plaintiffs want their bitcoin back
The complaint’s core legal maneuver is its choice of remedy. BKX and Namdar are pursuing a property claim arguing the BTC they deposited never stopped being theirs.
For Brisov, that distinction matters, given how far bitcoin’s price has moved since the alleged losses when the coin traded between $6,000 and $8,000 between 2018 and 2020. The complaint values a coin at $64,979.70 as of filing.
Property claims carry a second advantage in a wind-down, because when a company shuts down, everyone owed money stands in a creditor queue, while an owner is shortlisted to collect the assets that are legally theirs.
“The obstacle is that BitMEX wrote its paperwork against exactly this claim. Its terms say ownership of deposited coins passes to the company, and its risk statement tells customers they have no ownership claim and no interest in the insurance fund, the pool BitMEX filled with the proceeds of liquidations.”
Brisov added the complaint does not ask for a freezing order on the roughly $270 million currently held in the fund, leaving open the possibility that if the money moves before the case advances, “the claim for coins quietly becomes a claim for 2018 dollars.”
To win or not to win?
A successful judgment does not guarantee plaintiffs see any money, Brisov said, and BitMEX’s wind-down could cut both ways here.
In April 2020, traders sued BitMEX in the same Manhattan court over the same conduct. BitMEX moved to dismiss the claims, but they were refused four years later in a written ruling by Judge Andrew Carter.
“The case died a strange death,” Brisov said, “Document exchange had begun; the lead plaintiff abandoned his own case, and his lawyers withdrew; the last claimant reportedly stopped answering the court, and in June 2025 the case closed without prejudice.”
A class action pending in court pauses the statute of limitations clock for everyone in the proposed group, and the new complaint leans directly on that pause.
“The net result is a foundation, not a failure,” Brisov said. “A judge has already said these facts state a claim.”
However, whether that foundation turns into a payout is a separate question. BitMEX says its assets exceed its liabilities, meaning the wind-down is a solvent closure.
“A judgment is a piece of paper; it becomes money only where a court can reach assets,” Brisov said. “A solvent closure can pay its owners and dissolve, while an insolvency at least freezes everything and appoints someone with duties to creditors.”
Mid-tier exchanges are shutting down
Zoom out, and BitMEX’s closure looks less like an isolated collapse and more like a symptom. BitMEX and BitMart both announced closures within three days of each other, following AscendEX‘s exit earlier this year.
“The market seems to be clearing out the middle tier of exchanges,” tx’s Ebersole’s said.
He added that compliance costs at an institutional scale and liquidity network effects that concentrate volume at the top three or four venues have made mid-tier exchanges vulnerable.
“That squeeze has been building since 2023, and the consolidation is probably not finished. The baseline cost of operating a compliant exchange keeps increasing, and that pressure doesn’t ease for the remaining mid-tier players just because their competitors closed.”
Allegations on X have started to come out that BitMart users are unable to withdraw their funds from the exchange.
Reports have claimed the exchange may be having issues with its reserves, but no official statements were released.
BitMEX did not respond to DeFi Rate’s request for comment.
