The BitMEX exchange closure, confirmed for 23 September after an 11-year run, arrives at the precise moment crypto perpetual futures (derivatives contracts with no fixed expiry date, designed to track a spot price indefinitely) finally have defined regulatory routes in the United States. BitMEX said the decision followed a strategic review; neither the company nor the Commodity Futures Trading Commission (CFTC) has linked the shutdown to recent regulatory changes.
Why BitMEX and Its Peers Built the Market Offshore
Early crypto venues went offshore because no practical domestic route existed for perpetuals. The CFTC reinforced that barrier through staff advisories: one issued in 2018, another in 2023, both placing heightened scrutiny on digital-asset derivatives.
BitMEX used an offshore, direct-access model. The CFTC alleged in 2020 that the exchange had nevertheless accepted orders and funds from US customers without registering as a futures commission merchant (a firm authorised to solicit and accept customer orders in futures markets) and without adequate know-your-customer and anti-money-laundering controls. BitMEX settled with the CFTC and FinCEN for $100 million in 2021.
One telling detail shows just how constrained domestic competitors were in the meantime. Before the CFTC cleared the way for true perpetuals, exchanges such as Coinbase Derivatives listed contracts engineered to mimic perpetual economics but with a long-dated expiry, for instance in 2030, purely to satisfy existing guidance. The funding rate drove the economics; the expiry date was there only for regulatory compliance, as noted in the Coinbase Derivatives self-certification request to the CFTC.
How the BitMEX Exchange Closure Lines Up with the New CFTC Framework
The shift in US policy began in March 2025. The CFTC withdrew its 2018 virtual currency derivatives advisory via CFTC Letter No. 25-07 on 27 March 2025, and pulled the 2023 advisory via Letter No. 25-08 the following day, making clear that digital-asset derivatives would be treated like any other derivatives product.
Acting Chair Caroline Pham opened a consultation on perpetual contracts in April 2025. That same month, Bitnomial self-certified BTC/USD perpetual futures and began institutional trading. Bitnomial then submitted a Rule 40.6 self-certification on 29 May 2026 to amend its rules for true perpetual futures contracts; those amendments were deemed certified on 12 June 2026, per the Bitnomial Exchange self-certification request.
The centrepiece arrived on 29 May 2026, when the CFTC approved KalshiEX’s BTCPERP contract, one day after Kalshi submitted it under the voluntary product approval process. The CFTC approval order confirms the contract has an indefinite term with no fixed expiry and is marked to market on a continuous basis. Pricing references the CME CF Bitcoin Real-Time Index (BRTI), administered by CF Benchmarks Ltd. The wider policy statement was published in the Federal Register on 3 June 2026 at 91 Fed. Reg. 33160.
On the same day as the Kalshi approval, the CFTC issued CFTC Letter No. 26-17, covering the Coinbase Financial Markets and Deribit arrangement. That letter allows Coinbase’s registered futures commission merchant to connect US customers to certain Deribit perpetuals, treating them as foreign futures. One condition: Coinbase Financial Markets, its affiliate CBBM, and Deribit must remain wholly-owned subsidiaries of Coinbase Global, a public reporting company. The letter also covers the posting of customer-owned digital commodities and payment stablecoins as margin where the foreign broker holds a right of re-use over those assets. A separate CFTC Staff Letter 26-19, issued on 12 June 2026, gave designated contract markets a pathway to convert existing perpetual-style expiry contracts into true perpetual futures under Rule 40.6.
CFTC Chairman Michael Selig said the policy aimed to bring offshore liquidity under US oversight and manage leverage, volatility and systemic risk inside a regulated framework.
Does the Closure Mean Offshore Perpetuals Are Finished?
Not on current evidence. Binance and OKX held roughly 33% and 15% of volume respectively among the 11 centralised perpetual exchanges tracked by CoinGecko from January to April 2026. BitMEX had already lost its dominant position years earlier: by April 2020 its daily bitcoin futures volume trailed Binance, OKEx and Huobi. No data reviewed here shows liquidity migrating specifically from offshore platforms to CFTC-regulated venues since 2025.
What has changed is the domestic infrastructure. Bitnomial and Kalshi are designated contract markets, meaning they operate under CFTC rules on market integrity, surveillance and risk management. The Kalshi BTCPERP approval covers a cash-settled bitcoin contract only; perpetuals referencing other underlyings require case-by-case review. The Coinbase Financial Markets relief is similarly bounded by the conditions in Letter No. 26-17.
For UK-based retail investors holding crypto exposure through ISAs or SIPPs, the immediate effect is indirect: greater US institutional participation in regulated bitcoin derivatives can affect global pricing and volatility. The question now is whether the new onshore infrastructure draws volume from the large offshore venues over time, or whether Binance and OKX simply add regulated US wrappers of their own.
