BitMEX has begun the final phase of its derivatives wind-down, placing its remaining dated futures contracts into Reduce Only mode on Monday as the once-dominant crypto derivatives exchange moves toward shutting down later this month.
At 04:00 UTC on Sept. 7, BitMEX restricted ETHUSDU26, XBTU26, XBTZ26 and XBTH27, meaning traders can reduce existing positions but can no longer open new ones or increase their exposure. Designated market makers are exempt from the restriction and can continue increasing positions where necessary to provide liquidity.
The restrictions will now spread to BitMEX’s best-known perpetual products.
ETHUSD and ETHUSDT are scheduled to enter Reduce Only mode at 04:00 UTC on Sept. 8, followed by XBTUSD and XBTUSDT at the same time on Sept. 10. All eight remaining derivatives contracts — four perpetual swaps and four dated futures — are then scheduled to be delisted and settled early at 12:00 UTC on Sept. 16.
For the perpetual contracts, trading will stop eight hours earlier, at 04:00 UTC on Sept. 16. BitMEX will calculate the final funding rate, set subsequent funding to zero and cancel outstanding orders when settlement takes place. XBTUSD and XBTUSDT positions will be settled using 30-minute Bitcoin settlement indices, while ETHUSD and ETHUSDT will use corresponding Ether indices. No settlement fee will be charged.
The dated futures are also being terminated before their original expiries. XBTU26 and ETHUSDU26 had been scheduled to expire on Sept. 25, while XBTZ26 was due in December and XBTH27 in March 2027. BitMEX has calculated adjustment rates intended to account for the gap between the early settlement date and each contract’s original maturity.
The move is part of a shutdown announced in July by HDR Global Trading Limited, BitMEX’s Seychelles-registered owner and operator. The exchange will cease operations at 04:00 UTC on Sept. 23 after more than 11 years in business.
BitMEX said the decision followed a “strategic review of the business and the broader crypto industry.” Its closure FAQ separately says the decision was not prompted by financial distress, a hack or immediate regulatory pressure. New account registrations stopped when the shutdown was announced.
Customers have been repeatedly urged to close positions and withdraw their assets before the closure date.
BitMEX has warned that it can force-close positions during the wind-down if necessary to maintain an orderly market. Under its original closure plan, any positions still open at the Sept. 23 closure time would be force-closed, although the subsequent decision to settle all remaining derivatives on Sept. 16 means derivatives traders now face an earlier effective deadline.
Withdrawals are not scheduled to disappear when trading ends. BitMEX says customers will still be able to log in after the exchange closes, view wallet balances and historical transactions, and withdraw remaining assets.
There is, however, a financial incentive to leave early. Verified customers with balances remaining after Sept. 23 will face an account fee based on 1% per annum or $50 equivalent, whichever is greater, charged against remaining balances. BitMEX says the fee could increase over time with advance notice. Deposits sent after the closure time will not be credited and may not be recoverable.
The closure marks a striking reversal for an exchange that helped shape modern crypto derivatives trading. Founded in 2014, BitMEX became synonymous with highly leveraged Bitcoin trading and was an early pioneer of the perpetual swap, a product that has since become central to crypto derivatives markets globally.
But its importance to overall crypto trading has fallen sharply. When the closure was announced in July, Kaiko data cited by Reuters put BitMEX’s market share below 0.01%, with daily trading volumes around $400,000.
Current figures remain small compared with major derivatives venues. CoinGecko showed about $790,000 in BitMEX derivatives trading volume over the previous 24 hours at the time of writing, against approximately $25.2 million of open interest.
The platform’s history also includes a major regulatory confrontation with the United States. Co-founders Arthur Hayes, Benjamin Delo and Samuel Reed pleaded guilty in 2022 to violations related to BitMEX’s failure to maintain a compliant anti-money-laundering program. They were pardoned by U.S. President Donald Trump in 2025.
The Real Test Is How the Last Positions Leave BitMEX
For the wider crypto market, BitMEX disappearing on Sept. 23 may be almost anticlimactic.
The exchange no longer controls enough volume for its shutdown alone to meaningfully move Bitcoin or Ether. The more interesting story is what happens inside BitMEX during the days before trading disappears.
Reduce Only fundamentally changes the dynamics of a derivatives market.
Normally, a trader trying to close a long position can transact against somebody opening a new long, increasing a short or adjusting another strategy. Once most participants are prohibited from adding exposure, the pool of potential counterparties becomes narrower. BitMEX’s decision to exempt designated market makers from the rule is therefore important: somebody needs to remain capable of taking the other side while customers exit.
That system can work smoothly if open interest falls gradually and market makers remain active.
The risk appears if too many traders try to leave at the same time.
Current open interest is far larger than BitMEX’s recent daily trading volume. Those figures are not enough by themselves to conclude that the exchange faces a liquidity problem, and volume can rise sharply as deadlines approach. But they do explain why BitMEX is imposing restrictions in stages instead of simply allowing every contract to trade normally until Sept. 23.
The Sept. 16 early settlement is particularly significant.
A trader holding the December 2026 or March 2027 Bitcoin futures originally entered a contract whose value reflected months of remaining time. Those positions are now being ended far earlier. BitMEX has created adjustment rates to compensate for that difference, but traders lose the ability to decide for themselves whether to hold until the original expiry.
The same distinction applies to perpetual swaps. Their entire selling point is that they do not expire. Yet XBTUSD — one of the products most closely associated with BitMEX’s rise — now has a fixed end date.
That makes Sept. 16 arguably more important than Sept. 23. By the time the exchange formally closes one week later, its derivatives business should already have disappeared.
What happens afterward will test another part of the shutdown: withdrawals.
So far, recent public searches do not show a clear cluster of new withdrawal complaints tied to the closure. That is important because an orderly shutdown looks very different from the collapses that have defined some previous crypto-exchange exits. BitMEX says customer assets remain safe and explicitly says financial distress is not behind its decision.
That claim will ultimately be judged less by the closure announcement than by whether customers can leave without difficulty.
If spreads remain controlled, settlements track the stated indices and withdrawals continue normally, BitMEX may disappear with surprisingly little disruption despite its place in crypto history.
If liquidity deteriorates, forced closures become contentious or withdrawal complaints begin appearing as deadlines approach, the final two weeks could become a much bigger story than the shutdown itself.
For an exchange that helped create the perpetual-swap market, its final act is now unusually simple: unwind every remaining trade, return customer balances and close without creating one last crisis.