OKX to disable Unified Order Book on USDT-USD spot pair

To streamline our spot trading product offering, OKX will only support trading USDT/USD pair with USD, and discontinuing support for trading with USDC, USDG for new order submissions.

Note for users in certain regions: If the pair displays as USDT/USDⓈ in your region, the pair will be fully delisted instead. The rest of the announcement does not apply to you, affected users will receive a separate notification by email and notice with delisting details.
For more details on how Unified Order Book works, please refer to our product documentation.

Timeline

• 2 Jun 2026 17:00 (UTC+8) - Unified Order Book on USDT/USD will be disabled. From this time, USDT/USD will operate as a standalone trading pair only.

What this means for you

Spot order:

• New orders:

  • You will no longer be able to submit new orders on USDT/USD that trade with USDC or USDG.

  • New orders on USDT/USD that trade directly in USD will continue to be supported.

• Existing open orders:

  • All open orders placed (in USDC, USDG and USD) before the effective time stay active, no system cancellation. You can still:

    • Amend

    • Cancel

    • Execute (fills)

Strategy orders - TPSL, Trailing TPSL, Trigger orders:

• Strategy orders that have not yet triggered and use USDC and USDG as the trade currency will be cancelled by the system at the effective time.

• Strategy orders that use USD as the trade currency are not affected.

Trading Bot:

• Active Trading bots using USDC and USDG will be stopped at the effective time, and their associated open orders will be cancelled by the system.

• Bots using USD will continue to run as normal.

• New bots can only be created with USD as the trade currency.

Unaffected:

• USDT/USD remains available for direct USDT ↔ USD spot trading.

• Your existing balances in USDT, USDC, USDG, and USD are not affected.

Alternative trading pairs

To continue trading between USDT and USDC / USDG , please use the following standalone spot pairs:

Before the effective time

• Review your active strategy orders and trading bots. If any are set up with USDC and USDG as the trade currency on USDT/USD pair, migrate them to USD or to the standalone pairs above. This avoids unexpected cancellations at the effective time.

• For assistance, please contact OKX Customer Support.

• OKX reserves the right to amend, revise, or cancel this announcement at any time and for any reason without prior notice.

Thank you for your continued support of OKX.

OKX Team

May 15, 2026