Within OKX's margin system, BUIDL is treated as fungible with USD, USDC, and other dollar-denominated stablecoins.
Crypto News
OKX has integrated BlackRock's BUIDL tokenized U.S. Treasury fund into its collateral framework, allowing eligible institutional and VIP clients to use the yield-bearing asset as trading margin without transferring it out of Standard Chartered custody.
The arrangement, announced Tuesday, lets clients post BUIDL as collateral held with Standard Chartered while actively trading on OKX Middle East, or deposit it directly on the exchange. The companies described it as the first off-exchange tokenized collateral framework backed by a globally systemically important bank, known as a G-SIB.
Within OKX's margin system, BUIDL is treated as fungible with USD, USDC, and other dollar-denominated stablecoins. Clients retain ownership of the underlying asset and its yield throughout, according to Rifad Mahasneh, CEO of OKX Middle East, North Africa and Commonwealth of Independent States.
Standard Chartered holds client collateral separately from OKX's own assets. OKX manages real-time margining and liquidation through its internal risk systems, Mahasneh said, adding that the structure is aligned with traditional finance standards.
The framework builds on OKX's existing collateral mirroring program with Standard Chartered, launched last year to support the exchange's European expansion. Mahasneh said the new integration marks a step beyond passive holding, demonstrating how tokenized assets can be actively deployed within live trading infrastructure.
BlackRock's BUIDL fund is tokenized by Securitize and invests in cash, U.S. Treasury bills and repurchase agreements, with yield distributed on-chain. Mahasneh described OKX as the only global digital asset exchange to combine regulated custody, a major asset manager, and a G-SIB partner in a single framework.
The framework is now live for eligible clients through OKX Middle East. The exchange plans to expand it based on jurisdiction and demand, Mahasneh said. The integration adds to a broader industry effort to turn tokenizedRWA products into functional market infrastructure rather than passive holdings.
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