OKX Partners with Standard Chartered to Introduce BlackRock's BUIDL Fund as Institutional Trading Collateral, Accelerating 'On-chain Wall Street'

On April 28, 2026, global crypto exchange OKX announced the integration of BlackRock's 'USD Institutional Digital Liquidity Fund (BUIDL)' as regulated trading collateral. This integration, implemented through Standard Chartered's custody services, represents a significant change that allows institutional investors to maintain positions in the crypto derivatives market while simultaneously securing US Treasury yields.

This collaboration combines a traditional bank-grade custody environment with a dynamic crypto trading environment, providing institutional investors with unprecedented capital efficiency and accelerating the institutionalization of digital assets.

Institutional investors can now store assets with trusted third-party custodians like Standard Chartered instead of depositing them directly on the exchange, while still using them as trading margin within OKX. This provides 'bank-grade' security by protecting assets from exchange insolvency risk, while also lowering barriers to entry for institutions by enabling them to generate stable interest income through BUIDL, a cash-equivalent asset.

Technical Mechanism: The Role of Securitize and Standard Chartered

BUIDL is issued through Securitize, a leader in Real World Asset (RWA) tokenization, and has a Money Market Fund (MMF) structure that invests in US Treasuries and Repo contracts. OKX's risk engine recognizes these tokenized assets stored at Standard Chartered in real-time and reflects them in trading limits, demonstrating a sophisticated workflow that combines traditional financial infrastructure with blockchain technology.

• Tokenization and issuance management of BlackRock BUIDL fund (Securitize)
• Provision of institutional-grade asset storage and regulatory compliance custody services (Standard Chartered)
• Real-time margin trading and risk management using tokenized assets (OKX)

The growth of the BUIDL fund is rapid. As of April 24, 2026, BUIDL's Assets Under Management (AUM) surpassed $500 million, and according to some market data, it has already reached $2 billion. This rapid growth proves that the 'On-chain Wall Street' hypothesis is becoming a reality and suggests that institutions are accepting tokenized Treasuries as a core base asset of the digital asset ecosystem.

In terms of capital efficiency, BUIDL has an overwhelming advantage over existing stablecoins like USDT or USDC. While existing stablecoins do not provide separate returns when deposited as collateral, BUIDL is predicted to offer an annual yield (APY) between 4.0% and 5.5% as of 2026. Therefore, institutional investors can maximize their returns by escaping the past dilemma of having to sacrifice interest income to secure liquidity.

Competitive Landscape and Market Changes

OKX's move is in line with Binance's earlier introduction of BUIDL as off-exchange collateral in collaboration with Securitize on November 14, 2025. However, OKX is adopting a strategy to target more conservative financial institutions and gain an advantage in terms of regulatory compliance by putting its partnership with Standard Chartered, a major global bank, at the forefront.

Market experts expect that the use of these tokenized assets as collateral will mitigate the chronic problem of cascading liquidation risk in the crypto market. This is because using government-backed Treasury-based tokens as collateral instead of volatile cryptocurrencies allows the collateral value to remain stable even during market crashes, thereby improving overall system health.

By the end of 2026, BUIDL's AUM is projected to reach between $5 billion and $8 billion. Long-term predictions suggest it could grow to a scale of $50 billion to $100 billion by 2030, signaling that tokenized Treasuries will establish themselves as the standard collateral type for institutional digital asset trading.

In conclusion, OKX's BUIDL integration is more than just a feature addition; it is a significant milestone in the integration of the digital asset market into the core infrastructure of institutional finance. Institutional investors now have a sophisticated investment environment where they can simultaneously capture the profitability of safe assets and the opportunities of the crypto market, which is expected to become the new standard for market liquidity provision in the future.