BlackRock’s Tokenized Treasury Fund Expands to BNB Chain as Binance Approves It for Collateral

• BUIDL expands to BNB Chain, adding faster settlement and lower transaction costs.
• Binance approves BUIDL as off-exchange collateral for institutional trading.
• Tokenized Treasuries gain broader utility across DeFi and institutional systems.

BlackRock’s tokenized U.S. Treasury fund, BUIDL, has expanded to the BNB Chain in a development that broadens access to what is currently the largest tokenized real-world asset on public blockchains. The move introduces a new share class for qualified investors seeking onchain exposure to short-term U.S. Treasury yields while providing additional settlement efficiency. 

Alongside the expansion, Binance has authorized BUIDL for use as off-exchange collateral, allowing institutional traders to support positions on the exchange without relinquishing custody. The combination marks a big change in how tokenized government securities are being integrated into centralized and decentralized financial infrastructure.

BNB Chain Integration Adds Faster Settlement and Lower Costs

The addition of BUIDL to the BNB Chain is supported by Securitize and Wormhole, the infrastructure firms that handle the fund’s regulatory and technical operations. According to the announcement, the new share class allows qualified investors to move BUIDL across the network with lower fees and faster settlement compared to other chains where the fund is already present. The structure also enables continuous peer-to-peer transfers, making the asset easier to deploy within decentralized applications or institutional workflows.

Securitize manages the fund’s tokenization and transfer agency functions and oversees the administration of more than $4 billion in assets. The firm stated that bringing BUIDL to BNB Chain, combined with its new collateral functionality on Binance, provides additional utility that traditional off-chain instruments do not offer.

Binance Grants Approval for Off-Exchange Collateral Use

In a parallel update, Binance confirmed it has approved BUIDL for use as collateral in institutional trading arrangements. With the approval, firms can secure trading positions while retaining control of their assets, rather than transferring them directly into exchange custody. Binance said the step aligns with its focus on risk-managed access for institutions operating in digital asset markets.

The authorization follows other institutional developments surrounding BNB Chain, including earlier indications of adoption from government-linked financial bodies.

Tokenized Assets Gain Broader Institutional Functionality

BNB Chain stated that tokenized real-world assets are becoming programmable financial tools that can interact with exchanges, custodians, and decentralized protocols. The chain emphasized that this shift increases capital efficiency for institutions and expands the range of available trading strategies.

The launch also shows broader activity around tokenized U.S. Treasury products. The network noted that recent upgrades on other chains, such as the XRPL, have been driven by increased demand for programmable yield-bearing assets. According to Securitize, BUIDL’s presence on BNB Chain and its approval for collateral use are expected to increase accessibility and enable new applications for regulated tokenized Treasuries.