BlackRock’s $2.5Bn tokenized Treasury fund has moved into Binance’s collateral system, pulling a Wall Street-grade instrument straight into everyday crypto trading.
BlackRock, Securitize, and Binance announced on November 15 that the BlackRock USD Institutional Digital Liquidity Fund (BUIDL) is now approved as off-exchange collateral for institutional clients.
A new share class of the fund also went live on BNB Chain on Friday. The update gives larger traders a way to post yield-bearing US Treasury exposure while they execute deals on Binance, and they can use the same asset inside one of the busiest DeFi networks in the market.
BREAKING: BlackRock’s $BUIDL ($2.5B tokenized money market fund) is now on-chain via Binance, letting institutions use it as collateral and move USD instantly. pic.twitter.com/zPuAUn9nWv
— Real World Asset Watchlist (@RWAwatchlist_) November 14, 2025
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Why Is Binance Adding BlackRock’s BUIDL to Its Off-Exchange Collateral System?
Binance has added BUIDL to its off-exchange collateral system, a setup that works through banking triparty arrangements and its custody partner, Ceffu.
The exchange says demand has been building for months. “Our institutional clients have asked for more interest-bearing stable assets they can hold as collateral while actively trading on our exchange,” said Catherine Chen, who leads the VIP and Institutional division at Binance.
Binance already allows other tokenized yield products, including USYC and cUSDO, to be used in the same structure. BUIDL is now the first BlackRock product added to that collateral pool.
BUIDL is BlackRock’s on-chain institutional liquidity fund. It launched in March 2024 as the firm’s first tokenized product on a public blockchain and is issued through Securitize.
The change allows VIP and institutional clients to keep their BUIDL tokens with a regulated bank or with Ceffu, and still get trading credit on Binance.
They no longer need to hold those funds on the exchange.
BUIDL is BlackRock’s on-chain institutional liquidity fund. They launched it in March 2024 as the firm’s first tokenized product on a public blockchain, issued through Securitize.
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What Makes BUIDL the Largest Tokenized US Treasury Fund on Public Blockchains?
The fund invests in US cash, short-term Treasuries, and repo. It aims to hold a stable $1 value and pays daily dividends to qualified investors.
The fund has since become the largest tokenized US Treasury product on public blockchains, with more than $2.5Bn in assets as of mid-November 2025.
Earlier this year, the fund moved ahead of rivals like Hashnote’s USYC and Franklin Templeton’s BENJI. Its growth also helped push the broader tokenized Treasuries market to roughly $8.6–$8.7Bn, based on recent RWA data.BUIDL already runs on several blockchains, including Ethereum, Arbitrum, Polygon, Optimism, Avalanche, Solana, and Aptos.
The addition of a BNB Chain share class brings that total to nine networks. It also shows how clear the multi-chain plan has become. According to Securitize, about two-thirds of BUIDL’s assets now sit outside Ethereum.
On Friday, BNB traded near $920. It was slightly higher on the day after a week marked by sharp swings across major cryptocurrencies.
Carlos Domingo, the co-founder and CEO of Securitize, said BUIDL’s wider reach and its new role as collateral “further extends its reach and utility” and shows that regulated real-world assets can play a practical part in day-to-day trading.
Even so, the expansion has pushed some attention back toward BNB and the wider BNB Chain ecosystem at a time when the broader market has been volatile.
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