Which CEX added BUIDL collateral?

TLDR

Binance has added BlackRocks BUIDL as off?exchange collateral for institutional trading, confirmed in an exchange update.

1. It works via banking triparty agents and Ceffu custody, not held on the exchange, per a market report.
2. Binance cites client demand for interest?bearing stable collateral, noted in a statement.
3. A new BUIDL share class will launch on BNB Chain to widen access, per a coverage.

Deep Dive

1. Off?Exchange Collateral

The setup lets institutions post BUIDL while keeping assets with a bank or custodian rather than on Binance. This reduces venue custody concentration and preserves auditability and segregation of funds, aligning with how Treasuries are pledged in traditional markets. The mechanism pairs banking triparty arrangements with Binances custody partner Ceffu, as described in the market report above.

2. Who It Serves

Binance framed the move as meeting institutional VIP demand for interest?bearing, stable?priced collateral, enabling capital efficiency without compromising compliance. This rationale was outlined in a Binance statement covered in the article above.

3. RWA Scaling

This is part of a broader trend of centralized exchanges adopting tokenized Treasuries as collateral and expanding BUIDLs footprint. The program includes a new share class on BNB Chain to increase reach, per the coverage above. BUIDLs scale around the time of the announcement was reported at roughly $2.5 billion by outlets such as a business report.

Conclusion

The answer is Binance. It now accepts BUIDL as off?exchange collateral through triparty banking and Ceffu custody, responding to institutional demand and expanding RWA utility. This should improve capital efficiency while keeping custody and compliance controls outside the venue.