BlackRock Files for Tokenized Money-Market Vehicle as TradFi Eyes On-Chain Cash

A quiet SEC filing did what press releases could not. On July 9, 2026, BlackRock submitted Form N-1A for the BUIDL Treasury Trust, a tokenized fund holding short-dated T-bills with daily NAV on Ethereum and Stellar. Shares will settle T+0 to qualified wallets, and redemptions credit USDC or PYUSD within minutes. Minimum ticket is $5 million, but the structure allows approved distributors to fractionalize for smaller desks.

The plumbing is the story. Bank of New York Mellon will custody the bills, while smart contracts handle transfer agency. That cuts three intermediaries and lets treasurers sweep idle cash into yield-bearing tokens after U.S. market close. Early testers include two Fortune 100 firms that moved $80 million into the pilot last quarter, earning 5.22% versus 4.91% in legacy sweeps.

Market reaction was surgical. Tokenized T-bill TVL jumped $420 million in 48 hours, and on-chain repo rates fell 15 bps as supply of quality collateral rose. MakerDAO’s RWA vaults saw $60 million in outflows to BUIDL, a sign institutions prefer BlackRock paper over DeFi wrappers when both pay the same.

Risks are legal, not technical. The fund relies on Reg D and 3(c)(7) exemptions, so retail access stays blocked. A court challenge to token-as-security could freeze transfers, though the trust structure mirrors existing private funds. For traders, the impact is collateral velocity. T+0 Treasuries mean basis trades can post and recall margin inside one session, tightening spreads across crypto and FX.

Wall Street just told clients that cash can live on-chain. When the largest asset manager tokenizes the safest asset, the rest of the street follows.

#Tokenization #BlackRock #Treasuries #RWA #DeFi