Key Takeaways
- Blackrock’s BUIDL fund holds about $2.8 billion in assets, or 18.5% of the $15.1 billion market.
- BUIDL lost the top spot to Circle’s USYC in March 2026 before reclaiming it by late August.
- Securitize manages BUIDL across eight blockchains, including Ethereum, Solana and Aptos.
Back on Top, Barely
The largest tokenized Treasury fund in the world changed hands twice in six months, and Blackrock just won it back. BUIDL, formally the USD Institutional Digital Liquidity Fund, has grown to approximately $2.8 billion in assets under management, putting it back ahead of Circle’s USYC as the single largest product in the category.
The lead is not a blowout by any stretch of the imagination given that BUIDL’s $2.8 billion works out to about 18.5% of the entire $15.1 billion tokenized Treasury market, meaning the rest of that market, USYC included, is splitting the remaining 81.5% between them.
What BUIDL Actually Is
BUIDL launched in March 2024 as Blackrock’s first tokenized fund, built and administered by Securitize, which now handles asset servicing across eight blockchains including Ethereum, Solana, Aptos and BNB Chain. Each token targets a stable $1 net asset value and accrues yield daily through a rebase mechanism, effectively turning a money-market fund into something that trades and settles like a crypto asset around the clock.
The fund’s underlying holdings, cash, short-term U.S. Treasury bills and repurchase agreements, are about as conservative as institutional finance gets, which is likely why Moody’s assigned BUIDL a top AAA-mf rating earlier this year.
Securitize itself has leaned hard into the BUIDL relationship, posting record first-quarter 2026 revenue on the back of asset-servicing fees tied largely to Blackrock’s fund and its own listing on the NYSE.
The Competition Isn’t Standing Still
BUIDL’s lead is real but fragile. Circle’s USYC briefly overtook it in March, and the broader tokenized Treasury market has kept growing underneath both of them, with new entrants like Franklin Templeton and Ondo Finance chipping away at the same pool of institutional demand Bitcoin.com News has tracked climbing past $15 billion this year.
Every basis point of that market represents real money moving off traditional money-market funds and onto public blockchains, a trend that has continued regardless of where bitcoin’s price happens to be trading on any given day.
Tokenized Treasuries are not a crypto bet; they are traditional, yield-bearing government debt wrapped in blockchain infrastructure, which is exactly why institutions comfortable with Blackrock but wary of bitcoin’s price swings have been some of the fastest adopters.
In any case, reclaiming the top spot for Blackrock seems to be less about bragging rights than about defending the on-ramp it built. Securitize, Ethena and Uniswap Labs have all built additional rails around BUIDL this year, from round-the-clock atomic swaps to direct trading access, each one making it a little easier for institutional cash to flow onto BUIDL specifically rather than a rival fund.
