BlackRock, the world’s largest asset manager with around $14 trillion under management, just filed paperwork to launch two tokenized money-market funds aimed squarely at people who keep their cash in stablecoins instead of bank accounts. The May 8 filings with the U.S. SEC come as the GENIUS Act blocks stablecoin issuers from paying interest, leaving billions of dollar-pegged tokens sitting idle in crypto wallets with zero yield. Here’s what these new funds actually do, why they live on Ethereum, and what changes if you’re holding USDC or USDT.
What BlackRock actually filed
BlackRock submitted two separate filings with the U.S. Securities and Exchange Commission on May 8.
The first is a digital share class tied to the roughly $6.1 billion BlackRock Select Treasury Based Liquidity Fund, ticker BSTBL.
That fund already exists and invests in cash, U.S. Treasury bills, notes, and other short-term securities with maturities of 93 days or less.
The new tokenized shares will trade on Ethereum alongside the traditional ones, with BNY Mellon keeping the official register on-chain using the ERC-20 token standard. Think of it as the same boring, regulated fund — just with a blockchain version of the shareholder list.
The second fund is built from scratch
The second product is a brand-new vehicle called the BlackRock Daily Reinvestment Stablecoin Reserve Vehicle, or BRSRV. Unlike BSTBL, it isn’t a digital wrapper around an old fund.
It’s been designed from day one to live across multiple blockchains, with a $3 million minimum investment and Securitize Transfer Agent LLC maintaining the ownership records, according to CoinDesk’s reporting on the filings.
The underlying assets are nearly identical — cash, short-dated Treasuries, overnight repo agreements — but the target customer isn’t a pension fund.
It’s stablecoin issuers looking for a compliant place to park reserves under the GENIUS Act, the U.S. law that requires stablecoin issuers to hold safe, dollar-equivalent backing.
Why this is really about stablecoins
This is the part you should pay attention to. Stablecoins are tokens pegged to the U.S. dollar, like USDC and USDT, and the GENIUS Act — the U.S. law signed last year regulating them — bans issuers from paying interest to holders.
So if you parked $10,000 in USDC, you earned exactly zero. That’s a lot of dormant money: the global stablecoin market sits above $300 billion.
BlackRock’s pitch with BSTBL is that you can swap idle stablecoins for tokenized fund shares and collect yield from short-term government bonds, all on-chain, all regulated. It’s a money-market fund that lives in your wallet.
The BUIDL backstory
BlackRock isn’t starting from zero here. The firm launched its first tokenized fund, BUIDL, on Ethereum in March 2024 with crypto firm Securitize.
We’ve seen it grow to roughly $2.5 billion across eight blockchains, and it now sits as accepted collateral on platforms like Binance for institutional traders. BUIDL pays daily interest backed 1:1 by Treasury bills, and it’s already used inside DeFi protocols.
The new filings extend that model in two directions: deeper into traditional fund structures with BSTBL, and outward to the crypto-native crowd with BRSRV. We think that split tells you exactly who BlackRock wants in the door.
Ethereum keeps winning the institutional race
It’s no accident that both products lean on Ethereum. Former Ethereum developer Eric Connor reacted to an earlier BlackRock filing on X by saying “Ethereum just scored a monster win”, calling it the biggest real-world asset flow to the network yet.
BlackRock’s own 2026 thematic outlook showed Ethereum hosting more than 65% of tokenized assets across blockchains. We don’t think that’s a coincidence — it’s where the regulated stack already lives.
Bitmine chair Tom Lee has gone further, comparing the current shift to 1971 when the U.S. left the gold standard, arguing that tokenization “is making almost every asset synthetic.” The broader tokenized real-world asset market has now crossed $30 billion, up roughly 410% since early 2025.
What’s still uncertain
The SEC hasn’t approved either filing yet, and BlackRock hasn’t named a launch date. There’s also a regulatory cliff coming: the Clarity Act markup, which would formally cut off “hold and earn” yield products built on top of stablecoins.
Bloomberg’s reporting on the filings notes the new funds slot neatly into that gap. If you’re watching from the sidelines, the real test isn’t whether these products launch — they probably will — but whether the broader stablecoin yield landscape reshapes around them.
For now, BlackRock CEO Larry Fink’s long-running thesis that “every financial asset will eventually be tokenized” is starting to look less like a slide and more like a roadmap. We’ll be watching the SEC docket closely.
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