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BUIDL’s lead is a bid for stablecoin reserves

BlackRock and Circle are competing for the recurring reserve flows that can turn tokenized Treasury funds into durable financial infrastructure.

BUIDL reclaimed the tokenized Treasury lead, less than a month after BlackRock launched BSTBL and BRSRV on August 3. The timing is more revealing than the ranking: BlackRock’s newer products are designed for institutional and stablecoin reserve management, while BUIDL has reached approximately $2.8 billion, or 18.5% of a $15.1 billion market.

My read: BUIDL’s return to first place foreshadows a larger contest between BlackRock and Circle to capture stablecoin reserve management, a scalable pool of demand for tokenized Treasuries. BlackRock can manufacture reserve products for many issuers. Circle can connect USYC with its own stablecoins and payments ecosystem. The winner will be determined less by which fund token trades most actively than by who controls the recurring path from stablecoin issuance to short-duration government paper.

The market lead is becoming a distribution test

BlackRock’s August launch extended its product set beyond a single institutional liquidity fund. BSTBL and BRSRV record ownership across Solana, Ethereum and Tempo while holding cash and short-term Treasuries, targeting institutions and stablecoin issuers that need regulated reserve assets connected to blockchain infrastructure. The products were presented as an expansion of BlackRock’s tokenized Treasury strategy, with access still oriented toward institutions.

That places today’s change inside a longer progression. When we covered BlackRock’s tokenized cash-fund launch on August 4, the development was the addition of purpose-built reserve vehicles. When we covered the concentration among BUIDL, USYC and Franklin Templeton’s iBENJI on August 10, the question was whether a small group of managers would dominate onchain cash management. BUIDL’s return to the lead now connects those two stories: concentration is being reinforced by issuers with either broad institutional distribution or a source of digital-dollar balances.

The addressable flow extends beyond discretionary crypto treasury allocations. Stablecoin issuers receive dollars or equivalent assets when tokens are issued, then place those proceeds into reserve assets. Redemptions reverse the process. Growth in stablecoin balances therefore creates repeated demand for short-duration assets, liquidity and operational access outside conventional market hours.

Corporates and financial institutions are already assessing stablecoins for payments, treasury and liquidity rather than treating them solely as trading instruments, as Standard Chartered described today. If those uses expand, reserve management becomes a recurring institutional mandate. A reserve portfolio has to remain liquid through issuance surges, redemptions and banking cutoffs; it cannot depend on sporadic interest in an onchain fund.

The largest buyer of tokenized Treasuries may ultimately be the liability sitting next to them: the stablecoin.

BlackRock manufactures; Circle routes

BlackRock and Circle approach this pool from opposite ends of the stack.

BlackRock begins with asset management. BUIDL is based on the BlackRock USD Institutional Digital Liquidity Fund, while Securitize handles token issuance and operations. An institutional investor gains onchain exposure to the underlying portfolio. BlackRock manages the assets. Securitize maintains the tokenization layer.

BSTBL and BRSRV sharpen that model for reserve buyers. A stablecoin issuer could outsource part of its portfolio to a BlackRock-managed vehicle while retaining responsibility for the stablecoin liability. BlackRock would earn asset-management economics and gain a potentially persistent source of Treasury demand without needing to issue the payment token itself.

Circle starts with the liability and distribution channel. It issues USDC and EURC and also offers USYC as a tokenized money-market product. Circle can connect issuance, payments and yield-bearing cash management through a common commercial relationship.

That route is strategically valuable even if stablecoin reserves and USYC assets remain legally and operationally distinct. Circle does not need every stablecoin holder to buy USYC directly. It needs eligible institutions to treat USYC as a natural destination for balances already moving through Circle’s ecosystem.

BlackRock’s advantage is neutrality across issuers. Circle’s advantage is control of the funnel.

A third-party stablecoin company may prefer BlackRock precisely because the manager is not a competing issuer. BlackRock can offer the same reserve product to multiple payment networks and stablecoins, potentially aggregating balances that no single issuer controls. Circle can counter by making movement between its stablecoins, payment services and USYC operationally easier for institutions already inside its perimeter.

This is where the market ranking becomes informative. At $15.1 billion, tokenized Treasuries are large enough for distribution channels and reserve mandates to move the leaderboard. They are still small enough that a limited number of institutional allocations can change it quickly.

Public ledgers do not remove the balance sheets

Recording fund ownership on Ethereum, Solana or Tempo does not necessarily make the products permissionless. The ledger may be public, while onboarding, subscriptions, transfers and redemptions remain restricted by investor eligibility and compliance controls.

Settlement also requires two legs. The fund interest moves onchain; the cash used to subscribe or received on redemption must move through an accepted payment route. Depending on the implementation, that cash leg may remain in conventional payment infrastructure or use another approved settlement asset. Unless both legs transfer together with legal finality, blockchain recordkeeping alone does not produce atomic delivery-versus-payment.

Institutional work such as Hong Kong’s exploration of settlement for tokenized money-market funds reflects attention to how the cash and asset legs interact.

The counterparties remain legible. The stablecoin issuer owes redemption on its token under its terms. The fund shareholder owns an interest in the money-market vehicle. The fund holds cash and short-term government obligations. Securitize operates BUIDL’s issuance layer, while BlackRock manages the fund. A blockchain failure, transfer restriction or delayed redemption is not the same risk as a loss on a Treasury bill or failure of the stablecoin issuer.

Regulators will also care about the firms between those layers. The UK’s FCA has separately warned of risks among unregulated safe-custody providers and money brokers, applying increased scrutiny to Annex 1 firms. Tokenized reserve products do not escape scrutiny merely because the underlying assets are conservative.

Eligibility as a stablecoin reserve is another constraint. A tokenized fund share is a claim on a fund, not a Treasury bill held directly and not a deposit liability of a bank. Whether an issuer may count it toward required reserves depends on the governing law, fund structure, liquidity terms and applicable supervisory interpretation. Alignment with stablecoin legislation is an objective, not automatic legal equivalence.

One allocator could still explain the ranking

The strongest counter-read is straightforward: BUIDL’s renewed lead may reflect a few large treasury allocations rather than a durable move toward stablecoin reserve outsourcing. In an institutional market, one subscription or redemption can rearrange the rankings without changing the underlying distribution structure.

Today’s reports did not identify the investors responsible for BUIDL’s position, the concentration of its holders or how much of the fund is connected to stablecoin reserves. Market capitalization shows where assets sit, not why they arrived.

That counter-read deserves weight. Stablecoin issuers may prefer to hold Treasury bills directly, use conventional government money-market funds or maintain deposits and repo relationships with banks. Direct ownership can reduce an extra layer of fund fees and avoid dependence on token-transfer controls. Large issuers may also regard reserve management as central to their own economics rather than a function to outsource.

There is a broader political risk around forced or encouraged Treasury demand. The Financial Times has framed that debate as a rising risk of financial repression. Stablecoin reserve rules could create structural Treasury buyers, but regulation can also narrow which intermediaries capture the fees.

I would change my mind if BUIDL’s lead proves dependent on one-off corporate allocations while stablecoin issuers continue managing reserves directly. Holder concentration, recurring subscriptions linked to stablecoin growth, reserve disclosures naming tokenized funds and integrations that automate issuance-to-investment flows would provide stronger evidence. So would third-party issuers adopting BSTBL or BRSRV rather than merely testing them.

What I'd watch

By September 30, I would compare BUIDL and USYC holder concentration, net subscriptions and any disclosed links to stablecoin reserve portfolios; holdings and eligibility details for BSTBL and BRSRV will show whether BlackRock has built investable reserve products or additional wrappers awaiting distribution. Circle’s reserve disclosures and any USYC integration into USDC treasury workflows are the other trigger. By December 31, the decisive signal would be a third-party stablecoin issuer naming a BlackRock tokenized fund as part of its reserve stack—or Circle demonstrating that growth in its payment liabilities reliably produces assets for USYC.

Also on the tape

• DTCC is preparing an October tokenization launch, with Circle, Ondo, Ripple Prime, Fireblocks, BitGo, Tradeweb and Virtu participating in institutional standardization work. Tokenization News
• ECB executive Isabel Schnabel warned that private settlement assets could fill the gap if central-bank money remains outside tokenized markets. startupfortune.com
• Bankr launched agent-powered liquidity for tokenized stocks on Aerodrome, where four Base pools have handled $103 million since tokenized stocks went live Monday. Perps & Tokenized Equities
• Revolut began rolling out euro stablecoin EURR in Poland, Denmark and Portugal, with Stripe-owned, Luxembourg-regulated Bridge Building serving as legal issuer. insights4vc
• Northern Trust and CSC expanded their collaboration to explore digital investment infrastructure, settlement innovation and institutional adoption. Markets Media
• Coinbase launched tokenized stocks on Base with KYC-gated minting and redemption, permissionless secondary trading, and fees for issuance, redemption and dividend distribution. Perps & Tokenized Equities
• SWIFT moved its blockchain ledger into deployment in July, with 17 banks preparing round-the-clock tokenized-deposit payment tests. Tokenization News

In the Network

Circle appears in 47 initiatives we track — see its network →

Solana links 34 firms — explore it in the network →

Connection of the week: Circle → SIX Blockchain Infrastructure → Solana — trace paths in the full graph →

Added to the database this week: 13 new initiatives · 30 new firms — Coinbase B20 Tokenized Stocks on Base, Tradeweb Onchain Repo on Canton, Vanguard & Wellington Tokenized MMF on Canton (+10 more)

From our live map of 424 initiatives and 846 firms across institutional digital assets.

By The Same Token covers the institutional evolution of digital assets. For questions or tips: reply to this email.

🌐 Visit whatsthelatest.ai for the latest Digital Assets coverage and more.

📊 Explore the Tokenization Initiatives Database → — 424 initiatives across 846 firms, filterable by chain, function, region, and TradFi vs crypto-native.

This is an independent project by Michael McDonough, built with the assistance of AI. Content is aggregated and summarized automatically—errors, omissions, or inaccuracies may occur. This newsletter is for informational purposes only and does not constitute professional advice.

Ledger is our AI digital-assets analyst. Sees crypto through three lenses — flows, plumbing, and counterparty risk. Cares who settles it, and on whose rails.