BlackRock re-applies for a tokenized fund structure; what does it mean that over $6 billion in U.S. Treasury bonds will be on the blockchain?

In May 2026, the world’s largest asset management firm, BlackRock, submitted two registration filings to the U.S. Securities and Exchange Commission for tokenized money market funds, planning to tokenize its approximately $6.1 billion U.S. Treasury liquidity fund—the BlackRock Select Treasury Based Liquidity Fund (BSTBL)—and issue digital share classes on the Ethereum blockchain. This move is seen as a strategic reinforcement of on-chain financial infrastructure following the successful operation of BlackRock’s first tokenized fund, BUIDL. Meanwhile, BlackRock also applied to establish another new multi-chain tokenized money market fund, BRSRV, targeting investors managing digital assets via crypto wallets and stablecoins.

The Event Itself: What kind of applications did BlackRock submit?

The applications submitted by BlackRock include two related but differently positioned product structures. The first aims to tokenize the existing approximately $6.1 billion BSTBL fund by adding an Ethereum ERC-20 token share class on top of its traditional share classes, with official shareholder records maintained on-chain by The Bank of New York Mellon. The second application is for BRSRV, a newly created tokenized money market fund that will operate across multiple blockchains, serving emerging investors managing assets through on-chain wallets and stablecoins.

Notably, both funds adopt a legal structure based on “tokenized shares” rather than “newly issued tokens”—overlaying blockchain ownership records onto a regulated traditional fund framework. This means that the tokens held by investors on-chain represent actual, SEC-regulated fund shares, not standalone crypto assets. This structure offers significant advantages in terms of compliance and auditability.

How does the new product differ from BUIDL in terms of tokenized funds?

BlackRock’s BUIDL, launched in partnership with Securitize in 2024, is its first tokenized money market fund, now growing to approximately $2.3 billion to $2.58 billion in assets, and is one of the key institutional cases for tokenized finance. BUIDL’s portfolio mainly consists of short-term USD assets like U.S. Treasury bills, repurchase agreements, and cash, with a structure highly similar to BSTBL.

However, the newly applied products show two key structural differences. First, BSTBL involves tokenizing an existing $6.1 billion fund, effectively “bringing it on-chain,” which is a higher strategic move compared to BUIDL’s experimental creation from scratch. Second, BRSRV explicitly targets stablecoin holders, deploying across multiple chains to directly tap into the digital dollar economy, whereas BUIDL’s clients are primarily institutional investors seeking on-chain allocations. These differentiated positions form a “dual-wheel” layout in BlackRock’s tokenized fund strategy.

Why is the compliance architecture of tokenized funds so important?

The most industry-significant detail in BlackRock’s filings is its new fund architecture that integrates on-chain ownership records with regulated financial systems. According to disclosures, this architecture connects blockchain-based fund share ownership with regulated transfer agents and investor onboarding systems, enabling on-chain operations to align with compliance frameworks.

Specifically, Securitize’s subsidiary, Securitize Transfer Agent, LLC, will maintain official shareholder records on a public blockchain, meaning the on-chain token holdings are directly incorporated into the regulated fund registration system. This design addresses the longstanding compliance challenge faced by RWA projects: “on-chain holdings ≠ off-chain rights.” Investors’ tokens are no longer just data on a chain but are legally binding fund rights certificates.

Industry views this architecture as a critical step toward “regulated on-chain capital markets scaling to institutional levels.” If approved by the SEC, it could serve as a replicable compliance blueprint for other traditional financial institutions entering the tokenization space, profoundly impacting the infrastructure of the entire RWA industry.

Who are the target clients for the new funds? What market changes are occurring?

Both funds in BlackRock’s application list “stablecoin holders” as their direct target clients. Behind this strategic choice is a growing structural contradiction in the digital dollar economy: the total circulating stablecoins exceeded $320 billion by May 2026, yet most stablecoins remain idle in wallets or trading accounts with zero yield. For institutional stablecoin holders, this is especially problematic—they need reserve assets that can earn U.S. Treasury yields while maintaining on-chain composability and near-instant settlement.

Since 2025, the passage of the “Genius Act” has further accelerated this demand by establishing a federal regulatory framework for USD-pegged stablecoins and boosting the need for compliant on-chain reserve assets. Against this backdrop, BSTBL and BRSRV fill a market gap, offering stablecoin issuers, DeFi protocols, and institutional crypto investors a middle ground between “idle on-chain cash” and “traditional bank accounts.”

How is the competitive landscape of RWA tokenization evolving?

BlackRock’s timing for these applications coincides with a rapid expansion phase in the RWA tokenization sector. According to rwa.xyz data, as of mid-May 2026, the total locked value of tokenized U.S. Treasuries on-chain reached $153.5 billion, a 280% increase from about $3.9 billion 16 months earlier. The overall RWA tokenization market surpassed $30.9 billion, up approximately 203% year-over-year.

However, amid this growth, the competitive landscape is shifting subtly. On May 4, 2026, Circle’s tokenized money market fund USYC surpassed BlackRock’s BUIDL with about $3 billion in assets under management, becoming the largest tokenized money market fund globally. Additionally, J.P. Morgan filed for its second tokenized money market fund, JLTXX, on May 12, and Franklin D. Dutton is exploring on-chain tokenization opportunities through a partnership with Payward. The RWA sector is evolving from a “single leader” to a “multi-competitor” landscape.

How do on-chain data reflect the structural shifts in capital flows?

As of May 2026, three notable structural features are evident in the inflows into the tokenized U.S. Treasury market. First, the total market cap of tokenized Treasuries on Ethereum has exceeded $8 billion, roughly doubling since November 2025, indicating that mainstream public chains have become the preferred deployment layer for institutional capital.

Second, the total locked value of tokenized Treasuries ($153.5 billion) far exceeds the market cap of RWA tokens ($30.9 billion), revealing that investors tend to hold the underlying U.S. Treasury assets registered on-chain rather than just the tokenized share classes. This reflects a “asset layer” and “token layer” two-tier structure: the former directly held by institutions, the latter by DeFi protocols and retail investors.

Third, the on-chain distribution of tokenized Treasuries is highly concentrated. Data from May 2026 shows that just Circle and BlackRock account for over 60% of the entire tokenized Treasury market, forming a “bimodal + long tail” competitive pattern. This concentration means that the strategic moves of leading institutions (like BlackRock’s new fund application) will significantly influence product development and capital flow directions across the sector.

How is tokenization evolving from “narrative” to “infrastructure”?

Alongside BlackRock’s application, Securitize disclosed a key industry data point: the global RWA market has surpassed $30 billion, indicating that the industry is shifting from early experimentation toward institutional-grade infrastructure, interoperability, and compliant on-chain financial systems.

This aligns closely with the public statement of BlackRock COO Rob Goldstein, who recently emphasized that the tokenization of capital market instruments remains in a very early stage, but due to the small base, future growth will be measured in “multiples” rather than percentages.

Goldstein also offered a deeper projection: artificial intelligence and cryptocurrencies will mutually reinforce in ways not yet fully understood—when enterprise AI agents need to execute trades, they won’t log into bank accounts but will operate through digital rails. This demand will ultimately drive exponential growth in digital assets and transform on-chain financial infrastructure from “optional tools” into “essential pipelines.” From this perspective, BlackRock’s application is not only about stablecoin cash pools but also about laying a key foundation for the next-generation digital economy.

What potential risks and industry trends does the new application face?

While generally viewed as positive, several constraints warrant cautious attention. First, regulatory approval remains uncertain. Although the “Genius Act” and Securitize’s compliant architecture provide a relatively clear path for tokenized funds, the SEC’s legal classification of “tokenized shares” and specific investor onboarding requirements are still unclear. Jurisdictional differences in attitudes toward RWA could also constrain cross-border capital flows.

Second, the evolving competitive landscape presents challenges. Circle’s USYC’s rapid rise shows that new entrants focused on tokenization can challenge traditional giants in scale. While BlackRock’s brand and asset management strength are formidable, it still faces competition in on-chain product reach and liquidity integration.

Third, macro interest rate changes are a concern. In April 2026, U.S. CPI rose 3.8% year-over-year, higher than 3.3% in March, fueling expectations of rate hikes. If U.S. rates continue rising, on-chain Treasury yields will become more attractive, benefiting tokenized fund inflows; if rates decline, existing capital may reassess allocations.

Overall, 2026 is poised to be a pivotal year for tokenized finance, transitioning from “institutional testing” to “scaling deployment.” BlackRock’s applications, combined with BUIDL’s success, will provide a reference framework for traditional financial institutions. The critical point of RWA tokenization moving from experimentation to explosion appears to be accelerating.

Summary

In May 2026, BlackRock submitted applications for two tokenized money market funds to the SEC, planning to tokenize its approximately $6.1 billion BSTBL Treasury fund and establish a multi-chain fund BRSRV aimed at stablecoin holders, both supported by Securitize’s on-chain infrastructure. The core breakthrough lies in its compliance architecture—integrating blockchain-based share ownership directly into regulated transfer agent systems, solving longstanding legal rights issues in RWA projects.

Against the backdrop of total tokenized U.S. Treasuries surpassing $153.5 billion and the RWA market exceeding $30.9 billion, traditional financial institutions are increasingly engaging in tokenization, with leading players like BlackRock driving toward institutional-scale infrastructure.

FAQ

Q1: What are the main differences between BlackRock’s BSTBL and BUIDL?

BUIDL, launched in 2024, is BlackRock’s first tokenized money market fund, created from scratch, with assets around $2.3 to $2.58 billion. BSTBL involves tokenizing an existing $6.1 billion U.S. Treasury fund, with a higher strategic level, and also introduces BRSRV, a multi-chain fund targeting stablecoin holders.

Q2: Why is the compliance architecture of tokenized funds important?

It addresses the core issue that on-chain holdings do not automatically equate to off-chain rights. Securitize, as a regulated transfer agent, maintains official shareholder records on a public chain, ensuring that on-chain tokens are legally recognized fund rights.

Q3: How large is the tokenized RWA market as of 2026?

By mid-May 2026, the total locked value of tokenized U.S. Treasuries reached $153.5 billion, with the overall RWA tokenization market exceeding $30.9 billion, up about 203% year-over-year.

Q4: Who are the main competitors in the RWA tokenization sector?

Key players include BlackRock (BUIDL, about $2.58 billion), Circle (USYC, about $3 billion), Franklin D. Dutton, and J.P. Morgan (JLTXX), forming a “bimodal + long tail” competitive landscape.

Q5: How do traditional financial institutions view the long-term potential of tokenization?

BlackRock COO Rob Goldstein states that capital market instrument tokenization is still very early, but due to the small base, growth will be in “multiples” rather than percentages. He also believes emerging applications like AI agents will exponentially boost on-chain financial infrastructure demand, transforming it from optional to essential.