BlackRock

BlackRock, the world's largest asset manager with more than $11 trillion in assets under management, has made Solana a central pillar of its tokenized money market strategy — establishing the blockchain as a settlement layer for institutional-grade fixed-income products that collectively represent billions of dollars in on-chain assets.

BUIDL: The Fund That Brought Institutional Tokenization to Scale

BlackRock's first on-chain fund, the BlackRock USD Institutional Digital Liquidity Fund (ticker: BUIDL), launched on Ethereum in March 2024 in partnership with Securitize, the SEC-registered transfer agent and tokenization platform. BUIDL holds cash, short-term U.S. Treasury securities, and overnight repurchase agreements — effectively a money market fund whose shares are recorded and transferred on blockchain rails.

By the time BlackRock expanded BUIDL to Solana on March 25, 2025, the fund had already grown to $1.7 billion in assets under management, making it the largest tokenized money market fund in existence at that point. The Solana expansion brought BUIDL to seven blockchains in total — Ethereum, Polygon, Aptos, Arbitrum, Optimism, Avalanche, and Solana — but Solana was a deliberate choice given its combination of high throughput, sub-second finality, and growing institutional infrastructure.

Carlos Domingo, co-founder and CEO of Securitize, noted at the time of the Solana expansion: "In the year since BUIDL's launch, we've experienced significant growth in demand for tokenized real-world assets." By 2026, BUIDL's AUM had grown to more than $2.6 billion — roughly four times the size of its nearest competitors in the tokenized Treasury market at its inception.

BUIDL is permissioned by design. Ownership is tracked via Securitize-managed whitelisted wallets tied to verified investor identities, and transfer agents retain the ability to restrict transfers, freeze, or reissue tokenized shares under applicable regulations. The fund is oriented entirely toward institutional participants.

BRSRV: Tokenized Reserves for the Stablecoin Era

In August 2026, BlackRock launched its most Solana-specific product to date: the BlackRock Daily Reinvestment Stablecoin Reserve Vehicle, or BRSRV. The fund was announced via a prospectus filed with the SEC on August 1, 2026, with the product going live on August 3.

BRSRV was designed from the outset to serve as qualifying reserve assets for stablecoin issuers. Its legal structure maps directly to the reserve requirements defined under the GENIUS Act — the U.S. legislation that created a federal regulatory framework for payment stablecoins — making it one of the first tokenized fund products explicitly architected around the new law. The fund holds cash, short-term U.S. Treasury securities, and overnight repurchase agreements backed by Treasuries. It carries zero exposure to digital assets.

Ownership of BRSRV shares is recorded across three blockchains: Solana, Ethereum, and Tempo. The $3 million minimum initial investment makes clear this is an institutional offering, not a retail product. As with BUIDL, Securitize serves as transfer agent, managing whitelisted wallets and verified identities for all participants.

Jon Steel, Global Head of Product and Platform at BlackRock Cash Management, framed the product at launch: "Cash remains a foundational building block for investors, corporations, and financial institutions." BRSRV is the on-chain instantiation of that principle — U.S. Treasuries and repurchase agreements made programmable and composable within the stablecoin ecosystem.

The product's context: BlackRock already manages approximately $60 billion in reserve assets for Circle, whose USDC accounts for roughly one quarter of the $300 billion stablecoin market. BRSRV gives stablecoin issuers a direct, blockchain-native channel to hold GENIUS Act-compliant reserves without routing through traditional custodial intermediaries.

BSTBL: On-Chain Shares of a Treasury Liquidity Fund

Alongside BRSRV, BlackRock launched a second product on August 3, 2026: OnChain Shares of the BlackRock Select Treasury Based Liquidity Fund, trading under the ticker BSTBL. Where BRSRV targets stablecoin reserve compliance specifically, BSTBL is positioned as a broader-purpose tokenized treasury liquidity product for investors, corporations, and financial institutions seeking capital preservation with on-chain settlement.

BSTBL follows the same multi-chain architecture — Solana, Ethereum, and Tempo — and the same Securitize transfer agent infrastructure. The fund provides exposure to BlackRock's Select Treasury Based Liquidity Fund, which operates under Rule 2a-7 of the Investment Company Act of 1940, the same regulatory framework that governs traditional money market funds.

Securitize: The Shared Infrastructure Layer

Across all three BlackRock tokenized products on Solana — BUIDL, BRSRV, and BSTBL — Securitize functions as the critical middleware. The firm handles investor whitelisting and KYC verification, records on-chain ownership, and enforces transfer restrictions mandated by securities law. Securitize was chosen by BlackRock in part because of its SEC-registered status as a transfer agent and its established infrastructure for compliant tokenized securities.

What BlackRock's Solana Presence Signals

BlackRock's choice to include Solana in all three tokenized fund deployments reflects a market judgment about the blockchain's institutional readiness. Solana's architecture — high transaction throughput, low and predictable fees, and a growing ecosystem of regulated custody and wallet infrastructure — made it viable for products where settlement finality and composability matter as much as compliance.

Together, BUIDL, BRSRV, and BSTBL represent the most significant institutional tokenized asset presence on Solana by assets under management. They also illustrate how the tokenized real-world asset category is evolving: from proof-of-concept experiments to products explicitly designed around new U.S. financial law, with Solana as one of a small number of blockchains operating at that layer.

For DeFi protocols operating on Solana, the presence of GENIUS Act-compliant tokenized Treasuries opens composability pathways — regulated on-chain collateral that could plug into lending markets, structured products, or treasury management tools without requiring off-chain settlement.