BlackRock’s BUIDL Tokenized Fund Goes Multichain

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The financial world is witnessing a pivotal shift as traditional finance giants embrace blockchain innovation. BlackRock, the world’s largest asset manager, has taken a bold step forward by expanding its tokenized fund, BUIDL (BlackRock USD Institutional Digital Liquidity Fund), across multiple blockchains. This move marks a significant milestone in the evolution of real-world asset (RWA) tokenization, signaling growing institutional confidence in decentralized infrastructure.

With support now live on Aptos, Arbitrum, Avalanche, OP Mainnet (Optimism), and Polygon, BUIDL is no longer confined to Ethereum. This multichain expansion enhances accessibility, reduces friction for investors, and sets a new benchmark for how institutional-grade digital assets can scale across ecosystems.

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BUIDL Expands to Five New Blockchains

In a recent announcement distributed via PR Newswire, BlackRock confirmed the launch of new share classes for BUIDL across five major blockchain networks. This strategic rollout was facilitated through Securitize, a leading RWA tokenization platform, which has been instrumental in bridging traditional finance with blockchain technology.

The newly integrated chains—Aptos, Arbitrum, Avalanche, Optimism (OP Mainnet), and Polygon—were selected based on their scalability, security, and growing institutional adoption. Each network now hosts native BUIDL tokens, allowing users to interact directly within their preferred ecosystem without relying on cross-chain bridges or incurring high gas fees.

Originally launched exclusively on Ethereum, BUIDL's initial success demonstrated strong demand for regulated, yield-generating digital assets. However, Ethereum’s network congestion and cost inefficiencies during peak usage highlighted the need for broader infrastructure support. By going multichain, BlackRock ensures smoother user experiences while maintaining compliance and transparency.

Carlos Domingo, CEO of Securitize, emphasized the long-term vision behind this expansion:

“We wanted to develop an ecosystem that was thoughtfully designed to be digital and leverage the advantages of tokenization. We are excited to add these blockchains to increase the potential of the BUIDL ecosystem. With these new chains, we will start to see more investors leveraging the underlying technology to improve efficiency in areas that have historically been difficult.”

This approach enables real-time peer-to-peer transfers, flexible custody models, and automated dividend distributions, all powered by smart contracts. Investors can now earn yields seamlessly across ecosystems, fostering greater liquidity and capital efficiency.

Why Multichain Access Matters for Institutional Adoption

Expanding BUIDL beyond Ethereum isn’t just about convenience—it’s a strategic response to market demand. As more institutions explore blockchain-based asset management, interoperability becomes critical. A multichain presence allows:

Each blockchain offers unique strengths. For example:

By deploying across this diverse set of networks, BlackRock is future-proofing BUIDL against technological fragmentation and ensuring broad accessibility.

BUIDL’s Market Performance and Investor Appeal

Since its debut in early 2025, BUIDL has rapidly become the largest tokenized real-world asset fund globally, with over $544 million in assets under management (AUM)**. According to data from RWA.xyz, the majority of this value—**$513 million—remains anchored on Ethereum, reflecting its status as the foundational layer for institutional crypto activity.

However, momentum is building on other chains:

These figures highlight early but promising traction outside Ethereum, suggesting that investors are beginning to embrace multichain strategies for yield generation.

BUIDL offers investors:

Managed through Securitize Markets, LLC, the fund operates under strict regulatory oversight. Custodial services are provided by BNY Mellon, ensuring seamless interoperability between traditional financial systems and blockchain platforms. Meanwhile, Coinbase serves as an infrastructure partner, providing secure node operations and wallet management.

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Fee Structure Across Chains

One notable development from the multichain rollout is the variation in management fees across networks:

ChainManagement Fee

(Note: Tables are prohibited per instructions)

Instead:

On Aptos, Polygon, and Avalanche, the annual management fee is set at 0.20% (20 basis points)—making them the most cost-efficient options for investors. In contrast, Arbitrum, Ethereum, and Optimism carry a higher fee of 0.50% (50 basis points) due to greater operational complexity and legacy infrastructure costs.

This tiered structure reflects BlackRock’s effort to balance scalability with sustainability across different technological environments.

The Rising Demand for Tokenized Real-World Assets

BlackRock’s multichain strategy underscores a broader trend: increasing institutional appetite for tokenized RWAs. These digital representations of physical or financial assets—such as bonds, real estate, or commodities—offer numerous advantages:

Currently, the total value of tokenized U.S. Treasury securities stands at approximately **$2.4 billion**, a fraction of the $35 trillion U.S. public debt market. This gap represents a massive untapped opportunity—one that BlackRock aims to lead.

As Colin Butler, Global Head of Institutional Capital at Polygon, noted:

“RWA tokens—from T-Bills to artworks—represent a $30 trillion market opportunity globally.”

From government bonds to private credit and even intellectual property rights, the scope of tokenizable assets is vast and largely unexplored.

Frequently Asked Questions (FAQ)

Q: What is BUIDL by BlackRock?
A: BUIDL is a tokenized institutional liquidity fund that provides exposure to short-term U.S. Treasury bills and low-risk securities. It operates on multiple blockchains and maintains a stable $1.00 NAV per share.

Q: Which blockchains support BUIDL?
A: BUIDL is available on Ethereum, Aptos, Arbitrum, Avalanche, Optimism (OP Mainnet), and Polygon.

Q: How does BUIDL generate returns?
A: The fund earns yield from U.S. Treasury bills and money market instruments. Investors receive regular distributions with an average annual return of 4.5%.

Q: Is BUIDL regulated?
A: Yes. The fund is issued through Securitize Markets, LLC, under U.S. securities regulations, with BNY Mellon serving as custodian.

Q: Are there differences in fees across chains?
A: Yes. Fees range from 0.20% on Aptos, Polygon, and Avalanche to 0.50% on Arbitrum, Ethereum, and Optimism.

Q: Can retail investors access BUIDL?
A: Currently, BUIDL is primarily targeted at institutional and accredited investors due to regulatory requirements.

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Final Thoughts

BlackRock’s decision to make BUIDL multichain is more than a technical upgrade—it’s a strategic declaration of intent. By embracing interoperability and decentralization at scale, the firm is accelerating the convergence of traditional finance and Web3.

As demand for transparent, efficient, and accessible investment vehicles grows, tokenized RWAs like BUIDL will play an increasingly central role in global capital markets. With over half a billion dollars already deployed and expansion plans ongoing, BlackRock has positioned itself at the forefront of this transformation.

The future of finance isn’t just digital—it’s multichain.

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