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BlackRock expanded its BUIDL fund to include Aptos, Arbitrum, Avalanche, Optimism, and Polygon.
The BUIDL fund became the world’s largest tokenized fund by assets under management in under 40 days.

BlackRock announced the expansion of its BlackRock USD Institutional Digital Liquidity Fund (BUIDL) across five additional blockchain networks: Aptos, Arbitrum, Avalanche, Optimism’s OP Mainnet, and Polygon.

The fund, tokenized by Securitize and initially launched on Ethereum in March 2024, became the world’s largest tokenized fund by assets under management in under 40 days.

The expansion enables native interaction with BUIDL across multiple blockchain ecosystems, offering on-chain yield, flexible custody, near real-time peer-to-peer transfers, and on-chain dividend capabilities.

“We wanted to develop an ecosystem that was thoughtfully designed to be digital and take advantage of the advantages of tokenization,” said Carlos Domingo, Securitize CEO and co-founder.

According to Carlos Domingo, CEO of Securitize, the expansion exemplifies tokenization’s growth, as the added blockchain integrations open new pathways for real-world assets to scale and reach digital-native investors.

BNY Mellon, as fund administrator and custodian, supported BUIDL’s onboarding onto new blockchains, each offering unique features like Aptos’ Move language, Arbitrum’s low costs, and Polygon’s large user base to drive adoption.