Securitize and Ethena Launch $100M Round-the-Clock Liquidity Facility for BUIDL

Securitize and Ethena Labs have launched a $100 million liquidity facility that lets eligible holders of BlackRock's BUIDL tokenized fund swap shares for stablecoins, including USDC, 24 hours a day. The facility addresses a structural gap for institutional investors: until now, BUIDL's blockchain-native shares could move at any hour, but converting them into liquid stablecoins outside traditional market hours had no defined channel.

How does the facility work?

BUIDL, formally the BlackRock USD Institutional Digital Liquidity Fund, issues each share as an on-chain token. The new facility lets eligible investors exchange those shares for supported stablecoins whenever they choose, including weekends and overnight sessions.

The pool opens with $50 million in initial liquidity, split evenly between BUIDL and USDC so it can handle flows in both directions. A second $50 million tranche sits in reserve and becomes available within an hour as the first batch is drawn down, bringing total capacity to $100 million. Securitize acts as the regulated transfer agent handling operations.

What prior deals connect the parties?

The facility builds on existing infrastructure between the two firms. In 2025, Securitize and Ethena set up atomic swaps between BUIDL and USDtb, Ethena's stablecoin. That link runs deeper than a trading pair: USDtb is primarily backed by BUIDL shares, giving Ethena a direct stake in how easily BUIDL trades.

The research behind the launch also cites a broader strategic partnership formed in June 2026, which integrated Ethena's digital products into Aladdin, BlackRock's institutional risk-management platform.

BlackRock launched BUIDL in March 2024 with a $1.00 net asset value per share. The fund has since become one of the most visible examples of a traditional asset manager issuing a product directly on public blockchain rails. Securitize serves as BUIDL's tokenization platform and transfer agent, trades on the NYSE under ticker SECZ, and manages over $4 billion in tokenized assets.

Why does overnight liquidity matter?

The constraint carries real operational risk for treasury desks. Crypto markets can move sharply on a Saturday night, and a desk holding BUIDL as collateral or for cash management may need stablecoins before Monday morning. The facility gives those holders a defined exit and entry point at any hour, with a known size: $50 million on hand at launch and another $50 million available within the hour.

For Ethena, the logic is tighter still. Because USDtb is primarily backed by BUIDL, smoother BUIDL liquidity supports the usability of the stablecoin built on top of it.

What are the limits?

The facility's capacity is defined, not unlimited. A $100 million pool can absorb routine flows, but very large redemptions would still rely on the fund's standard processes. Eligibility is restricted to qualifying investors rather than the general public, consistent with BUIDL's institutional focus.

The arrangement also deepens concentration. BlackRock's fund, Securitize's transfer-agent role and Ethena's stablecoin are now more tightly linked than before — integration that enables the swaps but means stress in one part of the chain would likely transmit to the others. How the facility behaves during its first sustained period of heavy overnight demand will test whether $100 million in committed capacity is sufficient for BUIDL's institutional holder base.

By Tom Whitfield