BlackRock BUIDL · Tokenized MMF Benchmark · "Stablecoin Yield Infrastructure"
ConfidenceCertainUpdated2026-05-26Review by2026-09-21Sources4Machine-translatedOriginal (JA)
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This entry sits under fintech index. Read it with Japan financial regulation for tokens, crypto-assets, and payments for adjacent context and Japan stablecoin regulatory landscape for the broader system boundary.
[!info] TL;DR BlackRock USD Institutional Digital Liquidity Fund (BUIDL), issued by Securitize, launched on Ethereum in 2024-03 and as of 2026-05 spans 8 chains with AUM of $2.58B and a Moody’s Aaa-mf top rating. BUIDL is not merely an “on-chain money market product” — it has been upgraded to become yield infrastructure for stablecoin reserves, sold to almost all major stablecoin / DeFi protocols including USDB / Frax / Ondo OUSG / Ethena USDtb / Spark sUSDS, and forms one half of the dual core of tokenized MMFs alongside JPMorgan Kinexys MONY/JLTXX.
Key facts
- AUM $2.58B (2026-05) · spans 8 chains (Ethereum, Solana, BNB, Avalanche, Aptos, Arbitrum, Optimism, Polygon) •
- Rating Moody’s Aaa-mf (granted 2026-05-13 same day as Fidelity FYHXX) •
- Regulatory route: Reg D 506(c) private placement / BVI · minimum investment $5M · management fee ~20 bps •
- Portfolio: 75% US Treasuries (1-3M) + 15% overnight repo + 10% cash · WAM <60 days · 2a-7 standard •
- Transfer agent: Securitize (BlackRock invested $100M + board seat) •
- 2026-05-08: SEC filing for BSTBL + BRSRV (2a-7 registered public fund designed specifically for stablecoin reserves) •
- 2026-05-14: Jointly constructed $1B instant redemption facility with Goldman/DTCC/Janus (breaks T+0 bottleneck) •
Mechanism / How it works
BUIDL’s “yield infrastructure” model: stablecoin issuer holds BUIDL as reserve → BUIDL’s 4.3% APY flows into issuer’s net interest income → issuer uses this to expand stablecoin circulation → expanded circulation drives further BUIDL purchases. Key innovation: BUIDL is simultaneously accepted as initial margin collateral for derivatives by CME / Binance / Deribit / Crypto.com, and Apollo ACRED uses BUIDL as redemption liquidity. BUIDL’s effective economic scale is therefore not just AUM; it is being repeatedly leveraged. This directly couples with the reserve-asset interlock flywheel.
Origin & evolution
2024-03: BUIDL launches on Ethereum only. 2024-2025: expands to eight chains and AUM grows 4-5x. 2025-04: Circle publicly acknowledges being one of BUIDL’s earliest large institutional LPs. 2025-12: cumulative distributions exceed $100M. 2026-05-13: Moody’s assigns Aaa-mf. 2026-05-14: $1B instant redemption facility announced. 2026-05-08: new BSTBL / BRSRV filings commercialize the “stablecoin reserve” category following GENIUS §501. BlackRock digital asset AUM reaches $60.67B as of 2026 Q1, with BUIDL as the most highly leveraged central node in this portfolio and serving the same category of institutional clients as CEX RWA integration.
Related
- Wiki Index
- Reserve-asset interlock flywheel · BUIDL to USDC
- JPMorgan JPMD · tokenized deposits
- Apollo ACRED · private-credit tokenization
- stablecoin interest-split economics
- portfolio-winner structure
- tokenized MMF matrix · WisdomTree / Hashnote
- Circle USDC · one of BUIDL’s earliest large institutional LPs
Sources
Last refresh (2026-05-26): Japanified, dates updated. Added tokenized MMF matrix wikilinks (WisdomTree/Hashnote) and Circle USDC reserve LP wikilink.
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