BSTBL
ProductsAnnounced· US

BSTBL

The TradFi half of BlackRock's parallel-rails play. Where BUIDL is BVI for DeFi composability and BRSRV is purpose-built for stablecoin reserves, BSTBL is for bank treasury desks: Rule 2a-7 government MMF, AAA-rated parent fund, BNY Mellon handles everything, fiat wire only. No crypto infrastructure required to subscribe.

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Brief

BlackRock's TradFi tokenized rail. OnChain share class of the existing $6.1B BlackRock Select Treasury Based Liquidity Fund (formerly Liquid Federal Trust, renamed Oct 2025; S&P 'AAAm' rated). SEC 485APOS filed May 8, 2026. BNY Mellon as transfer agent + custody + accounting. Ethereum only via ERC-20 with whitelisted wallets. Fiat wire subscriptions. Bank treasury desks the target buyer.

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Recent activity

Latest moves on the changelog feed.

  • May 8, 2026NEW

    BlackRock → SEC. Two new tokenized money market funds filed via 485APOS. BSTBL (OnChain share class of $6.1B Select Treasury fund; BNY Mellon TA; Ethereum only; fiat wire subscriptions) and BRSRV (purpose-built stablecoin reserve vehicle; Securitize TA; multi-chain; USDC subscription). Both intended as 'eligible reserve assets' for stablecoin issuers under the GENIUS Act. Parallel rails to BUIDL, not extensions of it.

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Snapshot

Key terms and identifiers.

Asset value
$0
Fee
Custodian
BNY Mellon (TA + custody + accounting)
Structure
OnChain share class of $6.1B Rule 2a-7 government MMF (AAA-rated, S&P)
Chains
Ethereum
Investor type
Bank treasury desks; institutional fiat-wire subscribers
As of
2026-05
Asset classes
Treasuries
Token standards
erc-20
Regulatory
sec-40-act, us-stablecoin-acts
Jurisdiction
US
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Milestones

How this player got here.

  1. May 2026485APOS filing adding OnChain Shares (CIK 0000097098)
  2. Oct 2025Parent fund renamed BlackRock Select Treasury Based Liquidity Fund (from Liquid Federal Trust)
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Connections

Who they build with, build on, integrate with.