Which chain has the most BUIDL?

The live supply-by-chain figures on this page rank the chains by how much BUIDL sits on each. The split shifts as allocators mint, redeem, and bridge, so the current measured figures — not a fixed number — are the accurate answer, and they're read live from onchain data.

How is BUIDL's supply measured across chains?

As decimals-normalized USD supply per chain, taken from the same authoritative by-chain rollup the fund's instrument page uses. Multiple deployments on one chain are summed into that chain's total, and chains with no measured supply are shown as not measured rather than as zero, so the split reflects real measured supply.

Why does it matter which chains a tokenized fund is on?

Where a fund's supply sits shapes where its redemption, collateral, and liquidity activity concentrate, and how much bridging exposure it carries. A fund spread across many chains touches more venues than one on a single chain. It's a structural property of the token that a single-chain explorer can't reveal.

Is BUIDL the same fund on every chain?

Yes — it's issued as the same fund across its chains, and OnChain Benchmark aggregates supply and holder concentration across all of them for a single view. The per-chain split shows how that one fund's supply is distributed, while its rating and concentration are measured across all chains together.

OCB Reference/Market

What chains is BUIDL on, and how much sits on each?

BlackRock's tokenized Treasury fund is issued on several blockchains, and the split isn't even. Here is BUIDL's supply by chain, measured live — and why where the supply lives is worth knowing.

OnChain Benchmark · Reference · figures update live

The short answer

BUIDL — BlackRock's tokenized US Treasury fund, run with Securitize — is issued on several blockchains, not one, and its supply is spread unevenly across them. The live breakdown below shows how much of BUIDL's measured supply sits on each chain, read from current onchain data and aggregated across every deployment. Where the supply lives matters for a holder: it shapes which chains carry redemption and collateral activity, and it's a signal of where the fund's onchain use is actually concentrated — the kind of cross-chain view that a single-chain explorer can't give you.

A tokenized fund isn't pinned to one chain the way a traditional fund is pinned to one registrar. BUIDL is issued as the same fund across multiple blockchains, and the amount on each moves as allocators mint, redeem, and bridge. So "what chains is BUIDL on" is really two questions: which chains, and — the more useful one — how much on each.

How is BUIDL's supply split across chains?

Here is BUIDL's measured supply by chain, read live. Each figure is decimals-normalized USD supply from the same onchain measurement the fund's instrument page uses — so this split reconciles with the published fund figures rather than a separate estimate:

BUIDL supply by chainLive

Solana$977.90M34.7%

Ethereum$935.63M33.2%

Avalanche$564.23M20.0%

Aptos$161.34M5.7%

BNB Chain$136.26M4.8%

Optimism$26.41M0.9%

Arbitrum$8.56M0.3%

Polygon$4.89M0.2%

Measured supply by chain · read live

Why does the cross-chain split matter?

Two funds of the same size can behave very differently depending on where their supply sits. The chains carrying the most BUIDL are where its redemption and collateral activity concentrate, and where onchain liquidity for it is deepest. A fund whose supply is spread across many chains is exposed to more bridging and more venues than one concentrated on a single chain — a structural fact about the token that a per-chain explorer, looking at one deployment, will never show you.

How does this relate to BUIDL's rating?

The cross-chain distribution feeds the holder-concentration and supply picture that goes into BUIDL's quality rating. Concentration is measured across all chains together, against free float — see who holds BUIDL for how tightly it's held. The per-chain split here is the "where" that sits underneath those aggregate numbers.

Questions & answers

What chains is BUIDL on?: BUIDL — BlackRock's tokenized US Treasury fund, run with Securitize — is issued on several blockchains as the same fund, with its supply spread unevenly across them. The live per-chain breakdown on this page shows how much of BUIDL's measured supply sits on each chain, aggregated across every deployment and read from current onchain data.
Which chain has the most BUIDL?: The live supply-by-chain figures on this page rank the chains by how much BUIDL sits on each. The split shifts as allocators mint, redeem, and bridge, so the current measured figures — not a fixed number — are the accurate answer, and they're read live from onchain data.
How is BUIDL's supply measured across chains?: As decimals-normalized USD supply per chain, taken from the same authoritative by-chain rollup the fund's instrument page uses. Multiple deployments on one chain are summed into that chain's total, and chains with no measured supply are shown as not measured rather than as zero, so the split reflects real measured supply.
Why does it matter which chains a tokenized fund is on?: Where a fund's supply sits shapes where its redemption, collateral, and liquidity activity concentrate, and how much bridging exposure it carries. A fund spread across many chains touches more venues than one on a single chain. It's a structural property of the token that a single-chain explorer can't reveal.
Is BUIDL the same fund on every chain?: Yes — it's issued as the same fund across its chains, and OnChain Benchmark aggregates supply and holder concentration across all of them for a single view. The per-chain split shows how that one fund's supply is distributed, while its rating and concentration are measured across all chains together.

Last reviewed Sep 5, 2026 · figures read live