VOO

ETFsLive

Tokenized Vanguard S&P 500

Tokenized Vanguard S&P 500, lowest-cost large-cap exposure.

See VOO on /markets →Underlying ticker: VOO

Key facts

On-chain symbol
VOO
Underlying
VOO
Asset class
ETFs
ISIN
US9229083632
Custody
Held at Flo Finance
Chains
Base, Arbitrum, Ethereum
Distribution treatment
Total return, accrued to NAV
Attestation cadence
Daily
Issuer
Flo Finance
Backing
1:1 backed by the real underlying

How VOO resolves to VOO

Each VOO on-chain represents a 1:1 claim on the underlying Vanguard S&P 500 held at an institutional custodian. The issuer and backing model are the same for every Flo token; only the underlying differs.

  1. 01

    Issuance

    Flo Finance issues VOO as a tokenized Vanguard S&P 500, 1:1 backed by the real underlying.

  2. 02

    Custody

    The underlying Vanguard S&P 500 is held at Flo Finance, an institutional custodian.

  3. 03

    Settlement

    VOO settles on-chain on Base, Arbitrum, Ethereum. Cross-chain transfers route through Chainlink CCIP.

  4. 04

    Attestation

    Reserves are attested daily by an independent auditor and published on the Flo transparency surface.

Mint VOO with one SDK call

Every Flo-issued token shares the same six SDK methods. Mint, redeem, supply, withdraw, borrow, repay.

POST /v1/mint

{
  "asset": "VOO",
  "notional_usdc": "1000.00",
  "slippage_bps": 50,
  "settlement": {
    "currency": "USDC",
    "chain": "base"
  }
}

Where VOO lives today

Flo distributes through partners. The same VOO on-chain is the asset every partner integrates against; partner UIs may relabel it for their own brand.

Partner integrations in build

No live partner is distributing VOO yet. Twelve integrations are in build across exchanges, wallets, fintechs, neobanks, and asset managers. Partners are listed here only after they ship.

Audits

Four independent firms, $250K bug bounty

Sherlock, Halborn, Cantina, and Cyfrin have audited the smart contracts that issue and settle VOO. The same contracts power every Flo-issued token; one audit covers the catalogue.

Read the audit reports →

Backing

1:1 backed by the real underlying

VOO is issued by Flo Finance and 1:1 backed by real Vanguard S&P 500 held at institutional custodians. Reserves are attested daily and published on the Flo transparency surface.

Open the transparency page →

Risks

VOO carries the market risk of the underlying Vanguard S&P 500, plus the structural risks common to every tokenized asset: custody concentration, smart-contract risk, and oracle dependency. Read the full risk disclosures on the Flo transparency surface before integrating or holding.