Treasury & money marketActive

Invesco Short Duration US Government Securities Fund (formerly Superstate Short Duration US Government Securities Fund)

Value (USD)$590.5M2026-09-30

Wallet holders1032026-09-30

Minimum investmentUSD 100,000 unless waived by Superstate

Yield—Unverified

Overview

USTB is a private fund that invests in short-duration US Treasury bills, with shares issued as allowlisted tokens on Ethereum, Solana and Plume or held in book-entry form. Superstate launched it in February 2024; in 2026 Invesco took over as investment manager and the fund was renamed, keeping the USTB ticker and contracts. It is open to accredited investors who are also qualified purchasers.

Short-duration US Treasury bills (originally Treasury and agency securities)

Product structure

Lowest eligible investor type: US qualified purchasers

US persons: Accepts US persons

Investor eligibility: Accredited investors who are also qualified purchasers, onboarded to Superstate allowlist

Classification of public offering terms, not a determination of your eligibility. Check the offering documents.

Legal wrapper: Private fund; series of a Delaware statutory trust
Domicile: United States
Regulatory status: Not SEC-registered; offered under Rule 506(c) of Regulation D; placement agent Invesco Distributors, Inc.
Asset segregation: Unverified
Custodian: The Bank of New York Mellon
Fund administrator: NAV Fund Services (NAV calculation agent)
Auditor: PricewaterhouseCoopers LLP
Transfer agent: Superstate Services LLC (digital transfer agent; overlapping on-chain and off-chain ownership records)
Tokenization agent: Superstate (Superstate Services LLC)
Proof of reserve: Unverified

Redemption & liquidity

Redemption terms: Redemptions in USDC processed immediately including non-business days; USD redemptions same-day if received before 1pm ET
Secondary liquidity: Transfers only between allowlisted wallets; no exchange listing
Yield mechanism: NAV accrual (continuously updated NAV per share)

Fees

Management fee 0.15%, with rebates for holdings above USD 25 million; 0% subscription/redemption fees per rwa.xyz

On-chain information

EthereumSolanaPlume

Token standard: Upgradeable OpenZeppelin ERC-20 (EVM); SPL Token-2022 with extensions (Solana)
Transfer restrictions: Allowlist-gated; only Superstate admin address can change allowlist; admin can mint, offboard and force-burn tokens for legal compliance

Contract addresses: unverified

Notes & material events

Invesco partnership announced 24 Mar 2026 (transition expected Q2 2026); fund renamed Invesco Short Duration US Government Securities Fund, retaining USTB ticker and smart contracts. rwa.xyz still lists older service providers (UMB Bank custodian, Ernst & Young auditor); issuer page (fetched 2026-09-30) lists BNY Mellon and PwC, used here. Issuer page shows total AUM USD 752,695,578 including ~24% book-entry shares (undated, fetched 2026-09-30); aum_usd above is rwa.xyz on-chain figure. Smart contracts audited by ChainSecurity and 0xMacro. Custody of Treasury assets by BNY Mellon.

Revision history

No published revisions.

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