> For the complete documentation index, see [llms.txt](https://docs.superstate.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.superstate.com/investors/tokenized-funds/available-funds/invesco-ustb.md).

# Invesco USTB

> New to Superstate? Start with [Getting started](/investors/getting-started.md) and the [Investor Portal](/investors/investor-portal.md).

The Invesco Short Duration US Government Securities Fund (USTB) invests in short-duration U.S. Treasury Bills. Shares of the Fund are issued as USTB tokens on Ethereum, Solana, and Plume, or held in book‑entry by Superstate. USTB is freely transferable between wallet addresses on the Allowlist. Purchases and redemptions are facilitated through USD or USDC, with liquidity each market day.

### Fund information

USTB invests in short-duration U.S. Treasury Bills. Return accrues as interest income, reflected in a continuously increasing NAV per share rather than distributions. Its NAV/S started at $10.000000 and updates continuously. 

To learn more please refer to [Invesco's fund overview](https://www.invesco.com/us/en/institutional/strategies/money-market-and-liquidity/ustb.html), the [USTB fund page](https://superstate.com/assets/ustb) and [How NAV, income & yield work](/investors/tokenized-funds/nav-income-and-yield.md) for shared fund income mechanics.

### Subscribing

Investors can view subscription instructions in the Superstate portal. Subscriptions can be sent with a USD wire or USDC (on Ethereum, Solana, or Plume). USTB is continuously priced, so a purchase is priced at the NAV/S when funds are received: shares are delivered immediately for orders paid in USDC (including non-business days), or same-day for USD wires received before 5pm ET. Shares are delivered as tokens to an allowlisted address or as book-entry. The minimum initial investment is $100,000 unless waived by Superstate.

See [Subscription](/investors/tokenized-funds/subscribe.md) for the step-by-step.

### Redeeming

Investors can view redemption instructions in the Superstate portal. Proceeds are paid as U.S. Dollars to a bank account, or USDC to an Ethereum, Solana, or Plume address. Proceeds are delivered immediately (including non-business days, subject to available liquidity) for payout requests in USDC, or same-day for USD if received before 1pm ET.

See [Redemption](/investors/tokenized-funds/redeem.md) for the step-by-step.

### Tokenizing book-entry shares

Investors can convert book-entry USTB shares into tokens on Ethereum, Solana, or Plume. Tokenization works the same across all Superstate funds; only the supported networks differ. 

See [Tokenizing book-entry shares](/investors/investor-portal.md#tokenizing-book-entry-shares) for the step-by-step.

### Market days & holidays

On U.S. market holidays, USDC purchases and redemptions may still be made, but no Treasury Bills are bought or sold. See the [holiday calendar](/investors/tokenized-funds.md#market-days-and-holidays).

### Addresses

Token contracts and oracles by chain: see [Smart contracts.](/investors/smart-contracts.md)

### Documents

Fund documents and statements are available in the [Investor Portal](https://superstate.com/assets/ustb).

### More info

* [Historical NAV/S, AUM, and Yield](https://superstate.com/assets/ustb)
* [Current holdings, supported networks, DeFi integrations, and service providers](https://superstate.com/assets/ustb).

For **Disclosures and Risk Factors** related to the Invesco Short Duration US Government Securities Fund visit [superstate.com/assets/ustb#disclaimers](https://superstate.com/assets/ustb#disclaimers)