> 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: USDC is delivered within minutes; a USD wire received before 1pm ET is processed same day, otherwise the next market day. The minimum initial investment is $100,000 unless waived by Superstate. Shares are delivered as tokens to an allowlisted address or as book-entry. 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. USDC payouts are processed as liquidity is available; USD payouts settle same day if requested before 1pm ET, otherwise T+1. 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) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.superstate.com/investors/tokenized-funds/available-funds/invesco-ustb.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.