> 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/invesco-ustb.md). # Invesco USTB The Invesco Short Duration US Government Securities Fund 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 form. USTB is freely transferable between wallet addresses on the Allowlist. Purchases and redemptions are facilitated through USD or USDC, with liquidity each market day. #### More info * [Income, Fees & Yield](/investors/tokenized-funds/invesco-ustb/income-fees-and-yield.md) * [Purchasing USTB](/investors/tokenized-funds/invesco-ustb/purchasing-ustb.md) * [Redeeming USTB](/investors/tokenized-funds/invesco-ustb/redeeming-ustb.md) * [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/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.