A Prospectus Supplement filing for the $335 million Invesco Tax-Free Cash Reserve Portfolio says, "On January 19, 2023, the Board of Trustees of Short-Term Investments Trust approved a Plan of Liquidation and Dissolution, which authorizes the termination, liquidation and dissolution of the Fund. In order to effect such liquidation, the Fund will close to investments by new accounts after the close of business on February 24, 2023. Existing shareholders will continue to be able to invest in the Fund until the close of business on or about April 10, 2023 when no further purchases or exchanges into the Fund will be accepted as the Fund prepares for liquidation on or about April 24, 2023 as described below. The liquidation may occur sooner if at any time before the Liquidation Date there are no shares outstanding in the Fund. The liquidation may also be delayed or occur sooner if unforeseen circumstances arise. Shareholders of the Fund may redeem their shares at any time prior to the Liquidation Date. The Fund reserves the right, in its discretion, to modify the extent to which sales of shares are limited prior to the Liquidation Date." It adds, "To prepare for the closing and liquidation of the Fund, the Fund's portfolio managers may increase the Fund's assets held in cash and similar instruments in order to pay for Fund expenses and meet redemption requests. As a result, the Fund may deviate from its stated investment strategies and policies and may no longer be managed to meet its investment objective.... At any time prior to the Liquidation Date, shareholders may redeem their shares of the Fund pursuant to the procedures set forth in the prospectus." For more on recent liquidations, see our Sept. 19, 2022 News, "SSGA to Liquidate State Street ESG Liquid Reserves," and our July 7, 2022 News, "DWS Liquidating Govt Cash Mgmt Fund."