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Statement of Additional Information Supplement dated March 28, 2017

The purpose of this supplement is to provide you with changes to the current Statements of Additional Information for Class A, A2, AX, B, BX, C, CX, P, R, RX, R5, R6, S, Y, Invesco Cash Reserve, Investor Class, Cash Management, Corporate, Institutional, Personal Investment, Private Investment, Reserve and Resource Class shares of the Funds, as applicable, listed below:

Effective as of March 9, 2017, shareholders of the Funds listed above elected Cynthia Hostetler, Teresa M. Ressel, Ann Barnett Stern and Christopher L. Wilson as trustees of each Fund. The following information is added under “Management of the Trust – Board of Trustees – Independent Trustees” in the Statement of Additional Information for each Fund.

Independent Trustees

Cynthia Hostetler, Trustee

Cynthia Hostetler is currently a member of the board of directors/trustees of the Vulcan Materials Company, a public company engaged in the production and distribution of construction materials, Trilinc Global Impact Fund LLC, a publicly registered non-traded limited liability company that invests in a diversified portfolio of private debt instruments, and the Aberdeen Investment Funds, a mutual fund complex. Previously, Ms. Hostetler served as a member of the board of directors of Edgen

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Group Inc., a public company that provides products and services to energy and construction companies, from 2012 to 2013, prior to its sale to Sumitomo.

From 2001 to 2009 Ms. Hostetler served as Head of Investment Funds and Private Equity at Overseas Private Investment Corporation (“OPIC”), a government agency that supports US investment in the emerging markets. Ms. Hostetler oversaw a. multi-billion dollar investment portfolio in private equity funds. Prior to joining OPIC, Ms. Hostetler served as President and member of the board of directors of First Manhattan Bancorporation, a bank holding company, and its largest subsidiary, First Savings Bank, from 1991 to 2001.

The Board believes that Ms. Hostetler’s knowledge of financial services and investment management, her experience as a director of other companies, including a mutual fund complex, her legal background, and other professional experience gained through her prior employment benefit the Funds.

Teresa M. Ressel, Trustee

Teresa M. Ressel has previously served across both the private sector and the U.S. government. Formerly, Ms. Ressel served from 2004 to 2012 in various capacities at UBS AG, including most recently as Chief Executive Officer of UBS Securities LLC, a broker-dealer division of UBS Investment Bank, and Group Chief Operating Officer of the Americas group at UBS AG. In these roles, Ms. Ressel managed a broad array of operational risk controls, supervisory control, regulatory, compliance, and logistics functions covering the United States and Canada, as well as banking activities covering the Americas.

Between 2001 and 2004, Ms. Ressel served at the U.S. Treasury first as Deputy Assistant Secretary for Management and Budget and then as Assistant Secretary for Management and Chief Financial Officer. Ms. Ressel was confirmed by the U.S. Senate and handles a broad array of management duties including finance & accounting, operational risk, audit and performance measurement along with information technology and infrastructure security.

Ms. Ressel currently serves as a member of the board of directors and as a member of the audit committee of ON Semiconductor Corporation, a publicly traded technology company. Ms. Ressel currently chairs their Corporate Governance and Nominating Committee. ON Semiconductor is a leading supplier of semiconductor-based solutions, many of which reduce global energy use. She has served on the ON Semiconductor board since 2012.

Ms. Ressel also currently serves as a member of the board of directors at Atlantic Power, a publicly traded company which owns and operates a diverse fleet of power generation across the United States and Canada. She serves on the audit committee and compensation committee and has been on the Atlantic Power board since 2014.

The Board believes that Ms. Ressel’s risk management and financial experience in both the private and public sectors benefits the Funds.

Ann Barnett Stern, Trustee

Ann Barnett Stern is currently the President and Chief Executive Officer of Houston Endowment Inc., a private philanthropic institution. She has served in this capacity since 2012. Formerly, Ms. Stern served in various capacities at Texas Children’s Hospital from 2003 to 2012, including General Counsel and Executive Vice President.

Ms. Stern is also currently a member of the Dallas Board of the Federal Reserve Bank of Dallas, a role she has held since 2013.

The Board believes that Ms. Stern’s knowledge of financial services and investment management and her experience as a director, and other professional experience gained through her prior employment benefit the Funds.

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Christopher L. Wilson, Trustee

Christopher L. Wilson started a career in the investment management business in 1980. From 2004 to 2009, Mr. Wilson served as President and Chief Executive Officer of Columbia Funds, a mutual fund complex with over $350 billion in assets. Mr. Wilson is currently a Managing Partner of CT2, LLC, an early stage investing and consulting firm for start-up companies. He has served in this capacity since 2009.

From 2014 to 2016, Mr. Wilson served as a member of the Board of Directors of the mutual fund company managed by TDAM USA Inc., an affiliate of TD Bank, N.A.

Mr. Wilson also currently serves as a member of the Board of Directors of ISO New England, Inc., the company that establishes the wholesale electricity market and manages the electrical power grid in New England. Mr. Wilson is currently the chair of the Audit and Finance Committee, which also oversees cybersecurity, and a member of the systems planning committee of ISO-NE, Inc. He previously served as chair of the Human Resources and Compensation Committee and was a member of the Markets Committee. He has served on the ISO New England, Inc. board since 2011.

The Board believes that Mr. Wilson’s knowledge of financial services and investment management, his experience as a director and audit committee member of other companies, including a mutual fund company, and other professional experience gained through his prior employment benefit the Funds.

The following information is added to the table under “Appendix C – Trustees and Officers” in the Statement of Additional Information for each Fund.

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