Summary Prospectus Supplement dated November 10, 2010

The purpose of this mailing is to provide you with changes to the current Summary Prospectuses for Class A, B, C, R, Y, Investor Class Shares and Institutional Class Shares of the Fund listed below:

Invesco Basic Balanced Fund

Following a number of meetings in September and October 2010, the Board of Trustees of Invesco Basic Balanced Fund (the “Target Fund”), a series portfolio of AIM Funds Group (Invesco Funds Group), has unanimously approved an Agreement and Plan of Reorganization (the “Agreement”) pursuant to which the Target Fund would transfer all of its assets and liabilities to Invesco Van Kampen Equity and Income Fund (the “Acquiring Fund”), a series portfolio of AIM Counselor Series Trust (Invesco Counselor Series Trust), in exchange for shares of the Acquiring Fund that would be distributed to Target Fund shareholders.

The Agreement requires approval by the Target Fund shareholders and will be submitted to the shareholders for their consideration at a meeting to be held in or around April 2011. If the Agreement is approved by shareholders of the Target Fund and certain conditions required by the Agreement are satisfied, the reorganization is expected to be consummated shortly thereafter. Upon closing of the reorganization, shareholders of the Target Fund will receive a corresponding class of shares of the Acquiring Fund in exchange for their shares of the Target Fund and the Target Fund will liquidate and cease operations.

A combined Proxy Statement/Prospectus will be sent to shareholders of the Target Fund to seek their approval of the Agreement, which will include a full discussion of the reorganization and the factors the Board of Trustees considered in approving the Agreement.

If shareholders approve the reorganization, it is anticipated that the Target Fund will close to new investors as soon as practicable following shareholder approval through the consummation of the reorganization to facilitate a smooth transition of the Target Fund shareholders to the Acquiring Fund. The Acquiring Fund will remain open for purchase during this period.

All investors who are invested in the Target Fund as of the date on which the Target Fund closed to new investors and remain invested in the Target Fund may continue to make additional investments in their existing accounts and may open new accounts in their name.

BBA-SUM SUP-1 111010