The performance data quoted represents past performance. Past performance does not guarantee future results and current performance may be lower or higher than the performance data quoted. The investment return and principal value of your investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. The 365-yield represents standard one-day yield for the funds. The 30-day simple yield represents annualized results for the period, net of fees and expenses and exclude any realized capital gains or losses.

Performance figures reflect reinvested distributions and changes in net asset value (NAV) and the effect of the maximum sales charge unless otherwise stated.

Class R6 shares have no sales charge; therefore, performance is at NAV. Class R6 shares are closed to most investors. Please see the prospectus for more details.

³ You could lose money by investing in the Fund. Although the Fund seeks to preserve your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund’s sponsor is not required to reimburse the Fund for losses, and you should not expect that the sponsor will provide financial support to the Fund at any time, including during periods of market stress.

⁴ Class Y and Investor shares classes have no sales charge; therefore, performance is at NAV. Class Y and Investor shares classes are closed to most investors. Please see the prospectus for more details.

⁵ Class R6 shares incepted on April 4, 2017. Performance shown prior to that date is that of Class Cash Reserve shares and includes the 12b-1 fees applicable to Class Cash Reserve shares. Class Cash Reserve shares performance reflects any applicable fee waivers or expense reimbursements. Class Cash Reserve shares inception date is Oct. 16, 1993.

⁶ No contingent deferred sales charge (CDSC) will be imposed on redemptions of Class C or CX shares following one year from the date shares were purchased. Performance shown at NAV does not include sales charges, which would have reduced the performance.

⁷ Class R share returns do not include a 0.75% CDSC that may be imposed on a total redemption of retirement plan assets within the first year. The Class R shares have no sales charge; therefore, performance is at NAV. Class R shares are available only to certain retirement plans and IRAs. Please see the prospectus for more information.

⁸ Cash Reserve Class shares are sold without an initial sales charge and are not subject to a contingent deferred sales charge; however, they are subject to other fees and expenses described in the prospectus.

⁹ The 7-day SEC yield reflects fee waivers and/or expense reimbursements in effect for the period. Had the Adviser not waived fees and/or reimbursed expenses, the 7-day SEC yield would have been lower.

¹⁰ You could lose money by investing in the Fund. Although the Fund seeks to preserve your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may impose a fee upon the sale of your shares. The Fund's sponsor is not required to reimburse the Fund for losses, and you should not expect that the sponsor will provide financial support to the Fund at any time, including during periods of market stress.

¹¹

You could lose money by investing in the Fund. Because the share price of the Fund will fluctuate; when you sell your shares they may be worth more or less than what you originally paid for them. An investment in the Fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund may impose a fee upon the sale of your shares. The Fund's sponsor is not required to reimburse the Fund for losses, and you should not expect that the sponsor will provide financial support to the Fund at any time, including during periods of market stress.
 

¹² As the result of a reorganization on May 24, 2019, the returns of the fund for periods on or prior to May 24, 2019 reflect performance of the Oppenheimer predecessor fund. Share class returns will differ from the predecessor fund due to a change in expenses and sales charges.

¹³ Class R6 shares incepted on May 24, 2019. Performance shown prior to that date is that of Class A shares and includes the 12b-1 fees applicable to Class A shares. Class A shares performance reflects any applicable fee waivers or expense reimbursements. Class A shares inception date is Jan. 3, 1989.

¹⁴ Invesco Cash Reserve and Class R shares’ performance shown prior to the inception date is that of the predecessor fund’s Class A shares, restated to reflect the higher 12b-1 fees applicable to Invesco Cash Reserve and Class R shares. The predecessor fund’s Class A shares’ performance reflects any applicable fee waivers and/or expense reimbursements. The inception date of the predecessor fund’s Class A shares is January 2, 1987.

¹⁵ Class C shares’ performance shown prior to the inception date is that of the predecessor fund’s Class A shares at net asset value (NAV). The predecessor fund’s Class A shares’ performance reflects any applicable fee waivers and/or expense reimbursements. The inception date of the predecessor fund’s Class A shares is January 2, 1987.