AllianzIM U.S. Large Cap 6 Month Buffer10 Apr/Oct ETF (SIXO) Exchange: NYSE ARCA

As described in the Fund’s prospectus, the Fund is subjectto an upside return cap (the ”Cap”) that represents the absolute maximum percentage return an investor can achievefrom an investment in the Fund held for the Outcome Period. The Fund’s initial Outcome Period will begin on October 1, 2021, andwill end on March 31, 2022. The Fund’s Cap will not be determined until after the end of the last market day prior to the initialOutcome Period, or September 30, 2021. As of the date of this Supplement, the Cap for the Fund for the initial Outcome Period is expectedto be within the range shown in the table below, before and after taking into account the Fund’s annualized unitary management feeof 0.74% of the Fund’s average daily net assets:  Fund Name Ticker Estimated Cap Range AllianzIM U.S. Large Cap 6 Month Buffer10 Apr/Oct ETF SIXO 3.35% – 6.35% (before management fee) 2.98% – 5.98% (after management fee)  The Fund’s return will be further reduced by brokerage commissions,trading fees, taxes and non-routine or extraordinary expenses not included in the Fund’s unitary management fee, as described inthe prospectus. The expected Cap ranges provided here are based upon market conditions as of the date of this Supplement. The final Capcould fall outside of this range if there is a material change in market conditions between the date of this Supplement and the date onwhich the final Cap is established.