Strategy. The Fund invests, under normal circumstances, at least 80% of its net assets (plus any borrowings for investment purposes) in securities of U.S. issuers, and in derivatives and other instruments that have economic characteristics similar to such securities. The Fund deems an issuer to be a U.S. issuer if (i) its principal securities trading market (i.e., a U.S. stock exchange, NASDAQ or over-the-counter markets) is in the U.S.; (ii) it (alone or through its consolidated subsidiaries) derives 50% or more of its annual revenue from goods produced, sales made, or services performed in the U.S.; (iii) it is organized under the laws of, or has a principal office in, the U.S or (iv) its country of risk is the U.S. … Show more… The Fund invests, under normal circumstances, at least 80% of its net assets (plus any borrowings for investment purposes) in securities of U.S. issuers, and in derivatives and other instruments that have economic characteristics similar to such securities. The Fund deems an issuer to be a U.S. issuer if (i) its principal securities trading market (i.e., a U.S. stock exchange, NASDAQ or over-the-counter markets) is in the U.S.; (ii) it (alone or through its consolidated subsidiaries) derives 50% or more of its annual revenue from goods produced, sales made, or services performed in the U.S.; (iii) it is organized under the laws of, or has a principal office in, the U.S or (iv) its country of risk is the U.S. as determined by a third party service provider such as Bloomberg. The Fund invests primarily in equity securities of U.S. large capitalization (large cap) companies. The principal type of equity security in which the Fund invests is common stock. The Fund will also invest in derivatives that Invesco Advisers, Inc. (Invesco or the Adviser) believes will decrease the volatility level of the Funds annual returns. Although the Fund is actively managed, the Funds equity exposure may include investments in U.S. large cap securities that comprise the Invesco U.S. Large Cap Index. When utilizing an indexing approach, the Fund will generally invest in all of the securities in the Invesco U.S. Large Cap Index in their approximate weightings. Where it may not be possible or practicable to purchase all of those securities in those same weightings, however, the Fund may utilize a sampling methodology to seek to track the performance of the Invesco U.S. Large Cap Index. The Invesco U.S. Large Cap Index is a broad-based benchmark of U.S. large cap equities measuring the aggregate performance of the largest companies in the U.S. where each stock is weighted proportionally to its market capitalization. The Invesco U.S. Large Cap Index is sponsored by Invesco Indexing LLC, which is affiliated with the Adviser. Currently, the Invesco U.S. Large Cap Index includes 408 separate stocks as of October 31, 2021; however, this number is subject to change. The Invesco U.S. Large Cap Index is reconstituted annually with maintenance rebalances quarterly. Buy and sell decisions for the Funds U.S. large cap equity investments are generally a function of changes in the Invesco U.S. Large Cap Index, rather than independent decisions made by the investment team. The Adviser also employs a volatility management strategy that is intended to manage the volatility level of the Funds annual returns. The volatility management strategy seeks to stabilize the volatility of the Fund and to reduce the downside risk of the Fund during periods of significant and sustained market declines. To implement this strategy, the Adviser will sell short exchange-traded futures contracts in periods of high market volatility when the forecasted annualized volatility level of the Funds returns is expected to exceed a target volatility level (the threshold volatility level). The Adviser may sell short futures contracts as often as daily to lower the Funds expected volatility level but does not expect to sell short futures contracts when the Funds volatility level is below the threshold volatility level. In addition, the Adviser may seek to reduce exposure to certain downside risk by buying and selling exchange-traded equity index options in an effort to mitigate the Funds exposure to volatility that could adversely impact the Funds returns. Due to market conditions or other factors, the actual or realized volatility of the Fund for any particular period of time may be materially higher than the threshold volatility level. The Funds threshold volatility level is not a total return performance target. It is possible for the Fund to maintain its volatility at or under its threshold volatility level while having negative performance returns. The Fund may hold significant levels of cash and cash equivalent instruments, including affiliated money market funds, as margin or collateral for the Funds exposure to derivative instruments such as futures and options contracts. Show less