The story
The fund was launched on March 10, 1999.
The fund's ticker was changed to "QQQQ" in 2004, then reverted to "QQQ" in March 2011.
In December 2025, the fund changed its structure from a unit investment trust (UIT) to a more flexible open-ended ETF structure under the Investment Company Act of 1940. This allows the fund to reinvest income, participate in securities lending, and utilize custom redemption baskets. The governance of the fund was changed to a board of trustees from a third-party bank trustee. The change also allows Invesco to collect management fees directly; in conjunction with the change, the expense ratio of the fund was reduced from 0.20% to 0.18%.
From Wikipedia’s article on Invesco QQQ, shared under CC BY-SA 4.0.3