On July 7, 2023, the Nasdaq announced it would implement a special rebalancing for the Nasdaq 100 index, tracked by the Invesco QQQ ETF NASDAQ: QQQ effective after hours on July 21, 2023, and pre-market on July 24, 2023. It will be based on the index securities closing prices and outstanding shares as of July 3, 2023.
How the NASDAQ 100 Special Rebalancing Will Hurt Performance