Millennium Management's index trading teams, led by Glen Scheinberg in New York and Pratik Madhvani in Dubai, generated approximately $3.7 billion in profits in June. This accounted for more than half of the hedge fund's $6.6 billion pre-tax profit for the month. The teams capitalized on high-leverage strategies focused on index rebalancing, betting on the inclusion and exclusion of index components. Key events such as the S&P 500 quarterly adjustment, Nasdaq 100 quarterly changes, Russell annual rebalancing, SpaceX's rapid inclusion, and multi-asset end-of-quarter rebalancing provided significant trading opportunities. These activities contributed to Millennium's 4.1% return in June, boosting its year-to-date return to 10.5%.