"Nasdaq 100 Rebalance Triggers Dip for Market Heavyweights"
Shares of Apple, Microsoft, and other heavyweight companies dipped as Nasdaq Inc announced a rebalance of its Nasdaq 100 index to address overconcentration. The adjustment, based on shares outstanding as of July 3, will be announced on July 14 and take effect on July 24. This will require investment funds tracking the index to adjust their portfolios and sell shares of companies with reduced weight. Wall Street's most valuable stocks have seen significant gains this year, further increasing their weight in the index.