The IT sector now makes up a record 39.4% of the S&P 500's market cap, surpassing the dot-com peak, as AI spending drives unprecedented market

The IT sector now makes up a record 39.4% of the S&P 500's market cap, surpassing the dot-com peak, as AI spending drives unprecedented market

Tech sector's share of S&P 500 at all-time high of 39%, surpassing previous highs in dot-com era and energy sector, with AI leadership driving gains.