The last time technology consumed this much of the S&P 500, it was March 2000. The information technology sector has hit 39.4% of the index’s total market capitalization, blowing past the previous record of nearly 35% set during the dot-com bubble.
And when you add in the mega-cap companies outside the traditional IT classification that are pouring money into artificial intelligence, like Alphabet, Amazon, and Meta, the combined share crosses 50% of the S&P 500’s total market value.
The numbers behind the surge
Since the S&P 500 hit its low point in March 2026, the IT sector has gained approximately 47%. The broader index recovery has been strong, but tech has been doing the heavy lifting.
Semiconductors have been the standout performers within the sector. Micron has surged 230% from that March low. Intel and AMD have each climbed over 160%.
