Semiconductor Stocks Reach Record 19.7% of S&P 500 Amidst AI Rally

Semiconductor companies now constitute a record 19.7% of the S&P 500 index, nearly quadrupling their weighting since June 2020. This unprecedented concentration highlights the significant impact of the artificial intelligence boom on the technology sector. Nvidia has been a primary driver of this expansion, with gains broadening to include other major players like Broadcom, TSMC, ASML, AMD, Micron, and SanDisk.