The semiconductor sector's market capitalization in the S&P 500 has reached a record 18.8%, according to The Kobeissi Letter. This marks a more than threefold increase since 2022, underscoring the sector's dominance in the current technology cycle. The semiconductor index SOX has surged approximately 546% during this period, reflecting the sector's robust growth. This increase in market cap share surpasses over half of the peak levels seen during the dot-com bubble in 2000, indicating a significant structural shift. The U.S. equity market is increasingly focused on the AI and semiconductor industries, with tech stocks exerting a historically high influence on the overall index.