S&P 500 gains 142% with AI stocks, just 16% without them
The S&P 500's recent growth is heavily concentrated in AI stocks, which now account for 45% of the index's total market capitalization.Summary
Between May 2024 and June 2026, the S&P 500 surged by 142%, but this growth drops to a mere 16% when AI-related stocks are excluded. This extreme concentration, where AI companies represent 45% of the index's total market cap, suggests that market gains are primarily driven by a handful of tech giants like Apple, Microsoft, and Nvidia.
While analysts from firms like Capital Economics and Fundstrat maintain bullish forecasts based on the necessity of AI infrastructure, concerns remain regarding the $1.4 trillion in AI-linked debt. This reliance on a single thematic cluster creates significant risks for passive index fund investors, as a potential revenue miss or shift in credit conditions could cause a rapid market correction.
(Source：Crypto Briefing)