US Tech Stocks Seize 39.4% of S&P 500 as AI Boom Tops Dot-Com Era
Updated
Updated · Reuters · Jun 3
US Tech Stocks Seize 39.4% of S&P 500 as AI Boom Tops Dot-Com Era
3 articles · Updated · Reuters · Jun 3
Summary
39.4% of the S&P 500's market value now sits in the tech sector, a record that exceeds the roughly 35% peak reached during the 2000 internet bubble.
AI-driven spending has powered the surge: since the market's March low, tech has jumped nearly 47%, with Micron up 230% and Intel and AMD each gaining more than 160%.
Profitability is stronger than in the dot-com era, with tech generating more than a quarter of trailing 12-month S&P 500 net income—almost double its share at the 2000 peak.
The concentration is also sharpening worries about a narrow rally: only about 60% of S&P 500 stocks trade above their 200-day averages, and the cap-weighted index is far outpacing its equal-weight version.
Investors say that leaves the broader market increasingly exposed if the AI trade stumbles, even as many still see room for the theme to run.
While AI stocks soar, a hidden 'scare trade' punishes other industries. Which sectors are most at risk?
With AI's insatiable demand creating resource shortages, could the tech rally be throttled by a simple lack of power?
Is diversifying from today's AI leaders a prudent move or a costly mistake in this new technological era?
S&P 500 Surges to 7,600 in 2026: Tech and AI Dominate Index, Sparking Bubble Debate and Investor Caution
Overview
As of June 2026, the S&P 500 has soared to $7,602.4, fueled mainly by a powerful surge in technology stocks. This growth is driven by robust performance from tech and AI-linked companies, leading to an unprecedented concentration where the ten largest stocks now control over 40% of the index and AI-linked stocks alone make up 45% of its market capitalization. The market’s remarkable rise is heavily reliant on a single technological theme—AI—creating both impressive gains and significant risks due to this hyperconcentration. This unique dynamic sets the current market apart from previous eras.