Global markets are tied to the Magnificent 7 and AI, but LLMs are down 5 days in row

The Mag 7 tech stocks—Nvidia, Apple, Microsoft, Google, Amazon, Broadcom and Meta—account for 36% of the S&P’s market capitalization and a larger share of its profit growth.

By sheer scale, almost all investors are already exposed to their AI bets.

Related: Jim Cramer Says “The Year of Magical Investing Is Over”

The top 10 U.S. companies now represent 22% of the market capitalization of all the world’s stock markets.

That concentration turns AI into a single point of failure.

If AI adoption stalls, if costs fail to come down, or if revenue fails to scale, the impact will not be contained. Earnings, capital spending and valuations would all reprice together.

The warning signs are no longer theoretical:

• Adoption has stalled at all LLMs in December and for all of 2025
• LLMs have failed to report flat adoption rates on 10-Qs
• Salesforce has retrenched, admits AI is not working
• MIT: 95% of all AI-for-business implementations fail
• Unrealistic valuations: Anthropic’s $350B is based on $11B investment
• OpenAI considers advertising, fails to monetize world’s largest AI user base
• Scale has failed to produce revenue commensurate with capex
• Jim Cramer and WSJ’s James Mackintosh have called the AI bubble
• Token-based pricing is inaccurate
• Inference costs scale up with adoption, not down
• Rick Perry’s datacenter developer Fermi America, lost 40% after losing a tenant
• Oracle is down 40%, losing $25oB in market cap