It isn’t every weekend the people building the race car ask for a speed limit. On Saturday, leaders of four of the biggest AI companies agreed development should slow. The White House defended minimal regulation. On Monday, investors had to decide what that was worth. They didn’t dump AI. They sold the companies that make its chips and bought the ones whose data centers use them. Own an index fund? You held both sides.
Who Said What
Anthropic’s Dario Amodei argued an extra year or two could buy time for alignment — keeping powerful AI working for its creators. He asked Washington to “mediate or at least enable” a coordinated slowdown, to avoid antitrust trouble. OpenAI’s Sam Altman, Elon Musk and Demis Hassabis of Google’s DeepMind agreed.
President Trump said the U.S. must outpace China. On Monday, over speakerphone with Nvidia (NVDA) chief Jensen Huang, he called AI takeover fears a hoax. White House adviser David Sacks said the companies don’t need anyone’s permission: “Go ahead and pace the frontier. You are the ones setting it.”
Chips Down, Customers Up
Monday’s market didn’t reject AI; it sorted who’d feel a slowdown first. The PHLX Semiconductor Index fell 5.9%, its worst day since July, and Nvidia lost 3%. Microsoft (MSFT), Alphabet (GOOGL) and Meta Platforms (META) — hyperscalers, whose data centers buy those chips — each rose 2% or more.
Chip makers such as Micron Technology (MU) need new orders to keep growing. Investors seemed to bet that Microsoft and its peers stay among the world’s most profitable companies even if AI spending cools.
If You Own the Index
Own index funds and you own the AI build-out, chosen or not; the Journal credits the AI trade with much of the market’s multiyear rally. On Monday, the S&P 500’s worst performers were AI hardware suppliers and its best was cybersecurity firm CrowdStrike (CRWD). The index slipped 0.5%.
Illustration only: on $100,000, Monday’s 0.5% index dip is about $500; the chip index’s 5.9% drop would be about $5,900. Tuesday’s close: Nvidia up 0.6%, Microsoft down 1.6%, the S&P 500 off another 0.45%. Monday’s verdict didn’t survive Tuesday intact.
What’s worth checking is the AI stacked on top: a tech fund here, a few chip stocks there. B. Riley Wealth’s Art Hogan noted some semiconductor names have tripled this year, and winners like that can quietly outgrow their slot. Monday was a sprinkle for index investors, the right weather to learn which closet the umbrella’s in. Bring every account’s statement; fifteen minutes is enough to count the AI you own.