US Inflation Data Cement December Rate-Hike Bet, Nvidia Falls 5.4%

US consumer prices rose 0.4 percent last month, beating analyst forecasts and locking in expectations of a Federal Reserve rate hike in December. The surprise pushed Wall Street lower on Tuesday and hit technology stocks hardest: Nvidia surrendered 5.4 percent.

The Dow Jones Industrial Average closed down 0.3 percent at 52,231.89 points. The broader S&P 500 lost 0.4 percent to 7,520.93. The Nasdaq, home to the large technology names, fell 0.7 percent to 25,065.87.

The yield on two-year US Treasuries, which tracks rate expectations, jumped to 4.736 percent after the inflation print. Higher rates raise borrowing costs, and analysts expect the tech giants' artificial intelligence investment programs to become markedly more expensive to finance.

The numbers, in brief:

• Consumer prices: +0.4 percent month-on-month, above consensus
• Dow Jones: -0.3 percent to 52,231.89
• S&P 500: -0.4 percent to 7,520.93
• Nasdaq: -0.7 percent to 25,065.87
• Two-year Treasury yield: 4.736 percent

What did Fed officials say?

Several Federal Reserve representatives commented on rates on the same day, and none of them pushed back against further tightening.

Fed Governor Christopher Waller backed a rate increase in December and raised the possibility of a larger 50-basis-point move should inflation worsen. Lorie Logan, president of the Dallas regional Fed bank, called for at least two additional rate steps. Her Kansas City counterpart Jeff Schmid described current monetary policy as "pretty accommodative" — his words, in the original German report rendered as "ziemlich akkommodierend."

The coordinated tone leaves little room for a dovish surprise in December. Markets now price the hike as the base case rather than a risk scenario.

Why did Nvidia drop 5.4 percent?

Nvidia led the technology sector lower, and the decline has a specific corporate trigger beyond the rate story.

The company has opened an internal investigation into espionage allegations connected to the Chinese businesswoman Alice Huang, according to the report. The case touches Chief Executive Jensen Huang directly: investors are pricing in growing uncertainty about his future at the top of the company.

Citing the magazine "The Information," the report states that the CEO's relationship with Huang enabled the delivery of chips worth at least 7.5 billion dollars through Chinese firms. That figure gives the investigation a scale that goes beyond a routine compliance review. A 5.4 percent single-day drop on a 7.5-billion-dollar chip-flow question shows how sensitive investors have become to any governance risk at the company that anchors the AI trade.

What does the Anthropic IPO change?

A second event is compounding pressure on AI stocks this month: the expected stock market debut of the AI lab Anthropic.

Anthropic could receive a valuation of up to 1.4 trillion dollars in the listing, which investors expect within the current month. A flotation of that size would force other AI heavyweights to compete more aggressively for investor capital, and it could trigger portfolio shifts as fund managers free up room for the new listing.

For the incumbents, that means two pressures at once: costlier money from the rate path, and a rival for capital from the IPO calendar. Nvidia, already down on the investigation news, sits at the intersection of both.

Where does that leave the market?

Three threads now run in the same direction. Inflation came in hotter than expected, Fed speakers endorsed further hikes — with Waller explicitly keeping 50 basis points on the table — and the corporate news flow around Nvidia and Anthropic adds idiosyncratic risk inside the technology sector that has carried the market.

The two-year yield at 4.736 percent is the cleanest summary of the shift: funding costs for the AI investment cycle are rising before a single December decision has been made.

December's Fed meeting now decides whether the feared hike arrives — and whether 50 basis points become the operative scenario.