The Week the Cracks in the AI Trade Grew Deeper — WSJ

What happened

Cracks in the AI trade deepened, ending with a sharp tech selloff Friday that pushed the Nasdaq composite to its worst day since June and worst month in over a year. Alphabet fell 13% Thursday after slowing search-advertising growth, its worst day on record.

Confirmed

Global impact / market context

AI-linked stocks have led markets higher, so weakening growth and shrinking cash at major tech firms can force investors to reassess what they pay for future AI profits. A 13% one-day drop at Alphabet also hurts diversified holders like Berkshire Hathaway, spreading losses beyond pure tech funds.

Analyst inference

For months, smaller indebted AI companies struggled while large firms' profits reassured Wall Street that higher interest rates were tolerable. This week earnings disappointed, including Alphabet's slowed search-advertising growth tied to 'AI mode' queries, so investors are rethinking the assumption that big AI winners keep delivering regardless of costs.

Analyst inference

What to watch

1. Alphabet's 13% Thursday decline was its worst day on record, and slowing Google search-advertising growth was partly tied to 'AI mode' queries, a signal of AI cannibalizing existing business. Confirmed
2. Watch whether upcoming earnings from major AI build-out firms show slowing revenue growth or shrinking cash piles, which would test the idea that large companies can keep funding AI spending. Proposed
3. Smaller indebted AI companies remain vulnerable if higher interest rates persist; widening credit stress there could spread caution to bigger tech names and to investors holding diversified funds like Berkshire Hathaway. Analyst inference

Evidence

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