Technology shares fall as investors question the cost of AI spending
This is a news organisation's same-day account, not an official record; the live report gives slightly different rounded figures in different updates, and the closing quotes can be revised. Linking the fall to AI spending is the reporters' explanation, not a measured cause; oil prices and a large cryptocurrency exchange hack were also moving markets. A one-day fall in share prices is a public market value and says nothing about private AI valuations or company cash.
What was claimed?
US shares fell on October 30, the last trading day of the month. Yahoo Finance's quotes at the close show the Nasdaq Composite down 2.86%, the S&P 500 down 1.89% and the Dow Jones Industrial Average down 1.15%. Yahoo Finance reports that it was the Nasdaq's worst day since June 5 and that October was its worst month since March 2025. It says the selling followed results from Amazon and Alphabet that missed analysts' expectations, and Intel's weaker-than-expected fourth-quarter outlook, which sent Intel shares down sharply in early trading. Amazon shares fell about 2% and Alphabet shares fell further after their worst day in more than 20 years on Thursday.
What does the evidence support?
Reported claim, not independently established
This week Alphabet and Amazon both reported that their spending on data centres exceeded the cash their operations produced over the period they disclosed. The share prices now show investors reacting to that spending, not just to revenue growth.
What are the limits?
This is a news organisation's same-day account, not an official record; the live report gives slightly different rounded figures in different updates, and the closing quotes can be revised. Linking the fall to AI spending is the reporters' explanation, not a measured cause; oil prices and a large cryptocurrency exchange hack were also moving markets. A one-day fall in share prices is a public market value and says nothing about private AI valuations or company cash.
Claim or evidence date: 2026-10-30. Last verified: .
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