What changed
US technology shares fell sharply on 30 October as investors reacted to rising AI spending and weaker operating signals. Intel fell as much as 30% and was on track to lose more than $130bn in market value; the Nasdaq opened down 2.5%, while Amazon, Alphabet, Reddit and Roblox also declined.
Why it matters
The sell-off puts a simple question under the AI boom: when does heavy spending start producing enough cash and revenue to justify it?
Intel expects weaker fourth-quarter revenue and said PC weakness could continue through the first half of next year. At the same time, it is increasing equipment spending. Amazon also reported that its spending had risen sixfold over three months and exceeded the cash it generated.
Alphabet’s market value fell by more than $500bn after it said AI summaries were affecting search advertising revenue. Reddit warned that Google’s AI-driven search was reducing referral traffic, while weaker daily-user figures helped push its shares down 26%. Roblox fell nearly 20% after reporting a drop in daily active users.
My read is that this is an earnings reckoning, not yet proof that investors have abandoned AI. The immediate concern is whether the costs of building these systems are arriving faster than the revenue to pay for them. If similar warnings continue, the market’s focus will shift further from AI promises to cash flow, user growth and the timing of returns.
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