Alphabet, Amazon and Microsoft lose hundreds of billions as AI spending hits results

Briefing by News4U · First published 2026-10-30 20:10:59 UTC

Alphabet lost just over $500bn in market value on 29 October 2026 after its AI summaries reduced search ad sales; its stock fell almost 13% to a six-month low, revenue rose 25% to $127.6bn but profits dropped 25% and free cash flow turned negative by more than $9bn (BBC Business). Amazon shares fell 6% after reporting negative $42bn cash flow and $201bn revenue, while Microsoft shares slipped less than 1% on $92.3bn revenue and $5bn lower AI spending (BBC Business). [1] [2]

Sources

1. Google value plunges by $500bn as its own AI search hits ad sales

   BBC Business · 2026-10-29 22:17:52 UTC · Full text

2. Google's search revenue Ferrari hits an AI-powered speed bump

   The Register · 2026-10-30 07:33:00 UTC · Excerpt

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