Alphabet Suffers Worst Day Ever, Shedding $500 Billion in Value on AI Advertising Fears

Naderium · reddit · 2026-10-30

Alphabet shares recorded their worst single day ever, wiping out roughly $500 billion in market value. The selloff reflects investor fears that AI chatbots and generative search are eroding Google's core search advertising business — a landmark moment showing AI reshaping big tech valuations.

Related event: Alphabet Misses on Revenue and EPS, Wiping Out ~$500B in a Day(43 posts)→

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