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Alphabet shares plunge 12% after AI Mode search slowdown

By Drooid · Oct 29, 2026 · How we work

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Summary

Alphabet Inc. shares fell more than 12% Thursday, its worst-ever single-day drop.
The plunge erased over $500 billion in market value, second-largest one-day loss after Nvidia’s 2025 drop.
Alphabet reported Q3 revenue of $127.58 billion below forecasts and a $9.07 billion free-cash-flow loss.
VP Philipp Schindler said Google’s “AI Mode” cut search ad impressions driving sales decline.
The drop pulled Nasdaq down about 1.5% and the S&P 500 off roughly 0.4%.

Summary

Google unveiled Gemini 4, touting coding and cybersecurity strengths despite analysts saying it trails Anthropic and OpenAI tools.
Google Cloud reported a record $30.7 billion revenue, driven by multi-year AI infrastructure contracts in cybersecurity, retail, and finance.
Advertisers now face measurement challenges as Google shifts to multi-turn ads in AI Mode, reducing reliance on impression counts.

Summary

Alphabet suspended its share-buyback program, prioritizing capital expenditures and dividend payments.
It raised $28.7 billion in senior notes and sold $12.4 billion of stock to finance its AI build-out.
Alphabet’s $0.22 quarterly dividend yields 0.26% and is funded by operating cash flow despite negative free cash flow.
Cash reserves total $56.33 billion, debt-to-equity 0.143, covering interest 175.5 times, with commitments $924 billion and leases $152 billion.

History

Yahoo! Inc.’s March 2008 stock plunge—15% lower, erasing about $12 billion and reflecting a 22% fall in ad impressions—coincided with the broader 2008 bear market, when the Dow Jones Industrial Average slipped 20% by June and the S&P 500 lost roughly half its value. The slump foreshadowed the September financial crisis that later destabilized tech valuations.

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Yahoo! Inc.’s March 2008 stock plunge—15% lower, erasing about $12 billion and reflecting a 22% fall in ad impressions—coincided with the broader 2008 bear market, when the Dow Jones Industrial Average slipped 20% by June and the S&P 500 lost roughly half its value. The slump foreshadowed the September financial crisis that later destabilized tech valuations.

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