Why did Alphabet's stock drop after earnings?

Alphabet shares fell 12.64% to $283.82 on October 29, 2026, the biggest drop since its 2004 listing, after the Q3 earnings release. Reported concerns include AI's threat to the core search business and negative free cash flow.

Can advertisers measure how their ads perform in AI Mode?

No. Google Ads automatically serves existing search, shopping, and Performance Max campaigns into AI Overviews and AI Mode, and results are reported combined with regular search ads. Advertisers cannot target or exclude AI screens alone.

How much does AI Mode monetization lag traditional search?

Google has not disclosed the gap. CFO Anat Ashkenazi and CBO Philipp Schindler described lower monetization but did not quantify it, and the breakdown between ad load and click price is not publicly available.

Large Language ModelsAI Business & IndustryZenn AI/ML3m agoNov 8, 2026, 06:00 JST

Pichai: search growth fastest in 5 years; AI Mode hits revenue

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3 Key Points

What happened
On Alphabet's Q3 2026 call, Pichai said search volume growth was the highest in five years, while Schindler said AI Mode's rapid query growth weighed on search revenue via its 'lower monetization'; search revenue still rose 12% year on year.
Why it matters
Google is admitting that its AI search experience earns less per query than traditional search, so even with more searches, revenue growth can slow—a shift ad buyers and investors should note.

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Context & Analysis

The Q3 2026 earnings call marked the first time Google explicitly counted AI Mode's low monetization as a drag on search revenue. Pichai framed search volume growth as the highest in five years, and AI Mode queries are about three times longer than traditional search queries, expanding what the author calls the 'area' of search. But Schindler said AI Mode's rapid growth affected search revenue through 'lower monetization,' and search revenue growth decelerated through 2026 even as paid clicks rose 8% and click prices 4% in Q3.

Google's response has been to widen AI Mode ads to new markets and test conversational ad formats, while building shopping tools like the Universal Commerce Protocol (UCP) and Direct Offers to capture purchases inside AI. Pichai described the sequence as building the best search experience first and monetization after, similar to the shift to mobile. Google has not disclosed the gap between AI Mode and traditional search monetization, leaving advertisers and investors to watch reported search revenue growth and click metrics.

FAQ

Why did Alphabet's stock drop after earnings?: Alphabet shares fell 12.64% to $283.82 on October 29, 2026, the biggest drop since its 2004 listing, after the Q3 earnings release. Reported concerns include AI's threat to the core search business and negative free cash flow.
Can advertisers measure how their ads perform in AI Mode?: No. Google Ads automatically serves existing search, shopping, and Performance Max campaigns into AI Overviews and AI Mode, and results are reported combined with regular search ads. Advertisers cannot target or exclude AI screens alone.
How much does AI Mode monetization lag traditional search?: Google has not disclosed the gap. CFO Anat Ashkenazi and CBO Philipp Schindler described lower monetization but did not quantify it, and the breakdown between ad load and click price is not publicly available.

Zenn AI/MLRead Original Article

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