Key Highlights

  • Google Search runs at more than USD 250 billion a year against roughly USD 1 billion for ChatGPT ads, a private bank's CIO office says, so scale keeps the threat to Alphabet (NASDAQ:GOOGL) in proportion for now.
  • Alphabet (NASDAQ:GOOGL) shares fell about 8% after results on October 28, 2026, even as Google Cloud Revenue roughly doubled, the same note says, arguing that markets price direction of travel and not only size.
  • Search growth slowed to 12% in the third quarter, from 17% and 19% in the previous two quarters, according to the note, which treats that slowdown as the datapoint investors are watching most closely.
  • D.A. Davidson's Gil Luria argues that ChatGPT ad budgets will come mainly out of Search and that consumer attention is zero-sum, which in his view also exposes YouTube, as the note describes.

The Numbers Behind the Move

A note from a private bank's CIO office, dated October 29, 2026, frames the Alphabet question in numbers. Google Search runs at more than USD 250 billion a year, while ChatGPT ads run at roughly USD 1 billion. Search growth slowed to 12% in the third quarter, from 17% and 19% in the previous two quarters. Alphabet (NASDAQ:GOOGL) shares fell about 8% after results on October 28, even as Google Cloud revenue roughly doubled, according to the same note. Simple arithmetic on the two scale figures puts Search at roughly 250 times the size of ChatGPT ads today. ChatGPT's ad Business passed a USD 1 billion annualised run rate in early October.

How ChatGPT Ads Compete

The note describes a sponsored answer in ChatGPT as the closest substitute yet for a Google search ad. It reaches the user at the moment of intent, and chatbot users describe exactly what they want in their own words. The ads appear as labelled sponsored cards beneath answers with commercial intent. Paid tiers stay ad-free, the note adds. D.A. Davidson's Gil Luria argues that these budgets will come mainly out of Search. The note says OpenAI has told investors it expects about USD 2.5 billion of ad revenue this year and USD 100 billion by 2030, a target that still sits well below what Search earns today.

Risks and What to Watch

The note judges the realistic risk to be a gradual erosion of pricing power, not a collapse of Search: for the first time in two decades, advertisers chasing intent have a credible second channel. It also says Alphabet is far from defenceless, with its Gemini app and AI Mode in Search each reaching around a billion monthly users and ads being rolled out inside AI answers globally. The note also says OpenAI's ad targets are projections to investors, not results. Items to watch include Search growth after the 12% reading, the pace of ChatGPT's ad run rate, and whether Google Cloud's growth keeps offsetting the pressure on Alphabet (NASDAQ:GOOGL) sentiment.

Where Things Stand

Alphabet fell about 8% after its October 28, 2026 results because, in the view of a private bank's CIO office, markets price the direction of Search growth as well as its size. Search growth slowed to 12% from 17% and 19%, even though Search at more than USD 250 billion a year dwarfs ChatGPT ads at roughly USD 1 billion and Google Cloud revenue roughly doubled. The note sees a gradual squeeze on pricing power, not a sudden loss. These are the note's views, not ours, and not Investment advice.