• Alphabet shares tumbled roughly 13% intraday, wiping out about $489 billion in market value, as investors reacted to slowing search-advertising growth and a sharp profit miss.
  • The company reported negative free cash flow of $9.1 billion for the quarter, stoking fears that AI investments are pressuring its core business.
  • Despite Google Cloud revenue more than doubling, concerns mounted that AI is cannibalizing Google Search economics before cloud gains can fully offset infrastructure costs.

A Staggering Selloff

Alphabet Inc. shares plummeted as much as 13% on Wednesday, putting the tech giant on track to shed approximately $489 billion in market capitalization—a staggering one-day loss that underscores growing unease over the company’s AI transition. The selloff, which ranks among the largest single-day declines in U.S. corporate history, came after the company’s third-quarter earnings report late Tuesday fell short of analyst expectations on key metrics.

The drop reflects a dawning realization among investors that the company’s aggressive push into artificial intelligence may be undermining the very business that funds it. “The market is waking up to the fact that AI is not a free lunch,” said one portfolio manager at a major asset manager, who declined to be named discussing the firm’s positions. “Google is spending tens of billions on infrastructure while its cash cow—search advertising—is showing cracks.”

The Numbers Behind the Rout

Alphabet reported revenue of $127.6 billion for the quarter, up about 25% year-over-year but below the $128.2 billion consensus estimate cited by LSEG (LSEG.L). Earnings per share came in at $2.12, well short of the $3.01–$3.02 analysts had expected. Net income fell 25% to $26.17 billion, dragged down in part by an $8.7 billion loss on equity investments.

More troubling for some investors, free cash flow turned negative $9.07 billion, deteriorating from negative $5.9 billion in the prior quarter. It marked the second consecutive quarter of negative free cash flow—a first in the company’s 22-year history as a public company, according to Reuters (TRI).

The core issue is monetization. Google is attracting more AI-powered searches, but those queries currently generate less advertising revenue than traditional searches. Search and other advertising revenue grew 12% to $63.35 billion, a slowdown from 17% growth in Q2 and 19% in Q1.

Google Cloud was a bright spot, with revenue surging 103% to $30.71 billion on strong enterprise AI demand. But that was not enough to offset the advertising disappointment. Alphabet maintained its 2026 capital-expenditure forecast of $195 billion–$205 billion and signaled another significant increase in 2027, reinforcing concerns about when spending will translate into sustained cash generation.

Cloud Growth Can’t Mask Search Woes

While Google Cloud’s performance underscores robust demand for AI compute, the segment’s profitability remains under scrutiny. The cloud business has yet to prove it can generate enough profit to fund the massive infrastructure buildout, especially as search advertising—the company’s primary profit engine—shows signs of strain.

“The concern is whether AI search can sustain Google’s advertising model,” said Jordan Klein, an analyst at Mizuho (MFG), in a note to clients. “These results will bring cannibalization fears back to the forefront.”

Indeed, Google’s leadership has compared the current AI transition to its earlier shift to mobile, arguing that building the user experience first will eventually lead to improved monetization. CEO Sundar Pichai said on the earnings call that AI is already driving Search’s fastest query growth in five years. But investors appear skeptical that the economics will follow the same path.

Regulatory Clouds Gather

The selloff also comes amid heightened regulatory scrutiny of Google’s AI practices. The European Publishers Council filed an antitrust complaint in February, alleging that Google’s AI Mode and AI Overviews use journalistic content without consent and replace visits to original publishers. The European Commission had already opened an investigation in December, according to MLex (RELX).

While the earnings coverage did not identify a new regulatory decision as the immediate trigger for the selloff, the complaint highlights a growing risk: regulators may force changes to how Google obtains and uses content for AI search, potentially affecting both costs and product design.

What’s Next

Analysts are likely to focus on whether the slowdown in Search persists, how quickly AI advertising improves, and whether free cash flow recovers. UBS (UBS) said the results would bring Search “cannibalization fears” back to the forefront.

For now, the market’s verdict is clear: Alphabet’s AI spending spree is no longer being given a free pass. With competition from Microsoft (MSFT)—whose Azure revenue grew 48% to $33.2 billion and whose shares rose nearly 4% in premarket trading—the pressure is on Google to prove that its AI investments can generate returns at scale.

Alphabet did not immediately respond to a request for comment.

Correction: An earlier version of this article misstated the prior quarter’s free cash flow figure. It was negative $5.9 billion, not negative $5.6 billion.