Alphabet suffered its steepest single-day share price fall on Thursday, with its stock dropping nearly 13% after the company released its third-quarter financial results. The decline was the worst trading session since Alphabet became publicly listed in 2004, surpassing earlier heavy sell-offs, including losses of more than 10% in March 2020 and September 2008.
Based on calculations of market data, the company’s market capitalisation fell by roughly $482 billion. That makes it the second-largest single-day loss in market value ever recorded by a US-listed company. Only Nvidia has lost more, shedding about $593 billion on January 27, 2025, after concerns among artificial intelligence investors triggered by China’s DeepSeek.
Alphabet’s results mix cloud and Gemini gains with search weakness
The third-quarter figures painted a mixed picture for investors. Google Cloud delivered strong growth, with revenue more than doubling to approximately $31 billion. The company’s Gemini application also surpassed one billion users, which highlighted its growing presence in the artificial intelligence market.
The core search business, however, fell short of expectations. Search revenue rose 12% to about $63 billion, below the $65 billion that Wall Street had estimated. Alphabet’s latest fall also exceeded the $400 billion market-value loss recorded by SpaceX on June 22, which had previously ranked as the second-largest single-day decline. In dollar terms, Thursday’s drop was the largest in the company’s own history, surpassing a previous record decline of approximately $275 billion on July 23, 2026.
According to Bespoke Investment Group, the sell-off was also the most significant post-earnings stock decline since the company went public. The previous record was a nearly 10% fall in July 2008.
Heavy AI spending and divided analyst views
Investor concerns were intensified by the company’s large artificial intelligence investments. Free cash flow, which measures the cash left after capital expenditures and other investments, moved into a deficit of approximately $9 billion. Spending on data centres and AI infrastructure increased, and investments and financial commitments involving AI research companies also added to the pressure.
Pivotal Research chief executive Jeffrey Wlodarczak suggested that investors may increasingly see artificial intelligence as a competitive threat to Google’s traditional search business. He said bearish investors could read the quarter as a sign that AI is beginning to have a material effect on the company’s search operations.
CFRA analyst Angelo Zino took a more positive view. He suggested that the fall in the stock could potentially represent a buying opportunity.
A wider wave of large losses across US technology stocks
Alphabet’s decline comes amid a broader rise in major market-value losses among US-listed companies. Based on market data calculations, US-listed stocks recorded single-day market capitalisation declines of at least $200 billion on 18 occasions in 2026 through Wednesday. That compares with 13 such occurrences throughout 2025 and none before 2022.
Alphabet has also lost approximately $1.4 trillion in market capitalisation since reaching its record valuation in May. Pressure on technology companies extended beyond Alphabet. Amazon, the last of the three major cloud providers to report results that week, announced accelerated cloud growth alongside record cash outflows after Thursday’s market close.
Amazon Web Services recorded revenue growth of 39%, its fastest expansion in nearly five years. However, the company’s trailing 12-month free cash flow deteriorated to a record outflow of more than $42 billion. Amazon shares also fell in after-hours trading, suggesting that concerns over high AI infrastructure spending and cash-flow pressure are spreading across the wider technology sector.
