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Alphabet Shares Plunge 10% Premarket, on Track for Worst Post-Earnings Drop Ever
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Alphabet Shares Plunge 10% Premarket, on Track for Worst Post-Earnings Drop Ever

Alphabet fell 10% in premarket trading after a weak Q3 report, while Microsoft rose nearly 4% on stronger free cash flow and measured AI spending.

October 29, 2026Source: cnbc.com ↗

Alphabet shares dropped 10% in premarket trading on Thursday, putting the company on course for its worst post-earnings reaction since going public in 2004, while Microsoft rose nearly 4% as investors reacted to both companies' third-quarter spending and free cash flow figures.

If Alphabet closes more than 9.77% lower on Thursday, it would mark its biggest-ever single-day drop following an earnings report.

Diverging capex and cash flow trends

  • Microsoft reported $45.2 billion in capital expenditures and finance leases for the third quarter, up 30% from a year ago but below analyst projections of $50.67 billion. Its free cash flow fell 27% to $18.63 billion, remaining positive.
  • Alphabet posted negative free cash flow of $9.07 billion for the third quarter, far below the $2.70 billion analysts had expected. The company maintained its full-year capital expenditure guidance of $195 billion to $205 billion.

Ben Barringer, global head of technology research at Quilter Cheviot, said "Microsoft is building out its architecture in a measured way and as such contains fewer surprises," while "Alphabet, by contrast, saw its share price hit after hours as a result of a fairly messy set of results and a poorly handled earnings call."

Nasdaq-100 futures were down more than 1% early Thursday.

Alphabet's search advertising business, its biggest revenue source, grew 12% in the September quarter to $63.35 billion but missed analyst expectations, adding pressure on the stock. Philipp Schindler, Alphabet's chief business officer, said the impact on search was partly due to lower monetization within the company's AI Mode, adding that Alphabet is now "scaling" ads within its AI Overviews and AI Mode products, including in international markets.

Google's search business has faced competition from AI chatbots such as OpenAI's ChatGPT and Anthropic's Claude, with Alphabet's own Gemini chatbot failing to keep pace. Barringer said "the problem for Google is it faces an innovator's dilemma and doesn't know whether to protect its core business or look to join the disruption. As such, Google has lost its edge with Gemini and is behind peers on agentic AI."

Source: CNBC

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