Alphabet Cash Flow Shock Triggers Historic Post Earnings Drop

The gap between the two tech giants widened before the market opened on Thursday.

Alphabet shares dropped approximately 10% in premarket trading. In the same window, Microsoft stock climbed nearly 4%. Investors reacted to third-quarter financial data that revealed divergent paths for the two companies. The primary driver for the sell-off was a shift in cash flow metrics that caught analysts off guard.

Alphabet reported a negative free cash flow of $9.07 billion for the quarter. This figure represented a much steeper deficit than the $2.70 billion shortfall analysts had projected. The company maintained its full-year capital expenditure guidance, which sits between $195 billion and $205 billion. If the stock closes down more than 9.77%, it will record the worst post-earnings performance since its 2004 initial public offering. Nasdaq-100 futures also slipped more than 1% in the early trading session.

Microsoft presented a different financial picture. The company reported $45.2 billion in capital expenditures and finance leases. That amount was up 30% from the previous year but came in below the $50.67 billion that analysts expected. Free cash flow for Microsoft declined by 27% to $18.63 billion. Despite the drop, the figure remained positive, distinguishing it from its rival's results.

Revenue from search advertising, Alphabet's largest income stream, grew 12% in the September quarter to reach $63.35 billion. This total still fell short of analyst expectations. Philipp Schindler, Alphabet's chief business officer, stated that the lower monetization within AI Mode contributed to the result. He noted that the company is now scaling ads within its AI Overviews and AI Mode products, including in international markets.

The results highlight a growing scrutiny of AI spending and returns across the technology sector. Ben Barringer, global head of technology research at Quilter Cheviot, described Microsoft's approach as measured with fewer surprises. He characterized Alphabet's results as messy and noted that the earnings call was poorly handled. Barringer argued that Google faces an innovator's dilemma. He said the company is unsure whether to protect its core business or join the disruption, and that Google has lost its edge with Gemini and lags peers on agentic AI.