Alphabet's Own Numbers Explain the $500 Billion Drop: Revenue Up 25%, Profit Down 25%, and $51 Billion Spent on Equipment in Three Months

Alphabet, the parent company of Google, lost just over $500 billion in stock market value on Thursday, the BBC reported, a day after releasing third-quarter results. The company's earnings release, filed with the Securities and Exchange Commission, shows why investors could read the same quarter as both a success and a warning.

The headline numbers were strong. Consolidated revenue rose 25% to $127.6 billion for the quarter ended Sept. 30, from $102.3 billion a year earlier, according to the filing, the company's 13th consecutive quarter of double-digit revenue growth. Operating income rose 30%, to $40.6 billion from $31.2 billion, and the operating margin was 31.8%.

Google Cloud drove most of that. Its revenue rose 103% to $30.7 billion, which the company attributed to demand for its AI infrastructure and AI products and to sales of its TPU chip systems. Google Services revenue rose 11% to $96.3 billion. Within that, Search and other revenue rose 12% to $63.35 billion, YouTube ads rose to $11.2 billion from $10.3 billion, and Google Network revenue was nearly flat at $7.46 billion.

"We had a strong quarter and are now on a half-trillion dollar revenue run rate," Chief Executive Sundar Pichai said in the release. "Our AI investments are driving overall Search query growth, including commercial queries. In fact, our year-over-year query growth rate is the highest it's been in the last five years." He said the Gemini app had reached one billion users and that YouTube Music and Premium had passed 150 million subscribers, including trials.

The bottom line moved the other way. Net income available to common stockholders fell to $26.2 billion from $35.0 billion, a drop of about 25%, and diluted earnings per share fell to $2.12 from $2.87, according to the filing. The main reason is in a single line: other income, which includes gains and losses on investments, swung from a gain of $12.8 billion a year earlier to a loss of $8.2 billion. Operating income, which excludes that line, rose.

The spending is the larger story. Alphabet's purchases of property and equipment, its capital expenditures, were $51.4 billion in the quarter, more than double the $24.0 billion a year earlier. For the first nine months of 2026 the total was $132.0 billion, compared with $63.6 billion in the same period of 2025.

That spending pushed free cash flow, defined by the company as operating cash flow minus capital expenditures, to negative $9.1 billion for the quarter, after negative $5.9 billion the quarter before. A year earlier it was a positive $24.6 billion. The BBC noted that this is only the second time Alphabet has reported negative free cash flow as a public company. Over the past 12 months, free cash flow was still positive, at $19.7 billion.

The filing also shows how Alphabet is paying for the buildout. During the quarter it issued 12 million Class A shares for net proceeds of $4.3 billion and 24 million Class C shares for $8.1 billion through an at-the-market program, with $27.6 billion remaining available. It also issued senior unsecured notes for net proceeds of $28.7 billion. Property and equipment on its balance sheet rose to $372.8 billion from $246.6 billion at the end of 2025. Headcount rose to 204,757 from 190,167 a year earlier.

Investors focused on search. According to the BBC, Google's search engine now defaults to AI summaries, and that affected the number of ads it could sell during the quarter. The stock fell almost 13% on Thursday, and the company's market value dropped to $3.46 trillion from $3.97 trillion. "Highlights the challenge of funding massive AI investments while maintaining the strength of established businesses," Tracy Woo, a principal analyst at Forrester, told the BBC. Philipp Schindler, Google's chief business officer, said he felt "very good about our trajectory," the BBC reported.

Other technology companies reported similar patterns this week. Amazon reported quarterly sales of $201 billion, up 11%, with negative cash flow of $42 billion, and its shares fell 6% in after-hours trading, according to the BBC.

The board declared a quarterly dividend of $0.22 per share on Class A, B and C stock, payable Dec. 14.

What the filing does not say: how much search ad revenue AI summaries displaced, and how much Alphabet plans to spend on capital projects in 2027. The company's 10-Q quarterly report, which will have more detail, is filed separately.