Alphabet Sales Grew 25%, But the Stock Still Fell Sharply

Alphabet's shares fell sharply on October 29, 2026, a day after the company reported third-quarter revenue of $127.6 billion, up 25%. Revenue is the total money a company takes in from selling its products and services. Even so, the figure came in below the $128.2 billion estimate.

Alphabet released the results on October 28. It discussed them on a call that afternoon at 1:30 p.m. Pacific Time, or 4:30 p.m. Eastern.

How far the stock fell depends on the source. Reuters said Alphabet shares dropped nearly 12% as spending on artificial intelligence (AI) outweighed the growth. The Idaho Statesman and the Miami Herald put the drop at 13.2%. They blamed the revenue miss and a faster pace of AI-related cash burn.

Cash burn is the speed at which a company uses up its cash. In this case, the spending tied to AI.

The wider market fell too. Reuters reported that the Nasdaq, a stock index weighted toward technology companies, fell more than 1% on October 29. Alphabet's results revived worries about rising AI costs. An index is a group of stocks used to measure how a part of the market is doing.

The revenue numbers are easier to understand in parts. Google Services, the largest part of the business, brought in $96.3 billion, up 11%. That leaves $31.3 billion of the $127.6 billion total coming from outside Services. Services grew 11% while the total grew 25%, so the rest must have grown faster than the total.

The miss itself was small, about half a percent below the estimate. That makes it hard to explain the selloff by the revenue shortfall alone. This is where cash burn comes in.

For anyone who owns Alphabet directly or through an index fund, the key question is whether the AI spending will eventually bring in enough revenue and cash. One trading day cannot answer that. It can show how quickly a large stock can drop when a revenue miss arrives alongside worries about spending. Alphabet also carries a big share of major indexes, so a drop this size in one company reaches the Nasdaq and the retirement and pension accounts that follow it.

Skeptics will point to the miss and the cash burn. Supporters will point to the 25% total growth and to the Services line, which grew more slowly at 11%. Both views rely on the same report. In my view, the better test is the trend in revenue and cash over the next several quarters, not how the stock reacted in one session.