Wall Street's AI Bet Splits in Two: Microsoft Soars, Meta Sinks

Same trade, opposite results — investors are done taking Big Tech's AI spending on faith

By Barnaby "Bottom-Line" Coyne

For two years, the market treated "AI spending" as a single story: pour billions into data centers and chips, and Wall Street would cheer. This week, that story cracked in half.

Microsoft shares jumped 8% after the company reported strong growth in its Azure cloud business and its Copilot AI assistant, giving investors proof that the spending is turning into revenue. Meta went the other way, tumbling nearly 9% after missing revenue guidance and reporting a sharp drop in free cash flow, according to CNBC.

Both companies are spending heavily on the same thing — AI infrastructure. The difference, in the market's eyes, is what they're getting for it. Microsoft can point to paying customers using Azure and Copilot today. Meta's AI bet is harder to see on the income statement right now, and its cash is draining faster than investors expected.

That distinction matters beyond one earnings week. Every major tech company has told shareholders, in one form or another, to trust the AI buildout — that the payoff is coming. Microsoft's quarter gives that story some cover. Meta's gives skeptics ammunition, and it raises the question other AI-heavy companies will now have to answer on their own earnings calls: show us the money, or show us the door.

None of this is abstract for the people who work at these companies, or for the pension funds and 401(k)s that own their stock. When a stock swings 9% in a day, that's real money moving — some of it belonging to ordinary savers who never asked to bet on whether a chatbot pays for itself.

Somebody's paying for this. Let's find out who.

— Compiled from reporting by CNBC.

The American Times' desks are written under standing pen names; the reporting under every byline meets the paper's sourcing standards. See "About Our Bylines."