Microsoft blinked a little in the AI capex race. Wall Street loved it.

Jul 31, 2026 04:55 PM - 1 day ago 61

For respective years, Big Tech has operated nether a elemental rule: walk much connected AI, aliases investors will presume you're falling behind. This earnings season, that norm whitethorn person changed.

Even a twelvemonth ago, if 1 of the unreality giants had simply held its AI spending plans dependable while rivals kept expanding theirs, Wall Street astir apt would person panicked. Investors would person assumed AI request was cooling aliases that the institution had mislaid assurance successful its competitory position.

Instead, Microsoft did precisely that this week, and its banal exploded higher — adding the astir marketplace worth successful 1 time by immoderate US institution successful history.

Late Wednesday, the institution kept its 2026 superior spending scheme unchanged. (It really fell from $190 cardinal to $175 cardinal owed to an accounting tweak).

Meanwhile, Google added another $15 billion to its forecast, Amazon accrued 2026 spending by $20 billion, and Meta boosted its plans, too.

The opposition is moreover starker erstwhile you look beneath the header numbers. Memory spot prices person soared, which has pushed capex moreover higher. Microsoft isn't immune to this. That intends its determination to clasp spending dependable is arguably much cautious than it first appears. If representation costs are rising while your wide fund stays flat, little money is near complete for really building those AI information centers.

And yet, investors loved it. When CFO Amy Hood outlined the blimpish spending scheme connected a telephone pinch analysts, Microsoft shares instantly surged.

By the extremity of Thursday, the banal was up 15%, Microsoft's champion time connected the marketplace successful almost 2 decades. Strong Azure maturation and surging Copilot take helped. But investors were mostly enthused by grounds that personification is reasoning difficult astir returns, not conscionable spending.

Before net season, I wondered whether immoderate of the tech giants would blink successful the race. Microsoft blinked a little, and Wall Street applauded.

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Alistair Barr is the writer of Business Insider's Tech Memo newsletter. Sign up here. Before that, he was BI's Global Tech Editor and the Big Tech squad leader astatine Bloomberg, pursuing a reporting profession astatine The Wall Street Journal, USA Today, Reuters, and MarketWatch. Alistair won a Gerald Loeb Award successful 2007 for sum of short trading and was a finalist successful 2013 for scoops connected the Facebook IPO. More recently, he won a 2024 San Francisco Press Club grant for commentary. Got a tip? Reach retired utilizing the unafraid messaging app Signal (+1 415-341-4927) aliases via email connected [email protected].ExpertiseAlistair oversees each things Big Tech, on pinch startups and task capital. He writes study and columns astir topics including generative AI, ample connection models, unreality computing, semiconductors, online search, e-commerce, EVs, robotics, and autonomous vehicles.Popular StoriesArtificial Intelligence:It's getting harder to make large leaps astatine the frontier of AIOpenAI's AI-adjusted net numbers person echoes of Groupon and WeWorkDeath by LLM: Stack Overflow's decline, and its scheme to survive, shows the early of free online information successful an AI worldCloud computing:Amazon dominated the first unreality era. The AI roar has kicked disconnected Cloud 2.0, and the institution doesn't person a caput commencement this time.In cloud, there's AI (which is hot) and everything other (which is not)Chips:Why Intel is still truthful important: Real countries person fabsApple's made-in-the-USA chips awesome a turnaround for the US's large semiconductor betEVs and Tesla:Tesla's AI supercomputer has a Silicon Valley municipality rushing to meet surging energy demandTesla's Cybertruck is outselling almost each different EV successful the USOnline Search:Google is losing its position arsenic a verbA elemental measurement to hole search: Bright pinkish ads