Microsoft's twin AI infrastructure investments in Europe and United States face earnings guidance pressures as capex scales to unprecedented levels.
Microsoft has placed two ambitious bets on artificial intelligence infrastructure in quick succession, expanding its cloud footprint across the Atlantic even as a securities class action stemming from January's steep sell-off looms over the stock. The company deepened its partnership with French AI lab Mistral AI in a multi-billion dollar deal to deploy thousands of NVIDIA Vera Rubin processors across European data centers, while simultaneously tapping AMD for its Helios rack system for Azure's US facilities. The moves reflect Microsoft's aggressive capital commitment — analysts expect fourth-quarter capital expenditure to top $42 billion, a 74% year-over-year surge — to cement its position in the cloud AI race.
The Mistral expansion, announced jointly by Microsoft President Brad Smith and Mistral CEO Arthur Mensch, integrates the Mistral Medium 3.5 and OCR 4 models into Microsoft Foundry, with Medium 3.5 also available in Copilot Studio. Medium 3.5, featuring 128 billion parameters and a 256,000-token context window, will be delivered via Azure Local across three deployment modes — full cloud, cloud-connected, and fully offline — targeting regulated industries including finance, healthcare, and manufacturing. Smith framed the deal as addressing European clients' need for advanced AI without surrendering data control. Roughly two-thirds of Mistral's existing customers already work with Microsoft, streamlining integration. No new equity investment was made; Mistral is separately pursuing a €3 billion funding round at a €20 billion valuation. A US decision to temporarily suspend Anthropic models for foreign customers provides European alternatives additional momentum.
On July 20, Microsoft and AMD announced a partnership centered on AMD's new Helios rack system, equipped with Instinct MI455X accelerators, EPYC Venice processors based on Zen 6 architecture, Pensando networking chips, and the ROCm software stack. Deliveries begin in the second half of 2026, initially targeting AI inference workloads on Azure. Microsoft also unveiled two new instance families: HDv2, offering roughly 500 CPU cores, 4 terabytes of RAM, and 32 terabytes of SSD storage for agent-based AI applications, and HXv2, packing 176 Zen 6 cores running above 5 gigahertz for semiconductor design tasks. This AMD partnership complements Microsoft's existing infrastructure efforts as the company's annualized AI revenue has reached $37 billion, up 123% year-over-year, with a commercial remaining performance obligation of $627 billion.
Both partnerships face their first major test on July 29, when Microsoft reports fiscal fourth-quarter earnings for the period ending June 30. Consensus forecasts revenue between $86.7 billion and $87.8 billion, with Azure growth in the 39% to 40% range on a constant currency basis and more than 20 million paying Copilot users. Bank of America projects revenue at $87.4 billion and $4.24 earnings per share, while Deutsche Bank estimates $87.62 billion and the same EPS, noting the stock trades at 20 times forward earnings — well below its five-year average of 29. Morgan Stanley rates Microsoft Overweight with a $600 price target, and broader analyst consensus is Strong Buy with a mean price target of $558.86 and a range of $400 to $680.
Yet this positive infrastructure narrative is shadowed by a class action lawsuit filed July 7 in the US District Court for the Western District of Washington (case 26-cv-02071), alleging securities fraud over statements about Copilot adoption and Azure growth during the period from May 1, 2025 to January 28, 2026. The suit stems from a roughly 10% stock drop on January 28, when shares fell from $481.63 to $433.50 after quarterly results disappointed; the Wall Street Journal later reported Copilot had only 15 million premium subscribers, below expectations. The complaint names CEO Satya Nadella, CFO Amy Hood, marketing chief Jared Spataro, and cloud and AI EVP Rajesh Jha as defendants. Law firms Bronstein, Gewirtz & Grossman, Bleichmar Fonti & Auld, and Levi & Korsinsky are representing shareholders, who have until August 11, 2026 to apply as lead plaintiff.
The stock has recovered from its January trough but remains well below its October 2025 all-time high. After closing Monday at €352.55 — a 2.37% gain that brought it within 6.23% of its 200-day moving average — shares slipped to €349.85 in Tuesday's session, down 0.77%, leaving them 26.82% below the 52-week high of €478.10 reached in late October. Analysts remain broadly bullish: Bank of America maintains a $500 buy target, Deutsche Bank sees $550 with annual earnings growth above 15%, and an independent assessment pegs fair value at $466, suggesting the stock is roughly 14% undervalued against an operating margin near 46%. Whether that valuation gap narrows may hinge on July 29's cloud growth numbers and the parallel legal proceedings.