Microsoft's AI Datacenter Goes Live; Stock Flat, Miners Cash In

Microsoft turned on its Fairwater AI supercomputer in Mount Pleasant, Wisconsin, on June 23. The facility holds hundreds of thousands of NVIDIA GB200 GPUs and is designed to power Azure's AI workloads. The stock barely moved. MSFT shares have traded between $350 and $390 for most of 2026, sitting near $383 on July 8.

Microsoft plans to spend roughly $190 billion in capital expenditures this calendar year. The company's AI business has reached a $37 billion annualized revenue run rate. That number looks less impressive when stacked against the infrastructure spend needed to sustain it. One day before Fairwater went live, Microsoft announced a 2-gigawatt datacenter campus in Pecos, Texas. The company calls these locations “AI superfactories” and plans more in Atlanta and elsewhere.

Microsoft signed a $9.7 billion deal with IREN, a former Bitcoin miner. IREN has shifted from cryptocurrency mining to hosting AI workloads. The same pattern is playing out at other public mining firms. Their core skill – managing massive power loads and computing clusters – translates directly to the hardware stack AI demands.

For shareholders, the stock's sideways action reflects a market that is pricing in execution risk rather than demand uncertainty. The $37 billion AI revenue number proves companies want the product. The open question is whether $190 billion in annual capex eventually produces returns that justify the spend. MSFT carries an Alpha Score of 56, a "Moderate" rating that signals caution. NVIDIA, whose GPUs fill the Fairwater racks, scores 71 – also Moderate but stronger on momentum. IREN's Alpha Score is 25, "Weak", reflecting the uncertainty of its transition.

Microsoft reports quarterly earnings on July 29. The call will include an update on AI revenue margins and data center utilization. Those numbers will tell investors whether the infrastructure spending is starting to pay off, or whether the gap between capex and returns is widening.