The AI infrastructure market continues to develop rapidly, but investors’ focus is shifting to the payback of large-scale capital expenditures. In a daily review of the U.S. market, Freedom Broker analysts note that market participants are discussing how quickly investments in artificial intelligence infrastructure will be able to generate returns, while companies meanwhile are expanding capacity and signing multibillion-dollar contracts.
Nvidia disclosed a stake in Nebius
Shares of Nebius Group (NBIS) rose nearly 20% after Nvidia (NVDA) disclosed a 9.3% stake in the company — about 22.26 million shares. Of this amount, 1.19 million shares are already owned by Nvidia, and the company can receive another 21.07 million shares upon exercise of a prepaid warrant. It was acquired as part of Nvidia’s investment of $2 billion announced in March. Until September 11, the buyer is not entitled to exercise the warrant or sell the corresponding shares.
AMD launches the Helios AI system
Advanced Micro Devices (AMD) announced the Helios AI line, which will compete with Nvidia’s Grace Blackwell and Vera Rubin systems. Helios AI is the latest rack-scale AI infrastructure designed to train and serve giant neural networks. Shipments of the solutions are expected to begin before the end of this year. Microsoft (MSFT) intends to use AMD systems in its data centers.
AMD’s Helios rack architecture integrates 72 AMD Instinct MI455X GPUs, AMD EPYC Venice processors, and AMD Pensando Vulcano networking technologies based on UALink. The company positions the system as infrastructure to accelerate training and inference for next-generation AI models.
IREN raised its AI Cloud guidance above $4 billion
One of the most notable moves in the market was IREN (IREN) shares, which rose at least 16%. IREN Limited is a vertically integrated provider of cloud services for artificial intelligence that builds and operates large data centers and provides computing capacity for training and running AI models.
The company raised its annual target for normalized revenue in the AI Cloud segment from $3.7 billion to more than $4 billion. About 85% of the new figure is already secured by multi-year contracts with leading AI developers totaling $2.8 billion. IREN’s customers include Microsoft, Nvidia, Perplexity, Figure AI, Together AI, Fluidstack, Fireworks AI, Fal AI and Hume AI.
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