Nebius Group shares rose 10% to $229.67 after the neocloud operator told customers that higher on-demand rental rates for a range of AI graphics processing unit (GPU) capacity would take effect October 1. The disclosure was treated as a direct signal of pricing power in scarce AI compute and lifted IREN Limited 6% to $45.20, even though IREN issued no comparable rate notice. CoreWeave fell 2% to $82.10 in one market reading and 1.5% to $82.10 in another, underscoring that investors are repricing operators individually rather than the neocloud sector uniformly. The Global X Data Center & Digital Infrastructure ETF rose 1% to $27.60, trailing the Invesco QQQ Trust, which gained 1.62% to $716.12. The market is watching for another operator to confirm or challenge Nebius’s pricing signal and for evidence that IREN’s advance can hold.