IREN Limited (NASDAQ: IREN) and Cipher Mining Inc. (NASDAQ:CIFR), Bitcoin miners pivoting to AI infrastructure providers, are making some hefty business moves today, and their stocks have been reflecting it.

IREN signed a five-year, $9.7 billion agreement with Microsoft for GPU cloud computing services. The deal gives Microsoft access to NVIDIA GB300 GPUs managed by IREN at its Childress, Texas campus, with a phased deployment of GPU capacity throughout 2026. 

The contract includes a 20% prepayment and positions IREN as a key hyperscaler partner for the first time. 

Four new liquid-cooled data centers, Horizon 1 through Horizon 4, will support 200 megawatts of critical IT…

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