On Monday, Iren (IREN) stock soared 9.34%, closing at $50.33, with a trading volume of 52 million shares, far above the three-month average. This data center operator was originally a Bitcoin miner, but is now attracting investor attention due to its transformation into high-performance artificial intelligence computing, most notably its nearly $10 billion cloud service contract with Microsoft. Bernstein recently listed Iren as a top pick in the AI sector for 2026. Driven by the overall market rally, peers like Marathon Digital and Riot Platforms also saw their stock prices rise by 4.21% and 7.38%, respectively.