Nebius Group (NBIS) shares soared 8.94% in after-hours trading on Tuesday, extending a rally driven by a powerful combination of institutional endorsement and surging optimism across the AI infrastructure sector.
The advance was fueled by the disclosure that private equity giant Carlyle Group initiated a new position in Nebius during the second quarter, marking the stock as one of only three new additions to the firm's portfolio. This clear signal of institutional confidence was amplified by CoreWeave's blockbuster quarterly report, which showed revenue doubling and a $104 billion sales backlog, sparking a broader rally in AI infrastructure names. A robust earnings preview for Nebius also added to the bullish sentiment, with consensus estimates projecting a 374.21% year-over-year revenue surge when the company reports its second-quarter results on Wednesday, following a prior quarter that delivered a 621.55% revenue jump.