Nebius Stock Up 254% in a Year: Should You Buy, Hold or Sell?

Nebius Group (NBIS) has climbed 253.5% over the past year, fueled by 454% revenue growth and four AI cloud infrastructure deals each exceeding $1 billion in value. The company raised its contracted power target to 5 gigawatts by year-end and projects capital expenditures of $20-25 billion for 2026 as it scales AI cloud capacity.

The rally reflects surging demand for AI infrastructure, with Nebius competing in a market dominated by larger players including NVDA and MSFT. CoreWeave (CRWV) operates in the same high-growth AI cloud services segment.

Despite the revenue acceleration and contracted backlog, Zacks Investment Research rates NBIS a Hold. The firm cites elevated capital requirements and capacity deployment timelines as near-term headwinds, suggesting the stock's 253.5% gain has priced in much of the upside. Zacks advises current shareholders to hold their positions while recommending prospective buyers wait for a pullback before initiating.