Nebius Shares Fall Post Q3 Earnings: Should Investors Hold or Sell?

Core Insights - Nebius Group N.V. (NBIS) experienced a significant decline in share price following its third-quarter 2025 results, with shares down 20.4% since the earnings report on November 7, 2025 [1][8] - The company's stock has dropped approximately 30% over the past month, underperforming the Zacks Internet Software Services industry's decline of 8.8% [2] Financial Performance - In Q3 2025, Nebius reported an adjusted net loss of $100.4 million, which is 153% wider than the loss of $39.7 million from the previous year [4] - Revenues surged 355% year over year to $146.1 million, with the core infrastructure segment growing 400% [4] - Adjusted EBITDA loss was $5.2 million, an improvement from the $45.9 million loss in the prior-year quarter [5] - Total operating costs increased by 145% to $276.3 million, with a net loss from operations of $119.6 million compared to a loss of $43.6 million a year ago [5] Operational Challenges - Nebius faces macroeconomic uncertainties, rising expenses, and heavy capital spending, with capital expenditure guidance raised from approximately $2 billion to around $5 billion for 2025 [6][8] - Structural operational challenges include difficulties in securing sufficient power and ongoing supply-chain constraints, which limit the company's ability to serve customers effectively [9] - The company has tightened its full-year revenue outlook to a range of $500 million to $550 million, down from previous guidance of $450 million to $630 million [10] Competitive Landscape - Nebius is competing with major players like Microsoft, Amazon, and CoreWeave, which are rapidly expanding their AI infrastructure [11][12][13] - The company is consistently "sold out" of capacity, risking lost business and delayed onboarding until new capacity comes online in late 2025 and 2026 [9] Long-Term Growth Potential - Despite near-term challenges, Nebius is committed to strengthening its core AI cloud business, with significant multi-billion-dollar agreements with Microsoft and Meta expected to contribute to revenue starting late in the current quarter [19] - The company plans to scale its data centers in various regions and aims for 2.5 GW of contracted power by 2026 [20] - Nebius is also enhancing its enterprise portfolio with new offerings, targeting an annual run-rate revenue of $900 million to $1.1 billion by the end of 2025 [21]