Nebius: A 355% Rally Meets a 23% Weekly Plunge – The Meta Cloud Shock and What It Means for AI Infrastructure

Nebius shares drop 22.67% after reports Meta may shift from buyer to builder of AI cloud capacity, raising doubts about neocloud reliance on hyperscaler partners.

Nebius has been one of the most explosive stories in the AI infrastructure space, with the stock multiplying nearly fivefold over the past twelve months on a wave of hyperscaler demand, NVIDIA backing, and a backlog that has swelled to $50 billion. Yet in a stark reminder of how quickly sentiment can turn in a high-volatility name, the shares shed 22.67% in the span of seven days, dragging the price to €186.78. The trigger: concerns that its biggest customer, Meta Platforms, might be shifting from buyer to builder.

The jolt originated in reports that Meta is exploring its own cloud compute expansion. Nebius had inked a multi-billion-dollar, long-term supply agreement with the social media giant in March, anchored by early deployments of NVIDIA’s Vera Rubin platform. That deal cast Nebius as an indispensable supplier to the AI boom. The prospect of Meta developing parallel capacity — effectively competing with the very partners it relies on — undercuts the scarcity premium that has propped up Nebius’s valuation and sent a shockwave through the stock.

Zooming out, the damage looks more contained than the weekly numbers suggest. On a 30-day basis, Nebius is down just 1.21%. But the concentrated nature of the selloff reveals how fragile the narrative can be when a single customer relationship accounts for such a large slice of the growth story. The stock now sits 28.44% below its 52-week high of €261, hit on June 22, and has slipped below its 50-day moving average of €191.69 — now trading 2.56% beneath that line. Still, at €186.78, it remains a remarkable 60.63% above its 200-day average of €116.28, underscoring how far the shares have run even after the pullback.

The technical picture offers no clear signal. The relative strength index stands at 42.8, a neutral reading that leaves room for further downside before oversold territory is reached. The 30-day annualized volatility of 103.69% confirms what any chart watcher already knows: this is a stock that punishes the faint-hearted and rewards only those with iron discipline.

The structural concern goes beyond a single headline. Nebius’s entire model rests on multi-year capacity contracts with hyperscalers — selling compute power before the infrastructure is even fully operational. If the largest of those partners starts building its own capacity rather than buying, the scarcity argument that justifies the company’s premium multiple becomes much harder to defend. This is not a Nebius-specific worry; it applies to every so-called neocloud that has tied its growth to a handful of hyperscaler relationships. The industry is now grappling with an uncomfortable question: are AI infrastructure providers differentiated partners, or simply fungible capacity that the hyperscalers will eventually absorb once they have learned enough?

Nebius does not lack for firepower elsewhere. NVIDIA has invested $2 billion directly in the company, securing it preferential access to the chipmaker’s most powerful silicon — from the current Hopper and H200 to the upcoming Blackwell generation. That relationship is central to a buildout plan that targets over five gigawatts of total capacity by 2030, with multiple “AI factory” sites across the United States coming online by the end of 2026. The order book, approaching the $50 billion mark, is buttressed by long-term commitments from both Meta and Microsoft, providing a demand anchor that few rivals can match.

With a market capitalization of roughly €47.97 billion, Nebius is no longer a niche player. The valuation reflects both the immense opportunity in AI infrastructure and the execution risk of scaling at breakneck speed. For the months ahead, the critical question is whether the backlog continues to grow even as new competitive threats — like Meta’s internal compute plans — chip away at the narrative that once seemed bulletproof. The past week has offered a useful correction to the assumption that AI infrastructure demand is a frictionless one-way bet. For a stock that has swung from a 52-week low of €38 to its June high and back, the next few weeks will reveal whether the Meta scare is just a passing tremor or the first hairline crack in a thesis that until recently appeared unassailable.