Shares of Nebius Group N.V. (NASDAQ: NBIS), a rising star in the AI infrastructure sector, staged a dramatic comeback on Thursday, July 30, 2026, notching their biggest single-day gain of the year and sparking a fresh wave of optimism among traders. The stock soared by nearly 30% in morning trade, according to coverage from Benzinga, and was up as much as 26.85% by midday, per Timothy Sykes News, before closing around $188. The catalyst? A potent blend of upbeat earnings from Microsoft, a sector-wide rebound in AI stocks, and a headline-grabbing multi-year contract with Reflection AI valued at over $1 billion.
But for those following NBIS closely, Thursday’s rally was just the latest twist in what’s been a wild, meme-fueled ride. Over the past month, the stock has swung from mid-$150s to highs above $220, only to tumble back toward $148 before bouncing again. As StocksToTrade News pointed out, these kinds of double-digit swings and sharp premarket gaps have become business as usual for Nebius, whose shares are increasingly traded like a high-octane momentum play rather than a sleepy data-center REIT.
The rebound in Nebius shares came amid a broader resurgence in AI-related stocks, driven by Microsoft’s robust earnings report that lifted the entire sector’s mood. Other notable gainers included Bloom Energy (BE), which jumped more than 27% and was on track for its best day since April, as well as Sandisk (SNDK), Applied Digital (APLD), CoreWeave (CRWV), Advanced Micro Devices (AMD), and Micron Technology (MU), all of which posted double-digit gains. As Benzinga reported, retail sentiment around these names turned “extremely bullish,” with social media chatter reaching fever pitch.
Despite the day’s exuberance, the context for Nebius remains complex. Even after Thursday’s rally, NBIS shares were still down more than 30% for July, reflecting the broader sell-off that has hit AI and semiconductor stocks this summer. The rollercoaster price action has been amplified by WallStreetBets-style trading, with surges of 10% to 18% often followed by rapid profit-taking dips. “Nebius Group N.V. has traded like a meme-driven AI momentum name,” Timothy Sykes News observed, “with double-digit percentage swings tied to WallStreetBets attention and fast profit-taking.”
So what’s fueling all the excitement—and volatility? For starters, Nebius has been busy announcing developments aimed at cementing its place as a next-generation “neocloud” provider. In July, the company rolled out AI Cloud 3.6, featuring Nebius Echo, a natural-language AI agent designed to help users manage its cloud platform. More significantly, on July 14, Nebius inked a deal to sell computing power to Reflection AI in a contract worth more than $1 billion through 2029, a move that gives the company coveted multi-year revenue visibility in a sector often criticized for hype over substance.
“Nebius Group signed a deal to sell computing power to Reflection AI worth more than $1B, running through 2029. That’s multi-year visibility in a space where a lot of names are still selling dreams,” Timothy Sykes News reported. The market responded with enthusiasm, pushing NBIS up more than 4% in premarket trading on the news.
To support its ambitious growth plans, Nebius also secured a $775 million debt facility backed by its GPU assets, providing crucial funding for AI infrastructure expansion without diluting existing shareholders. As Benzinga noted, this asset-light, partnership-based expansion model is designed to help Nebius scale quickly while managing risk.
Yet the path forward is anything but straightforward. The fundamentals show a company with roughly $529.8 million in revenue and an enterprise value near $37.65 billion, yielding an eye-popping price-to-sales ratio above 3,000. Pretax margins are negative, and returns on assets and equity remain below zero, underscoring that Nebius is still very much in investment mode. Leverage is meaningful, with a 2.7x ratio, but the company’s cash reserves of $3.68 billion and working capital over $3.18 billion offer a cushion as it chases AI growth.
Regulatory risks are also looming large. In July, New York imposed a one-year moratorium on new hyperscale data centers, a move that adds uncertainty for Nebius but could also redirect growth to more welcoming regions. “New York’s one-year hyperscale moratorium adds regulatory noise for Nebius but also signals intense AI data center demand that may move to friendlier regions,” Timothy Sykes News explained. The company’s status as a “neocloud” operator—alongside peers like CoreWeave—positions it to benefit as AI and data center spending migrates away from restrictive states and toward more supportive jurisdictions.
Competition remains fierce. Reports that Meta would sell excess AI compute triggered a sharp 12%–15% selloff in neocloud stocks, including Nebius and CoreWeave, earlier in July. While some analysts considered the reaction overdone, the episode was a reminder that hyperscale giants can disrupt the space at any moment, keeping traders and investors on their toes.
Amid all the volatility, experts urge discipline. As Tim Sykes, a well-known penny stock trader, put it: “Trade like a sniper, not a machine gun—wait for the best setups, strike fast, and cut losses even faster.” StocksToTrade’s Tim Bohen echoed the sentiment: “The best trades are the ones you can make without emotion. Plan it, then execute it as if it’s routine.”
For Nebius, the next two years will be crucial. The company’s story now hinges on whether it can add enough data center supply to justify its lofty valuation and fulfill the promise of its big-ticket contracts. As Timothy Sykes News summarized, “NBIS is tagged with a Hold stance, with the story hinging on whether Nebius can add enough capacity over the next two years.”
Ultimately, Nebius Group N.V. sits at the intersection of real AI infrastructure demand and speculative trading fervor. With billions in cash, a landmark $1B-plus contract, and a seat at the table as AI reshapes the data center landscape, the company has the ingredients for both opportunity and risk. For active traders and long-term investors alike, the coming months promise plenty of action as Nebius seeks to turn volatility into lasting value.