Why Did Nebius Stock Rocket Higher Today?

Source The Motley Fool

Key Points

  • A renowned artificial intelligence investor revealed a large stake in Nebius.

  • Nebius recently announced a partnership with Bloom Energy.

  • 10 stocks we like better than Nebius Group ›

Speculative juices continue to flow as Nebius Group (NASDAQ: NBIS) stock continues to soar. Shares of the cloud infrastructure provider have been riding the artificial intelligence (AI) wave, with the stock rocketing about 470% higher over the last year.

The rally continued today, with a major player in the AI sector revealing an ownership stake. That led Nebius stock to jump by nearly 12%. The stock pared those gains as the session neared a close, but remained up by 9.1% as of 3:55 p.m. ET.

Will AI create the world's first trillionaire? Our team just released a report on the one little-known company, called an "Indispensable Monopoly" providing the critical technology Nvidia and Intel both need. Continue »

Nebius logo in white set over dark grey shaded view of a Nebius data center.

Image source: The Motley Fool.

Nebius boosted guidance

Nebius' underlying business is growing quickly. In its quarterly report two weeks ago, the company raised its guidance for the data center power capacity under contract by the end of the year. Last week, it announced a partnership with Bloom Energy to deploy Bloom's fuel cell systems to help satisfy those power needs.

Speculative investors have been pouring into Nebius stock, expecting that growth will provide big returns on the company's capital investments. Nebius' cloud computing capacity has attracted some big tech customers, fueling speculation. But investors have to question the valuation at some point as the stock continues to soar.

Leopold Aschenbrenner backs Nebius

Word that widely followed AI investor Leopold Aschenbrenner's multi-billion-dollar AI hedge fund, Situational Awareness, holds over 12.4 million shares gave the stock another push today. Aschenbrenner has gained notoriety as a young AI researcher who left OpenAI to found a hedge fund named after the 2024 essay he wrote, arguing that Artificial General Intelligence (AGI) could arrive as early as 2027.

The fund's 5.6% stake in Nebius was enough for investors to follow Aschenbrenner's lead today. Nebius stock may be running too far, too fast, though. Its market cap has reached nearly $60 billion. While revenue is growing quickly, and management believes it could reach an annual run rate of up to $9 billion by the end of 2026, any speed bumps to that plan could hit Nebius shares hard.

Should you buy stock in Nebius Group right now?

Before you buy stock in Nebius Group, consider this:

The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and Nebius Group wasn’t one of them. The 10 stocks that made the cut could produce monster returns in the coming years.

Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you’d have $471,072!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you’d have $1,303,352!*

Now, it’s worth noting Stock Advisor’s total average return is 983% — a market-crushing outperformance compared to 210% for the S&P 500. Don't miss the latest top 10 list, available with Stock Advisor, and join an investing community built by individual investors for individual investors.

See the 10 stocks »

*Stock Advisor returns as of May 28, 2026.

Howard Smith has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Bloom Energy. The Motley Fool has a disclosure policy.

Disclaimer: For information purposes only. Past performance is not indicative of future results.
placeholder
Trump’s ‘Copper Tariffs’ June Countdown. US Copper Imports Surge, Will Copper Prices Hit New Highs?On May 27, Bloomberg reported that copper trading activity has intensified as market expectations of potential copper tariffs under a Trump administration heat up, prompting traders to sh
Author  TradingKey
13 hours ago
On May 27, Bloomberg reported that copper trading activity has intensified as market expectations of potential copper tariffs under a Trump administration heat up, prompting traders to sh
placeholder
Gold Falls Below $4,400 for First Time in Two Months. Institutions Lower Gold Price Forecasts as Market Expects PCE to Approach 4% During the Asian trading session on May 28, spot gold briefly fell below $4,400, hitting a low of $4,396.91, its lowest level since March 27. Gold futures also declined, with U.S. gold fu
Author  TradingKey
13 hours ago
During the Asian trading session on May 28, spot gold briefly fell below $4,400, hitting a low of $4,396.91, its lowest level since March 27. Gold futures also declined, with U.S. gold fu
placeholder
Bitcoin loses $73,000 as US-Iran escalation, ETF outflows deepen crypto market sell-offThe broader cryptocurrency market is down $2.45 trillion on Thursday, from $2.54 trillion the previous day, led by Bitcoin’s (BTC) decline below $73,000.
Author  FXStreet
13 hours ago
The broader cryptocurrency market is down $2.45 trillion on Thursday, from $2.54 trillion the previous day, led by Bitcoin’s (BTC) decline below $73,000.
placeholder
Iran-U.S. MOU Details Disclosed. Gold Drops to $4,400 Mark Hitting New Low Since March 30; Two Major Crude Oil Futures WeakenAccording to Iranian sources, a "preliminary informal document" regarding the framework of a memorandum of understanding between Iran and the United States has been disclosed, covering is
Author  TradingKey
20 hours ago
According to Iranian sources, a "preliminary informal document" regarding the framework of a memorandum of understanding between Iran and the United States has been disclosed, covering is
placeholder
Gold flatlines near $4,450 on US-Iran uncertainties, US PCE inflation data loomsGold price (XAU/USD) trades on a flat note around $4,455 during the early Asian session on Thursday. The precious metal steadies as US-Iran peace negotiations face uncertainties.
Author  FXStreet
20 hours ago
Gold price (XAU/USD) trades on a flat note around $4,455 during the early Asian session on Thursday. The precious metal steadies as US-Iran peace negotiations face uncertainties.
goTop
quote