NEW YORK, December 29, 2025, 14:07 ET — Regular session
- Nebius Group shares fell about 1.6% in afternoon trading after a filing showed CEO Arkady Volozh plans to sell 41,000 shares. 1
- The move came as heavyweight tech and AI-linked stocks pulled back to start the final week of 2025. 2
- The proposed sale was described as a “sell to cover” transaction, with trades expected around year-end. 1
Nebius Group N.V. shares fell on Monday after a filing showed founder and CEO Arkady Volozh intends to sell a small portion of his stake.
The timing matters because NBIS has become a high-volatility proxy for investor appetite for AI data-center capacity, and year-end trading can amplify price swings. Google Finance data shows the stock has ranged from about $18 to $141 over the past 52 weeks, with a market value around $21.7 billion. 3
The broader AI trade also cooled. Wall Street’s main indexes opened the final trading week of 2025 on a softer note as heavyweight technology shares retreated, including Nvidia, Broadcom, Palantir and Tesla, Reuters reported. 2
Nebius shares were down 1.6% at $86.18 in early afternoon trading, after touching an intraday low of $84.25 and a high of $88.55, with about 5.4 million shares traded, according to market data.
In a Form 144 notice, Volozh said he plans to sell 41,000 Class A shares through Citigroup Global Markets, valuing the proposed sale at about $3.6 million. In remarks attached to the filing, he wrote: “Shares being sold are pursuant to sell to cover transaction,” and said sales would take place on Dec. 31 and Jan. 2. 1
A Form 144 is filed when an insider plans to sell shares under SEC Rule 144, which governs resale of stock held by company affiliates. The SEC archive for the filing lists Volozh as the person for whose account the securities are to be sold. 4
The notice does not guarantee a sale will occur, but it can signal additional supply coming into the market — a sensitivity point for stocks that have drawn heavy momentum trading.
Traders will be watching whether the shares hold above Monday’s session low near $84 as the proposed selling window begins, and whether volumes rise into the New Year holiday period.
Nebius, an Amsterdam-based AI cloud and infrastructure provider, has signed large, multi-year agreements with hyperscalers to supply GPU-heavy computing capacity — including a $3 billion, five-year deal with Meta after a larger Microsoft contract, Reuters has reported. 5
That backdrop has left the stock tied closely to the “AI infrastructure” theme, where investors have weighed rapid growth against the heavy capital spending required to add data-center power and advanced chips.
For now, the next catalysts are likely to be further disclosures around insider sales and broader shifts in the AI-linked mega-cap trade, rather than a fresh company announcement.
