Nebius Group N.V. (NBIS) shares are climbing in extended trading Wednesday after Situational Awareness, the hedge fund run by former OpenAI researcher Leopold Aschenbrenner, reported a 5.6% stake in the neocloud company.
After the market close, Situational Awareness disclosed beneficial ownership of approximately 12.41 million shares of Nebius Group, representing that 5.6% stake. Aschenbrenner gained prominence after publishing a 165-page AI manifesto that went viral, correctly identifying several AI bottlenecks years in advance. He then launched Situational Awareness, which has ballooned from $225 million to $13.7 billion in assets under management in under two years. With some of his top holdings returning between 100% and 800%, Aschenbrenner has become one of the most closely watched names in AI investing.
NBIS Price Action: Nebius shares were up 11.47% in after-hours trading, changing hands at $232.48 at the time of publication, according to market data.
