Nebius Stock Rises After Former OpenAI Employee’s Fund Discloses Major Stake
Nebius Group saw its shares rally in premarket trading after Situational Awareness, a fund managed by former OpenAI staffer Leopold Aschenbrenner, reported a 5.6% stake valued at nearly $2.6 billion as of Wednesday. The fund, which managed $13.67 billion as of March 31 and grew 148% from the end of 2025, is now Nebius’ largest shareholder. The move…