Leopold Aschenbrenner just wrote a $400 million check to a private company backed by Sequoia Capital. Sequoia partner Alfred Lin confirmed the investment on August 6. The identity of the recipient company remains undisclosed, though the deal lands squarely in the AI startup ecosystem.
From $45 billion to $10 billion in a month
Aschenbrenner’s hedge fund, Situational Awareness LP, just went through a significant decline. The fund’s assets under management peaked at roughly $45 billion in July 2026. By late in the month, that figure had cratered to approximately $10 billion. The fund lost about 78% of its asset base in a matter of weeks.
The culprit was a cocktail of heavy leverage, margin calls, and a sell-off in AI infrastructure stocks. The fund was forced to liquidate a majority of its public equity holdings just to stop the bleeding.
The $400 million investment represents a 4% concentration bet relative to the fund’s current size of $10 billion.
