Published: August 15, 2026 | Category: Hedge Funds
Ken Griffin’s Citadel is closing out July with its strongest month in four years, and the reason has a name: Situational Awareness.
Citadel’s flagship Wellington multi-strategy fund gained 5.9% in July, its best month since 2022 and its biggest single-month jump this year, after the firm bought roughly $16 billion of distressed AI stocks from Leopold Aschenbrenner’s collapsing hedge fund at an estimated 10% discount. The fund had been up just 0.45% for the month with a week left to go.
The mechanics were brutal for the seller and simple for the buyer. Situational Awareness, the AI-focused fund Aschenbrenner launched in late 2024, had run roughly four times leverage on a concentrated book of AI infrastructure names including SK Hynix, CoreWeave and Nebius. When those positions fell 35% to 47% during July’s AI-stock selloff, the fund’s three prime brokers, Goldman Sachs, JPMorgan Chase and Bank of America, issued margin calls it could not meet. On July 29, Citadel stepped in and bought the bulk of the public book in a single overnight transaction rather than let it hit the open market piecemeal.
Citadel’s other funds moved just as fast. Its tactical trading fund gained 11.1% in July, bringing its 2026 return to 27%. Its equities fund advanced 14.2% for the month, also a record, taking its year-to-date gain to 27%. All three marked their best months of the year on the back of a single trade.
The stocks Citadel picked up have rallied hard since the deal closed. CoreWeave is up 47% from its post-selloff low, SK Hynix 19% and SanDisk 33%, tracking the broader relief rally in AI-adjacent names after Amazon, Alphabet, Meta and Microsoft each reaffirmed heavy AI capital spending plans for 2026 and beyond.
Situational Awareness is not shutting down. The fund retains a roughly $5 billion stake in Anthropic, acquired in a February 2025 round that valued the AI lab at about $60 billion. Because a private stake cannot be marked to market daily, it could not be margin-called the way the public book was, and the firm continues to operate as a private investment vehicle built around that position.
Citadel has run this playbook before. The firm, with $65.9 billion in assets under management and $39.6 billion in net trading revenue in 2025, more than Goldman Sachs, bought the distressed energy book of Amaranth Advisors alongside JPMorgan in 2006 and picked up Sowood Capital Management’s portfolio in 2007. In both cases, Citadel’s entry marked close to the bottom for the affected trade.
Whether that pattern holds this time is an open question. Barclays head of U.S. equity strategy Venu Krishna has flagged financing costs, corporate capital spending and big tech free cash flow as the variables that will determine if July’s rebound holds. None of those resolve simply because one distressed seller found a buyer.