Citadel Jumps 6% After Snapping Up Situational Awareness’ AI Book in a Fire Sale

Ken Griffin’s Citadel (Wellington flagship) — pounced on a rival’s collapse and turned it into a windfall, as the firm’s flagship Wellington fund surged 5.9% in July after buying billions of dollars of AI stocks in a fire sale from Leopold Aschenbrenner’s troubled hedge fund, Situational Awareness. The move capped a turbulent month and lifted the $71bn-plus manager’s 2026 gains to roughly 12%, according to people who have seen the numbers.

Key Points

• Citadel’s Wellington fund rose 5.9% in July and now sits up about 12% for 2026, according to people familiar with the figures.
• The gain followed Citadel’s rapid purchase of Situational Awareness’ public equity book, a deal that reportedly closed in under 24 hours.
• Citadel outbid [Jane Street] and Millennium, ultimately winning the auction at roughly a 10% discount.
• Situational Awareness had gained more than 400% in H1 2026 on leveraged AI bets before July’s sell-off forced it to unwind.
• Several of Aschenbrenner’s largest holdings — including Bloom Energy (BE) and Sandisk (SNDK) — rebounded after the sale; Sandisk has climbed nearly 30% since.
• Investors say Citadel’s purchase helped stem a broader market rout by absorbing Situational Awareness’ forced selling.

The Deal: Griffin Strikes Fast

Citadel moved decisively when opportunity appeared. As July’s AI sell-off battered leveraged funds, Griffin’s firm swooped in and bought the majority of Situational Awareness’ public equity positions in a quick-fire process that reportedly took less than 24 hours. Moreover, Citadel didn’t win uncontested — it beat out trading firm Jane Street and fellow multi-manager giant Millennium, ultimately sealing the deal at about a 10% discount, according to people familiar with the matter. Citadel declined to comment on the transaction or its returns, which Bloomberg first reported.

The Backdrop: An AI Rally That Turned

To understand the payoff, consider what came before it. AI-related equities rallied hard earlier in the year, and then July delivered a sharp reversal. South Korean chipmaker SK Hynix (SKHY) tumbled almost 50% from its June peak, and the tech-heavy Nasdaq 100 (^NDX) briefly slipped into correction territory just before the deal closed.

Situational Awareness became the most prominent casualty. The firm had posted gains of more than 400% in the first half of the year on highly leveraged AI bets — but the same leverage that fueled those returns turned against it, forcing a rapid sale of its book. Meanwhile, Citadel itself had struggled early in July; as of July 24, Wellington was roughly flat for the month, and stocks fell further in the three days before the acquisition.

The Payoff: Buying the Dip at Scale

The bet paid off almost immediately. Because Situational Awareness’ forced selling had been amplifying the sell-off, some investors argued that Citadel’s purchase actually helped stem a broader market rout. Sure enough, many of Aschenbrenner’s biggest positions rallied the day after the sale — Bloom Energy (BE) among them, while Sandisk (SNDK) has jumped nearly 30% since last Wednesday.

As one hedge fund manager who held similar positions put it: “These are names that trade really aggressively. They were highly volatile, but they were liquid. So Citadel made a killing.”

The Griffin Playbook: Charging Toward Trouble

Finally, this episode fits a familiar pattern. Griffin has long charged toward firms in distress rather than away from them. The day Enron filed for bankruptcy in 2001, for instance, he dispatched more than a dozen executives to Houston on a chartered Gulfstream to dissect the failure — and later poached several of the company’s top analysts. Two decades on, the instinct to move fast when others panic looks as sharp as ever.