When one of the hottest AI-focused hedge funds in the world loses 67% of its value in a single month, someone has to catch the falling knife. That someone was Citadel.

Ken Griffin’s firm acquired the majority of Situational Awareness’s leveraged public-stock portfolio, valued at up to $16 billion, in a deal that closed around July 30, 2026. The entire transaction took roughly 24 hours.

How Situational Awareness went from 439% returns to near-collapse

Situational Awareness was, until very recently, the kind of fund that made other hedge fund managers quietly furious. Through June 30, 2026, the AI-focused fund had posted a net return of 439%. Its assets peaked at approximately $45 billion.

Then July happened.

A brutal selloff in semiconductor and AI stocks hammered the fund’s concentrated positions. By the time the dust settled, Situational Awareness’s assets had cratered to around $10 billion, a roughly 67% drawdown in a single month.

When a fund that large starts liquidating in distress, the selling pressure alone can create a cascading crisis. By some estimates, without intervention, the forced selling could have triggered a deeper $3 trillion selloff in global semiconductor and AI stocks.

Citadel’s 24-hour rescue operation

Citadel’s acquisition was less about getting a bargain and more about being one of the few firms with the balance sheet and operational infrastructure to absorb $16 billion in positions on that kind of timeline.

The transaction reportedly stabilized the semiconductor and AI market by removing the threat of further forced liquidation. Citadel bought the positions at a discount before they could be dumped on the open market.

Citadel Securities’ separate crypto play

In an unrelated move, Citadel Securities made a $400 million strategic investment in Crypto.com at a $20 billion valuation. Citadel Securities is Griffin’s market-making arm, distinct from the hedge fund.

What this means for investors

The Situational Awareness blowup is a case study in concentration risk and leverage. A fund that returned 439% through June was essentially destroyed in July.

The fact that a single fund’s distressed liquidation could have sparked a $3 trillion drawdown across global semiconductor and AI stocks reveals just how interconnected and fragile these markets remain.

The Citadel Securities investment in Crypto.com at a $20 billion valuation suggests that major market makers are positioning for a future where crypto trading infrastructure is as essential as traditional equity plumbing.