Global Markets Are Selling Off — Here's How Investors Are Responding, and What Comes Next

 Meta description: Citadel's Ken Griffin revealed his firm has unwound more than 80% of the risk from the massive Situational Awareness portfolio it acquired, using over 100 block trades worth more than $4 billion. Here's the inside story.

a hedge fund trading floor

Remember Situational Awareness, the AI-focused fund we wrote about weeks ago after it got caught wrong-footed on both sides of its book — long the SK Hynix positions that sold off hardest, short an Adobe trade that rallied against it? We now have the other half of that story, and it's genuinely worth telling.

In a letter obtained by CNBC's Sara Eisen, Citadel founder Ken Griffin laid out exactly how his firm handled the aftermath. Short version: it wasn't pretty, but it was handled with a level of coordination that's rare to see documented this clearly.

The numbers behind the cleanup

Griffin told clients that Citadel has now unwound more than 80% of the aggregate risk from the portfolio it acquired from Situational Awareness — accomplished through more than 100 separate block trades totaling over $4 billion in market value. That's not a single transaction. That's a methodical, weeks-long process of quietly working enormous positions out of the market without triggering the kind of chaotic price action a sloppier unwind could have caused.

How this actually came together

According to Griffin's letter, Citadel entered discussions to acquire some of the fund's holdings on July 29. The very next day, CNBC's David Faber reported that Situational Awareness had been forced to sell all of its public stock positions after facing steep losses. Citadel was later confirmed as the buyer.

a simple diagram showing the July 29-30 sequence — Citadel discussions, then the forced sale reported

What strikes me about this sequence is how fast it moved. One day, quiet conversations begin. The next day, the forced-sale story breaks publicly. That's the kind of turnaround that only happens when a fund is under genuine, immediate pressure — and it's a reminder of just how quickly a concentrated, leveraged book can go from "conviction position" to "must sell now" when the market moves against it hard enough.

Why the block-trade approach mattered so much here

Griffin specifically thanked the trading and prime brokerage teams involved, writing that "a transaction of this magnitude could not have been completed without the extraordinary cooperation" of the banks serving both firms. That's not just a courtesy line. Unwinding over $4 billion in concentrated positions without a coordinated approach across multiple prime brokers could easily have amplified the very volatility that caused the problem in the first place — dumping large blocks into a thin market tends to move prices against the seller, fast.

What this episode actually tells us

I keep coming back to this story because it's such a clean illustration of something that gets lost in the day-to-day earnings chatter: even sophisticated, well-capitalized funds can get run over when they're positioned wrong on both the long and short side of a single theme. Situational Awareness had genuine conviction in AI infrastructure. It just happened to be positioned in the specific names that moved the wrong way, at the worst possible moment.

What I'd watch going forward

Whether Citadel's remaining 20% of unwound risk gets closed out without further market disruption is worth tracking, though it's largely a technical question at this point. More interesting to me: whether other AI-focused funds built around similarly concentrated long/short theses are quietly facing the same pressure right now, just without the public reporting that made this particular episode visible.

a stock ticker graphic showing block trade volume

Either way, this is a useful case study in how a well-run trading operation manages a genuinely messy situation without making it worse — and a reminder that "the market" absorbing a forced sale isn't automatic. Someone has to actually do the work.

This post is based on reporting from CNBC as of August 22, 2026. This content is for informational purposes only and does not constitute investment advice.