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Citadel founder Ken Griffin has disclosed that his firm eliminated more than 80% of the aggregate risk associated with the portfolio it purchased from Leopold Aschenbrenner’s Situational Awareness hedge fund. The revelation offered clients the first detailed account of Citadel’s role in absorbing and restructuring the troubled portfolio.

In a Friday letter obtained by CNBC, Griffin said Citadel conducted more than 100 block trades representing over $4 billion in market value. Those transactions allowed the investment giant to rapidly reduce its exposure after acquiring the assets during a turbulent period for artificial intelligence stocks.

Griffin said Citadel began discussions with Situational Awareness on July 29 regarding the purchase of certain fund holdings. The negotiations moved quickly as losses intensified and pressure mounted on the concentrated investment strategy.

One day after those discussions began, CNBC reported that Situational Awareness had been forced to liquidate all of its publicly traded stock positions following steep losses. Citadel was subsequently identified as the buyer that stepped in to acquire the assets.

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“A transaction of this magnitude could not have been completed without the extraordinary cooperation of the trading and prime brokerage teams at the banks serving both firms,” Griffin wrote in the Friday letter to clients. “I am grateful for the focused effort they brought to the rapid transfer of the portfolio.”

The speed and scale of the transfer reflected the urgency surrounding Situational Awareness and its leveraged bets. Once losses triggered margin calls, the fund had little room to wait for markets to recover or for its investment thesis to regain favor.

Citadel, by contrast, had the capital, trading infrastructure, and relationships needed to take control of the positions and manage their risks. Griffin’s letter indicates that the firm immediately began breaking apart the portfolio rather than simply holding the inherited exposures.

The transaction coincided with a strong month for Citadel’s flagship Wellington fund. Griffin confirmed that the multistrategy fund returned 5.94% in July, its best monthly performance since 2022 and a notable result during an unsettled stretch for technology shares.

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Situational Awareness had built concentrated positions around the belief that artificial intelligence would fundamentally transform the global economy. Aschenbrenner, who is 25 years old, became known for making an aggressive wager on companies expected to benefit from massive spending on computing power, energy, and related infrastructure.

The fund also held short positions in selected software companies that investors feared could be disrupted by increasingly capable artificial intelligence systems. That combination was intended to capture gains from emerging AI winners while profiting from businesses perceived as vulnerable to technological displacement.

Instead, the strategy was hit from both directions during June and July. Artificial intelligence related stocks in which the fund held major positions weakened sharply, even as broad market indexes gave the appearance of relative stability.

Sandisk and Bloom Energy, two significant holdings cited in connection with the portfolio, plunged more than 50%. Meanwhile, software companies including Adobe rebounded, inflicting additional pain on the fund’s short positions and deepening losses across both sides of the trade.

The resulting squeeze produced margin calls and compulsory selling, illustrating the danger of concentrated positions when leverage and market volatility collide. A compelling long term thesis can still collapse under immediate financing pressure if a fund cannot withstand adverse price movements.

The timing proved especially painful for Situational Awareness because the artificial intelligence trade recovered after Citadel purchased the publicly traded assets. In hindsight, the forced sale appears to have occurred near the bottom of the decline that began in June.

That reversal highlights one of Wall Street’s most unforgiving realities: distressed sellers often surrender assets at precisely the moment stronger buyers are prepared to step in. Citadel’s ability to move quickly gave it control over the portfolio while Situational Awareness faced demands that left little negotiating leverage.

Griffin’s disclosure shows that Citadel did not merely inherit a large speculative bet and hope for favorable markets. Through more than 100 sizable transactions, the firm systematically reduced risk while its flagship fund delivered one of its strongest monthly performances in years.

DISCLAIMER: GoldInvestors.news is not a registered investment, legal or tax advisor or broker/dealer. All investment/financial opinions expressed by GoldInvestors.news are from the personal research and experience of the owner of the site and are intended as educational material. Although best efforts are made to ensure that all information is accurate and up to date, occasionally unintended errors and misprints may occur.