AI Hedge Fund Situational Awareness Sells Public Portfolio but Retains Anthropic Shares

Washington DC, United States Jul 31, 2026 ALN: Situational Awareness, a hedge fund formed by former OpenAI researcher Leopold Aschenbrenner, has sold the majority of its public stock portfolio to Ken Griffin’s Citadel following steep losses over the past month, The Wall Street Journal reported earlier on Thursday. It’s a big comedown for the rising star who has been described as both “scarily smart,” and “brash.”

Founded in 2024, Situational Awareness was positioned at the forefront of the intersection between artificial intelligence (AI) and finance. Aschenbrenner, who is only 25 years old, had no prior trading experience before launching the fund. His rapid ascent in the financial world can be attributed to his deep understanding of AI infrastructure and its implications on various sectors. He gained prominence for his investment thesis after publishing essays arguing that scaling AI would require a major build-up in semiconductors, compute, memory, and energy infrastructure. This foundational idea resonated with many investors who were eager to capitalize on the AI boom.

Aschenbrenner’s early career included a significant role at OpenAI, where he joined the “superalignment” team in 2023. This team was tasked with ensuring that advanced AI systems would be aligned with human values and intentions, a critical area of research given the rapid advancements in AI technology. His academic background is equally impressive; he graduated as valedictorian from Columbia University at the age of 19, having enrolled at the institution at just 15 years old. However, his tenure at OpenAI was cut short when he was dismissed a year later due to what the company described as an improper disclosure of internal information, a move that sparked discussions about ethics and transparency in AI research.

The trajectory of Situational Awareness seemed promising until recently. The fund had reportedly returned an astounding 439% for the year through June, which drew significant attention and investments. At its peak, the fund's assets under management soared to an impressive $45 billion. However, this success was short-lived as the fund's positions began to decline sharply amid a broader downturn in AI infrastructure investments. Various factors contributed to this decline, including increasing scrutiny from public investors regarding the sustainability of high capital expenditures in the AI sector that were not translating into immediate revenue.

In a letter to investors dated July 24, Aschenbrenner characterized the selloff as one of the best buying opportunities since early last year, urging clients to commit fresh capital starting August 1. However, reports indicated that the appeal did not yield the expected commitments from investors, highlighting the challenges hedge funds face in maintaining investor confidence during downturns.

Some of the hardest-hit stocks held by Situational Awareness included memory chip producers SK Hynix and Sandisk, clean energy developer Bloom Energy, and neocloud provider Nebius Group. Each of these stocks has experienced declines of more than 30% over the past month, reflecting a broader trend in the market as investors reassess their positions in AI-related equities. The losses incurred by the fund were further exacerbated by the use of leverage, a common hedge fund strategy where borrowed funds are used to amplify potential returns. However, this tactic can also magnify losses, particularly in volatile market conditions.

Following Citadel's acquisition of the bulk of Situational Awareness' holdings, the overall assets of the hedge fund fell to approximately $10 billion, a stark decrease from around $20 billion in recent months. This decline underscores the volatility and unpredictability that can characterize hedge fund investments, especially in emerging sectors like AI.

Situational Awareness initially raised several hundred million dollars at its inception, attracting early backers from various sectors, including the quant-trading firm Jane Street, Stripe co-founders Patrick and John Collison, and Meta executives Daniel Gross and Nat Friedman. The diverse backing reflects the confidence many investors had in Aschenbrenner's vision and expertise, particularly in a rapidly evolving technological landscape.

Citadel's purchase of the fund's public holdings aligns with its established strategy of acquiring attractive assets during periods when leveraged players are forced to unwind their positions. This tactic has become a hallmark of Ken Griffin's hedge fund, which is known for its ability to capitalize on market dislocations. Citadel's existing portfolio already included several AI infrastructure investments, suggesting that Griffin shares Aschenbrenner's optimistic outlook on the sector's potential for recovery.

Despite the sell-off of its public holdings, Situational Awareness has retained its investments in private companies. Notably, the fund continues to hold a stake in Anthropic, which is currently valued at around $5 billion. Anthropic, a key player in the AI landscape, was last valued at $965 billion during a Series H funding round in May. The expectation of an upcoming public offering, potentially as soon as October, could further enhance the value of this investment. If successful, this could provide a significant windfall for Situational Awareness, potentially offsetting some of the losses incurred in the public markets.

In addition to Anthropic, Situational Awareness has invested in other private ventures, including chipmaker MatX and AI data center startup Fluidstack. Fluidstack was reportedly in discussions as of April to raise a new funding round at an $18 billion valuation, indicating that there is still potential for growth within the private sector of the AI and technology markets.

The unfolding situation at Situational Awareness raises important questions about the future of hedge funds operating in high-stakes sectors like AI. The volatility experienced in the market highlights the risks associated with aggressive investment strategies, particularly in industries characterized by rapid technological advancements and shifting investor sentiment. Aschenbrenner's next steps will be closely watched by both investors and industry observers, as he navigates the challenges of maintaining investor confidence and positioning the fund for future success.

As the landscape for AI investments continues to evolve, the implications of Situational Awareness' recent decisions will likely resonate throughout the financial and technological sectors. The interplay between public and private investments, along with the broader economic conditions affecting the tech industry, will be critical factors to monitor in the coming months. The ability of hedge funds like Situational Awareness to adapt to these changes will ultimately determine their long-term viability and success in an increasingly competitive environment.

As of now, inquiries have been made to Aschenbrenner for comments regarding the fund's recent activities and future strategies, but responses have yet to be received. The unfolding dynamics of Situational Awareness serve as a microcosm of the broader challenges and opportunities present in the investment landscape shaped by AI and emerging technologies.