By Titik Puspa 
Situational Awareness, the ambitious hedge fund launched by former OpenAI researcher Leopold Aschenbrenner, has offloaded the majority of its public stock portfolio to Ken Griffin’s financial behemoth, Citadel. This significant divestment follows a tumultuous period marked by substantial losses over the past month, a stark reversal for a fund that had rapidly ascended to prominence. The news, first reported by The Wall Street Journal, signals a considerable comedown for Aschenbrenner, a figure who has been simultaneously lauded as "scarily smart" and characterized as "brash" in industry circles.
Aschenbrenner, a 25-year-old German native, embarked on his hedge fund journey in 2024 with no prior formal trading experience. His investment thesis, however, was rooted in a sophisticated understanding of the burgeoning artificial intelligence landscape. He gained significant traction by publishing influential essays that posited a critical dependency of AI scaling on a massive build-out of essential infrastructure, including semiconductors, compute power, memory, and energy. This prescient vision resonated with investors, attracting substantial capital and establishing Situational Awareness as a formidable new player in the financial markets.
His academic and professional trajectory prior to launching the fund was nothing short of meteoric. In 2023, he joined OpenAI’s highly scrutinized "superalignment" team, a group dedicated to ensuring that advanced AI systems remain aligned with human values. This came just two years after his graduation as valedictorian from Columbia University at the remarkably young age of 19, having enrolled at the prestigious institution at just 15. His tenure at OpenAI, however, was cut short. He was dismissed a year later over allegations of improper disclosure of internal information. The "superalignment" team at the time was helmed by OpenAI co-founder Ilya Sutskever and AI researcher Jan Leike. Following Aschenbrenner’s departure and the subsequent departures of Sutskever (who went on to launch his own AI venture) and Leike (who joined rival Anthropic), Aschenbrenner swiftly pivoted to establish his own hedge fund.
For much of 2024, Situational Awareness experienced an extraordinary period of success. The Financial Times reported that the fund had delivered a staggering 439% return for the year up to June. During its peak, assets under management reportedly swelled to an impressive $45 billion, according to CNBC. This rapid growth was fueled by investor confidence in Aschenbrenner’s AI infrastructure thesis and the fund’s impressive early performance. However, the tide began to turn as the fund’s positions started to experience a sharp decline, coinciding with a broader market correction in AI infrastructure investments.
Despite the mounting losses, Aschenbrenner initially remained resolute. In a letter to investors dated July 24, which was seen by the Financial Times, he characterized the market sell-off as one of the most opportune buying moments since early the previous year. He actively encouraged clients to commit fresh capital, with a proposed start date of August 1 for new investments. However, Bloomberg reported that this appeal did not generate the anticipated level of investor commitments, indicating a growing concern among clients about the fund’s performance and future prospects.
The specific public equities that bore the brunt of the losses for Situational Awareness included prominent players in the AI infrastructure ecosystem. Memory chip producers such as SK Hynix and Sandisk, clean energy developer Bloom Energy, and neocloud provider Nebius Group all experienced significant downturns, plummeting by more than 30% over the past month. The broader decline in AI infrastructure equities stemmed from growing investor apprehension that the massive capital expenditures being poured into the sector were not translating into immediate or near-term revenue growth. Adding to the volatility, Situational Awareness’s losses were amplified by its use of leverage, a common hedge fund strategy that involves borrowing money to increase investment positions, thereby magnifying both potential gains and losses.
The sale of the majority of its public stock portfolio to Citadel represents a significant deleveraging event for Situational Awareness. Following this transaction, the fund’s overall assets have reportedly fallen to approximately $10 billion, according to Bloomberg. This marks a substantial decrease from its recent peak of around $20 billion, as previously reported by The Wall Street Journal. The influx of capital from Citadel, a firm known for its aggressive trading strategies and its ability to absorb large blocks of stock, provides liquidity for Situational Awareness and reduces its exposure to volatile public markets.
Situational Awareness had initially raised several hundred million dollars at its inception, attracting a high-caliber roster of early backers. These included prominent firms and individuals such as the quantitative trading firm Jane Street, Stripe co-founders Patrick and John Collison, and influential Meta executives Daniel Gross and Nat Friedman. The fund’s initial success and the caliber of its investors underscored the high expectations surrounding Aschenbrenner and his AI-centric investment strategy.
Citadel’s acquisition of a substantial portion of Situational Awareness’s public holdings aligns with its established market reputation. Ken Griffin’s hedge fund has a history of strategically acquiring attractive assets from leveraged players who are forced to unwind their positions during periods of market stress. Even prior to this transaction, Citadel’s own portfolio demonstrated a significant allocation to AI infrastructure bets, mirroring some of the investments held by Situational Awareness. This suggests that, much like Aschenbrenner, Griffin maintains a long-term conviction in the AI sector and possesses the financial fortitude to weather potential downturns and wait for a market recovery.
Crucially, Situational Awareness did not liquidate its investments in private companies. Among its most valuable private holdings is a substantial stake in Anthropic, a leading AI safety and research company. According to Bloomberg, this stake is currently valued at $5 billion. This position is widely considered an appreciating asset, particularly as Anthropic has seen its valuation soar. The company was most recently valued at $965 billion during its Series H funding round in May, and speculation is rife about an imminent initial public offering (IPO) as early as October, potentially at an even higher valuation. The substantial potential upside from a future Anthropic IPO could significantly offset some of the hedge fund’s recent public market losses.
Beyond its significant stake in Anthropic, Situational Awareness’s private portfolio also includes investments in other promising technology companies. Notably, it holds shares in chipmaker MatX, which is positioned as a potential challenger to Nvidia in the AI semiconductor market. Additionally, the fund has invested in Fluidstack, an AI data center startup that was reportedly in discussions in April to raise a new funding round at an $18 billion valuation, a significant jump from its previous valuation of $7.5 billion just months earlier. These private holdings represent a significant portion of Situational Awareness’s remaining assets and offer a potential avenue for future returns, contingent on the continued growth and successful exits of these companies.
TechCrunch has reached out to Leopold Aschenbrenner for comment on these developments. The strategic divestment to Citadel, while signaling a difficult period for the fund’s public equity performance, also highlights the resilience of its private investments and the broader long-term potential of the AI sector. The coming months will be critical in observing how Situational Awareness navigates its path forward, leveraging its remaining assets and the insights gained from its recent market experience. The narrative of Aschenbrenner and Situational Awareness serves as a compelling case study in the high-stakes, high-reward world of technology-focused hedge funds, demonstrating both the immense potential for rapid growth and the significant risks inherent in highly speculative markets. The involvement of established financial players like Citadel underscores the ongoing consolidation and strategic repositioning occurring within the investment landscape as the AI revolution continues to unfold.
