Situational Awareness, the hedge fund founded by 24-year-old former artificial intelligence researcher Leopold Aschenbrenner has grown to more than $20bn in assets under management less than two years after launch, according to a report by the Wall Street Journal.
The report cites unnamed peopler familiar with the matter, as saying that the fund has delivered exceptional returns since inception, benefiting from a concentrated focus on companies positioned to capitalise on the accelerating adoption of AI technologies. The sources said Situational Awareness has generated gains exceeding 1,000% net of fees since launch and is up roughly 270% through the first five months of this year.
Among the firm’s largest and most profitable positions is its investment in AI developer Anthropic, which now represents approximately 20% of the portfolio, according to one of the sources.
The fund’s success has also attracted backing from sophisticated institutional investors, including quantitative trading powerhouse Jane Street. The investment is notable because Jane Street is generally selective about allocating capital to external managers.
Aschenbrenner entered asset management without a traditional investing background. He established Situational Awareness in late 2024 after building a reputation in technology circles through his research and commentary on the future trajectory of artificial intelligence.
His prominence grew significantly following publication of a lengthy essay titled Situational Awareness: The Decade Ahead, in which he outlined a framework for forecasting AI development by analysing expected improvements in computing power, algorithmic efficiency and model performance. The paper circulated widely among technology leaders and investors, helping establish Aschenbrenner as a prominent voice in the AI debate.
Born in Germany, Aschenbrenner graduated as valedictorian of Columbia University’s Class of 2021 and later worked briefly as a researcher at OpenAI. He subsequently partnered with AI researcher Carl Shulman to launch Situational Awareness, describing the venture as a combination of investment firm and AI-focused intellectual hub.
Early supporters included Stripe founders Patrick and John Collison, alongside technology investors Daniel Gross and Nat Friedman, both of whom are now involved in Meta Platforms’ AI initiatives.
The fund has become something of a phenomenon among retail and professional investors alike. Regulatory filings submitted by Situational Awareness are scrutinised across social media platforms, where followers closely analyse the firm’s disclosed positions and trading activity.
Interest intensified earlier this year when trading platform Autopilot introduced a feature enabling users to mirror positions disclosed in Situational Awareness’ regulatory filings.
The market impact of the firm’s disclosures has also become increasingly evident. In May, shares of renewable energy manufacturer T1 Energy surged more than 20% in a single session after investors learned that Situational Awareness had established a position in the company.
Technology-focused media outlets and podcasts regularly devote extensive coverage to Aschenbrenner’s investment decisions. Industry commentators have compared his influence on AI-related investing to the prominence previously enjoyed by high-profile growth investors during earlier market cycles, including the dot-com boom and the pandemic-era technology rally.
The firm’s performance has not been without volatility. Situational Awareness experienced losses in early 2025 after the launch of a low-cost AI model by Chinese startup DeepSeek triggered a sharp sell-off in semiconductor and AI-linked stocks. However, the portfolio recovered as demand for AI infrastructure accelerated, driving gains across chipmakers, power-equipment suppliers and related sectors.
Sources said the fund ultimately finished 2025 with returns of roughly 200%.
Some of Situational Awareness’ most successful investments remain largely invisible in public filings. US regulatory disclosures do not include foreign-listed holdings or private-company stakes, categories that encompass positions such as Anthropic and South Korean memory-chip manufacturer SK Hynix.
The firm reportedly invested in SK Hynix during late 2024 and benefited from the company’s strong share-price appreciation amid surging demand for advanced memory chips used in AI systems.
Situational Awareness also participated in Anthropic’s February 2025 fundraising round, when the company was valued at $61.5bn. Subsequent financing rounds have dramatically increased that valuation.
The relationship between Jane Street and Situational Awareness extends beyond the hedge fund itself. The two firms have jointly participated in venture investments, including financing rounds for AI chip startup MatX and cloud-computing provider Fluidstack.
As assets and responsibilities have grown, Situational Awareness has expanded its leadership team with experienced Wall Street hires. Recent additions include former Goldman Sachs executive Niki Webster as head of investor relations and Sven Khatri, previously of Citadel and Goldman Sachs, who joined to oversee treasury strategy.
