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HOME/PEOPLE/LEOPOLD ASCHENBRENNER
// PERSON

Leopold Aschenbrenner

ROLE FOUNDERAT SITUATIONAL AWARENESS LPMENTIONS 16LAST SEEN AUGUST 6, 2026
// BIO

Former OpenAI researcher and founder of Situational Awareness hedge fund; pivoted from AI bull to bearish on AI infrastructure stocks.

Discussed in
// RECENT MENTIONS
// SIGNALS
16 SIGNALS
01
mention·Parsers VC·AUGUST 6, 2026

Leopold Aschenbrenner's Situational Awareness hedge fund, a $45 billion AI investment powerhouse, dramatically collapsed. The fund, known for aggressive AI infrastructure bets, suffered immense losses

02
mention·Sourcery Newsletter·AUGUST 2, 2026

Turns out, a16z didn't win this one. Damn. Nevertheless, congrats to Leopold on his wedding & investor letter.

03
mention·StrictlyVC·AUGUST 1, 2026

The Wall Street Journal does a ticktock on how 24-year-old Leopold Aschenbrenner had to sell most of his hedge fund's public-stock portfolio to Citadel at a fire-sale discount

04
funding·All In·JULY 31, 2026

He started the fund with $225 million in 2024. He grew it 100x to 20 billion this year or so.

Source
05
mention·All In·JULY 31, 2026

He started the fund with $225 million in 2024. He grew it 100x to 20 billion this year or so. Ran it all the way up to 45 billion... Citadel bought the whole book. And now the question is, what is the AUM left and what is the high watermark?

Source
06
mention·All In·JULY 31, 2026

Citadel bought the whole book. And now the question is, what is the AUM left and what is the high watermark?

Source
07
mention·StrictlyVC·JULY 31, 2026

Assets under management reportedly grew to as much as $45 billion during their peak before the fund's positions began dropping sharply amid a broader decline in AI infrastructure investments. The fund had returned 439% for the year through June

Source
08
mention·Newcomer Newsletter·JULY 31, 2026

He was forced to sell the fund's public stock portfolio to Citadel after margin calls had left it in a liquidity crisis... declines on the order of 30% on core holdings created a sudden cash crisis.

Source
09
mention·Newcomer Newsletter·JULY 31, 2026

It's not that Aschenbrenner's bets were wrong, exactly: the infrastructure and chip plays at the heart of the portfolio… are still trading far above where they were a year ago.

Source
10
funding·My First Million·JUNE 30, 2026

Daniel Gross, Nat Friedman and like smart money was immediately behind him.

Source
11
mention·My First Million·JUNE 30, 2026

He published this thing and a lot of smart people were like, yo, this is like one of the smarter takes of what's going on. I think that attracted more capital.

Source
12
mention·StrictlyVC·JUNE 9, 2026

Leopold Aschenbrenner... has grown his hedge fund, Situational Awareness, to more than $20 billion in assets after gains of more than 1,000% since inception.

Source
13
mention·20VC·JUNE 7, 2026

Leo Ashenbrenner is a famous investor right now. Has huge cult following. He recently disclosed a very large position for him. 5.3% of the company. I think it's 15% of his portfolio.

Source
14
mention·All In·MAY 22, 2026

He's clearly a brilliant man. I think he's a Rhodes Scholar at like 19. And I think my understanding is he's putting up pretty extraordinary numbers... running a fund that went from zero to $5B.

Source
15
mention·StrictlyVC·MAY 19, 2026

Aschenbrenner wrote the widely circulated 'Situational Awareness' essay in 2024 that predicted explosive AI growth. His pivot to a bearish infrastructure posture — at scale — is a high-signal data point that the market may have front-run AI infrastructure demand.

Source
16
mention·StrictlyVC·MAY 19, 2026

Situational Awareness, an influential hedge fund founded by former OpenAI researcher Leopold Aschenbrenner, has turned sharply bearish on the AI infrastructure trade with more than $1.5 billion in put options against Nvidia and multibillion-dollar bearish bets against semiconductor and AI infrastructure companies including Oracle, Broadcom, AMD, TSMC, and ASML.

Source

AI-extracted from podcast / newsletter / paper summaries. May contain errors.