Situational Awareness's 13F: Memory Chips Dominate a Concentrated Book
As seen on the 24/7 Wall St. homepage on August 14, 2026.
- SNDKSANDISK CORP28%
- MUMICRON TECHNOLOGY INC27.5%
- BEBLOOM ENERGY CORP9.4%
- TSMTAIWAN SEMICONDUCTOR MANUFAC6.2%
- NBISNEBIUS GROUP N.V.6.1%
As of Jun 30, 2026 · disclosed Aug 14, 2026 · ~45 days stale — long positions only.
Leopold Aschenbrenner's Situational Awareness had 77.3% of its long book in five names as of June 30, with memory alone accounting for more than half. That is the portfolio behind the roughly $15 billion hit Jane Street took in July, disclosed only now and before the forced sale to Citadel.
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As of June 30, Situational Awareness packed 77.3% of its portfolio value into just five of its 23 long positions, so any meaningful move in one of those names hits the whole fund.
SanDisk and Micron together account for more than half the book, leaving the fund exposed to the demand cycles, inventory gluts, and geopolitical pressures that make memory semiconductors one of the most volatile corners of tech.
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Bloom Energy, Taiwan Semiconductor, and Nebius Group round out the top five, a mix that points toward a thesis around energy-intensive computing, though the filing itself states no such rationale.
The 13F covers positions as of June 30 but was disclosed on August 14, so it describes the portfolio before any repositioning in the weeks since quarter end.