Leopold Aschenbrenner concentrates portfolio in SanDisk, Micron and AI infrastructure

Oct 2, 2026 04:49 (22d ago)

Leopold Aschenbrenner’s portfolio is concentrated in AI infrastructure, semiconductors and computing-related assets.
SanDisk and Micron represent 28% and 27.5% of the portfolio, while Bloom Energy, TSMC and Nebius account for 9.4%, 6.2% and 6.1%.
He added about $315 million in call-option premiums across AI and semiconductor names and exited earlier put hedges, according to disclosed holdings and options data.

Leopold Aschenbrenner’s disclosed portfolio is heavily concentrated in AI infrastructure, semiconductors and computing capacity. SanDisk (SNDK) and Micron (MU) are his largest long positions, representing 28% and 27.5% of the portfolio, respectively, followed by Bloom Energy (BE) at 9.4%, Taiwan Semiconductor Manufacturing Co. (TSM or TSMC) at 6.2% and Nebius (NBIS) at 6.1%. He also holds CoreWeave (CRWV), Core Scientific (CORZ), Applied Digital (APLD), Riot Platforms (RIOT) and IREN. Recent options data shows approximately $315 million in call-option premiums across AMD, Bloom Energy, CoreWeave, SK Hynix, SanDisk, Intel and the Roundhill Memory ETF (DRAM), while earlier put-option hedges on Nvidia, AMD, Micron, TSMC and ASML were fully exited. His private investments include Anthropic at about $5 billion, Fluidstack at $830 million, Source Foundry at $500 million, MatX at $500 million and Physical Intelligence at $1 billion.