Leopold Aschenbrenner Q2 2026 Portfolio Activity: Major Buys in Tech Stocks
Situational Awareness Partners' portfolio saw significant changes this quarter, with substantial purchases of SNDK and MU among other notable activity.
For the period ending June 30th, 2026 (Q2), Leopold Aschenbrenner, managing investment firm Situational Awareness Partners, demonstrated active portfolio management. The investor's holdings underwent considerable changes during this quarter, reflecting strategic buying and selling decisions.
Major Purchases This Quarter
The most significant buying activity by Leopold Aschenbrenner in Q2 2026 was concentrated within the Technology sector. Notably, he increased his stake in SANDISK CORP (SNDK) dramatically, adding over 1.3 million shares to bring the total position value up to approximately $5.7 billion as of June 30th.
Furthermore, Aschenbrenner significantly boosted holdings in MICRON TECHNOLOGY INC (MU), acquiring nearly 4.8 million additional shares during this quarter alone. Similarly, substantial purchases were made in TAIWAN SEMICONDUCTOR MANUFAC (TSM) and NEBIUS GROUP N.V. (NBIS). These four Technology stocks—SNDK, MU, TSM, and NBIS—constitute the core of his significant buying activity this quarter.
Significant Sales This Quarter
In contrast to the large buys, Aschenbrenner also divested a substantial position during Q2. The most notable sale was T1 ENERGY INC (FREY), where he completely exited the stock by selling all 4.9 million shares held at the end of the previous quarter.
Additionally, there were other sales activities reported for this period, although specific details regarding individual holdings are not provided in the changed_holdings list. The overall portfolio turnover rate reflects these buying and selling actions.
Other Portfolio Changes
Beyond the major buys and sells highlighted above, Aschenbrenner made several other adjustments to his portfolio this quarter:
- Increase in holdings of STMicroelectronics (STM) by a full 100%, adding exactly 780,270 shares.
- Acquisition of all new shares for Applied Digital Corp (APLD).
- Purchase of all new shares for Riot Platforms Inc (RIOT).
- Acquisition of all new shares for Hive Digital Technologies Ltd (HIVE).
- No change in the number of shares held for CleanSpark Inc (CLSK), which remained flat.
The investor also added a small position in Propetroleum Hldg Corp (PUMP) and increased his stake slightly in Babcock & Wilcox Enterprises (BW).
Portfolio Allocation Insights
As of June 30th, the portfolio's allocation shows Technology as its largest sector at approximately 47% ($8.6B), followed by Unknown allocations at nearly 38% ($6.9B). Industrials and Financial Services round out the known sectors.
The changes observed in Q2 indicate a clear preference for expanding positions within established Technology companies like Micron (MU) and Sandisk (SNDK), while simultaneously exiting another Technology-related investment, T1 Energy (FREY).