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All Investors

Leopold Aschenbrenner

Situational Awareness LP

A young former OpenAI researcher investing in the power and chip demand of AI.

Stock Portfolio$20.2 BNet Buyer
Period
Q2 2026
As of Jun 30, 2026
Filed
Aug 14, 2026
Positions
23
Options · Underlying
$73.3 M

Largest Positions

Q2 2026
  1. SNDKSanDisk Corporation28.1%$5.67 BAdded+ 119%
  2. MUMicron Technology Inc27.6%$5.57 BAdded+ 27,712%
  3. BEBloom Energy Corporation9.4%$1.90 BTrimmed− 3%
  4. TSMTaiwan Semiconductor Manufacturing Co Ltd6.3%$1.27 BAdded+ 11,714%
  5. NBISNebius Group NV6.1%$1.23 BNew
  6. CRWVCoreWeave, Inc.3.7%$745 MAdded+ 4%
  7. CORZCORE SCIENTIFIC INC NEW3.3%$666 MUnchanged
  8. STMSTMICROELECTRONICS2.9%$584 MNew

Remaining 15 Positions 12.5%

What They Did This Quarter

Q1 2026 to Q2 2026

New5

  1. NBISNebius Group NV$1.23 B
  2. STMSTMICROELECTRONICS$584 M
  3. KEELKEEL INFRASTRUCTURE CORP$152 M
  4. VSHVISHAY INTERTECHNOLOGY INC$20.2 M
  5. CBRSCerebras Systems Inc$2.21 M

Added11

  1. MUMicron Technology Inc+ 27,712%$5.57 B
  2. TSMTaiwan Semiconductor Manufacturing Co Ltd+ 11,714%$1.27 B
  3. SNDKSanDisk Corporation+ 119%$5.67 B
  4. SHAZSharonAI Holdings Inc+ 578%$457 M
  5. RIOTRIOT PLATFORMS INC+ 49%$468 M
  6. +6 More

Trimmed3

  1. IRENIREN Ltd− 19%$433 M
  2. BEBloom Energy Corporation− 3%$1.90 B
  3. TET1 ENERGY INC− 51%$46.5 M

Sold Out8

  1. BITFARMS LTDBITFARMS LTD$38.8 M
  2. PSIXPOWER SOLUTIONS INTL INC$26.3 M
  3. AMDAdvanced Micro Devices Inc$20.2 M
  4. SMHVANECK ETF TRUST$10.3 M
  5. INTCIntel Corp$8.93 M
  6. +3 More

All Positions · 23

RankCompanySharesValueWeightChange
1SNDKSanDisk Corporation2.50 M$5.67 B28.1%Added+ 119%
2MUMicron Technology Inc4.83 M$5.57 B27.6%Added+ 27,712%
3BEBloom Energy Corporation6.27 M$1.90 B9.4%Trimmed− 3%
4TSMTaiwan Semiconductor Manufacturing Co Ltd2.65 M$1.27 B6.3%Added+ 11,714%
5NBISNebius Group NV4.46 M$1.23 B6.1%New
6CRWVCoreWeave, Inc.7.48 M$745 M3.7%Added+ 4%
7CORZCORE SCIENTIFIC INC NEW26.0 M$666 M3.3%Unchanged
8STMSTMICROELECTRONICS7.80 M$584 M2.9%New
9APLDApplied Digital Corp15.4 M$469 M2.3%Added+ 14%
10RIOTRIOT PLATFORMS INC17.1 M$468 M2.3%Added+ 49%
11SHAZSharonAI Holdings Inc5.40 M$457 M2.3%Added+ 578%
12IRENIREN Ltd9.47 M$433 M2.1%Trimmed− 19%
13CLSKCleanSpark Inc12.3 M$179 M0.89%Unchanged
14KEELKEEL INFRASTRUCTURE CORP26.5 M$152 M0.75%New
15SEISOLARIS ENERGY INFRAS INC1.13 M$90.9 M0.45%Added+ 2%
16WYFIWHITEFIBER INC1.76 M$68.3 M0.34%Unchanged
17BTDRBitdeer Technologies Group3.44 M$54.6 M0.27%Unchanged
18TET1 ENERGY INC4.90 M$46.5 M0.23%Trimmed− 51%
19HIVEHIVE DIGITAL TECHNOLOGIES LT9.13 M$33.2 M0.16%Added+ 169%
20BWBABCOCK & WILCOX ENTERPRISES2.03 M$28.6 M0.14%Added+ 50%
21PUMPProPetro Holding Corp1.96 M$28.1 M0.14%Added+ 115%
22VSHVISHAY INTERTECHNOLOGY INC375,000$20.2 M0.10%New
23CBRSCerebras Systems Inc10,000$2.21 M0.01%New

Options

The value on an option line is not the premium paid; it is the quarter-end value of the underlying shares the options cover. These lines are left out of the stock portfolio and the weights.

CompanyTypeSharesUnderlying Value
BEBloom Energy CorporationCall145,800$44.1 M
TSMTaiwan Semiconductor Manufacturing Co LtdCall50,000$23.9 M
INFYInfosys LtdPut500,000$5.25 M

Recent Quarters

  1. $255 MQ4 20246 Positions
  2. $546 MQ1 202511 Positions
  3. $1.10 BQ2 20257 Positions
  4. $2.24 BQ3 202519 Positions
  5. $3.91 BQ4 202524 Positions
  6. $3.86 BQ1 202626 Positions
  7. $20.2 BQ2 202623 Positions

Each bar is the stock portfolio at that quarter's end; options not included.

Not Investment Advice

This screen shows public filings. Copying these investors' trades is not a recommendation; the data is weeks or even months late and does not show the whole position.

A 13F only shows long positions and options traded in the US; short sales, cash and foreign shares are not visible. The filing can come up to 45 days after quarter end.

Buys and sells are computed from the SHARE COUNT difference between two consecutive filings; price changes are not counted as buying. Stock splits are removed from the counts.

Photo: Fortune · Josh Edelson · Cropped

SEC EDGARFiled Aug 14, 2026 · As of Jun 30, 2026

To Understand This

What Is a 13F: How to Read Famous Investors' PortfoliosThe filing that shows what Buffett bought is real, but it is three months late and only part of the picture.Options: Calls, Puts and the Anatomy of a PremiumA way to trade direction without owning the stock — and why the clock inside the premium always runs against the buyer.