What stocks does Leopold Aschenbrenner own?

As of Q2 2026, Situational Awareness LP reported 26 positions with a combined 13F value of $20.2B. Its largest stock positions are SNDK ($5.7B), MU ($5.6B) and BE ($1.9B).

How often does Situational Awareness LP update its portfolio?

Situational Awareness LP files a 13F with the SEC every quarter, due 45 days after quarter end. The latest covers Q2 2026 and was filed Aug 14, 2026. The next one is due by Nov 16, 2026.

What does Situational Awareness LP's 13F leave out?

A 13F lists long positions in US-listed stocks and some options held on the last day of a quarter. It leaves out short positions, most bonds, holdings not listed in the US and anything bought or sold since the quarter ended.

Where does Situational Awareness LP's portfolio data come from?

From the 13F filings Situational Awareness LP makes to the SEC, available on EDGAR. Each quarter shows how positions changed from the one before.

Smart money

Situational Awareness LP

Leopold Aschenbrenner

Return history

Last year · filing-date model

$100,000 to $191,835

$100,000 in SPY: $125,031.

Total return

+91.8%

Annualized (1Y CAGR)

+56.2%

vs SPY

+39.7 pts/yr

Moves a year

Avg hold

4.6 months

Sold its entire public stock book, longs and shorts, in one block to Citadel on 30 Jul 2026 after margin calls. Returns here stop on that date. CNBC. What the fund itself lost is larger: it ran leverage and short positions, and a 13F shows neither.

6 filings · quarters -14.7% to +50.6%

All time

+91.8% since Feb 12, 2025

Fund size $20B today

Feb 12, 2025 to Jul 30, 2026 · min. 85% quarterly priced · Disclosed book, unaudited · Method

Position-weighted returns use each SEC filing date. Options use underlying-stock proxies, not option premiums; put proxies can lose more than 100%. Cash, shorts, non-13F holdings and trades between filings are excluded.

New NBIS and exited SMH in Q2 2026.

$20.2B in this filing26 positions

Holdings as of Jun 30, 2026. Filed Aug 14, 2026.

Stocks and funds

Share change vs Mar 31

1SNDKSandisk Corp28.13%
$5.7B - 2.5M shares+118.9%
2MUMicron Technology Inc27.64%
$5.6B - 4.8M shares+27712.4%
3BEBloom Energy Corp9.41%
$1.9B - 6.3M shares-3.3%
4TSMTaiwan Semiconductor Manuf6.27%
$1.3B - 2.6M shares+11713.9%
5NBISNebius Group N.V.6.11%
$1.2B - 4.5M sharesNEW
6CRWVCoreweave Inc3.69%
$744.5M - 7.5M shares+4.2%
7CORZCore Scientific Inc New3.30%
$665.6M - 26.0M shares-
8STMStmicroelectronics2.90%
$584.3M - 7.8M sharesNEW

#	Stock				At Jun 30	Now
1	SNDKSandisk Corp	28.13%	$5.7B	+118.9%	$2273.73	$1394.83 -38.7%
2	MUMicron Technology Inc	27.64%	$5.6B	+27712.4%	$1154.29	$931.24 -19.3%
3	BEBloom Energy Corp	9.41%	$1.9B	-3.3%	$302.70	$236.30 -21.9%
4	TSMTaiwan Semiconductor Manuf	6.27%	$1.3B	+11713.9%	$477.57	$422.25 -11.6%
5	NBISNebius Group N.V.	6.11%	$1.2B	NEW	$276.17	$188.41 -31.8%
6	CRWVCoreweave Inc	3.69%	$744.5M	+4.2%	$99.54	$69.69 -30.0%
7	CORZCore Scientific Inc New	3.30%	$665.6M	-	$25.59	$14.46 -43.5%
8	STMStmicroelectronics	2.90%	$584.3M	NEW	$74.89	$46.60 -37.8%

18 more on a paid plan

Unlock the full portfolio and quarterly changes.

Unlock all 18 holdings

What is missing

Top 10 concentration: 92%. This filing does not include cash, short positions, private investments, bonds, or many overseas holdings. Next filing due ~Nov 16, 2026.

Disclosed changes

Q2 2026 holdings. Exact trade dates are not disclosed.

More disclosures (4)

Common questions

What stocks does Leopold Aschenbrenner own?: As of Q2 2026, Situational Awareness LP reported 26 positions with a combined 13F value of $20.2B. Its largest stock positions are SNDK ($5.7B), MU ($5.6B) and BE ($1.9B).
How often does Situational Awareness LP update its portfolio?: Situational Awareness LP files a 13F with the SEC every quarter, due 45 days after quarter end. The latest covers Q2 2026 and was filed Aug 14, 2026. The next one is due by Nov 16, 2026.
What does Situational Awareness LP's 13F leave out?: A 13F lists long positions in US-listed stocks and some options held on the last day of a quarter. It leaves out short positions, most bonds, holdings not listed in the US and anything bought or sold since the quarter ended.
Where does Situational Awareness LP's portfolio data come from?: From the 13F filings Situational Awareness LP makes to the SEC, available on EDGAR. Each quarter shows how positions changed from the one before.