Portfolio Value

$5.52B

Total Holdings

1-Year Return

+28.9%

New Positions

About Leopold Aschenbrenner and SITUATIONAL AWARENESS LP

Leopold Aschenbrenner is the portfolio manager at SITUATIONAL AWARENESS LP, one of the closely tracked institutional investors in our database. Every quarter, institutional investment managers with over $100 million in assets under management are required to file a 13F report with the SEC, disclosing their long equity positions. These filings give retail investors a rare window into how professional money managers are allocating capital.

As of March 2026, Leopold Aschenbrenner's 13F portfolio contains 20 positions with a disclosed market value of approximately $5.52 billion. This analysis covers their top holdings, recent portfolio changes, and key investment themes.

Over the past year, Leopold Aschenbrenner's portfolio has delivered a +28.9% return, significantly outperforming the broader market.

Leopold Aschenbrenner's Top 10 Holdings — March 2026

The following table shows Leopold Aschenbrenner's largest disclosed stock positions ranked by portfolio weight as reported in the most recent 13F filing. These represent the highest-conviction bets in the portfolio:

#	Company	Ticker	Portfolio Weight	Market Value	Performance
1	LUMENTUM HLDGS INC NEW ADDED	LITE	867.50%	$478.6M	—
2	CORE SCIENTIFIC INC NEW ADDED	CORZ	758.95%	$418.7M	-18.8%
3	IREN LIMITED ADDED	IREN	595.68%	$328.6M	-19.5%
4	APPLIED DIGITAL CORP ADDED	APLD	503.98%	$278.0M	+6.9%
5	SANDISK CORP ADDED	SNDK	453.61%	$250.2M	+111.6%
6	CIPHER MINING INC NEW ADDED	CIFR	280.10%	$154.5M	—
7	COHERENT CORP ADDED	COHR	160.69%	$88.6M	+71.3%
8	SOLARIS ENERGY INFRAS INC ADDED	SEI	155.53%	$85.8M	+15.0%
9	TOWER SEMICONDUCTOR LTD ADDED	TSEM	153.89%	$84.9M	+62.4%
10	RIOT PLATFORMS INC ADDED	RIOT	141.65%	$78.1M	-33.4%

Data sourced from SEC 13F filings. Holdings reflect disclosed long equity positions. Options and short positions may not be reflected.

Portfolio Strategy & Concentration Analysis

Leopold Aschenbrenner's investment approach reflects a highly concentrated portfolio strategy. The top position, LUMENTUM HLDGS INC (LITE), represents 867.5% of the total portfolio, while the top 5 holdings collectively account for 3179.7% of disclosed assets.

During this period, Leopold Aschenbrenner initiated 10 new positions — a signal that they identified compelling entry points in new opportunities. New positions often represent the highest-conviction ideas as managers dedicate fresh capital to them.

Additionally, Leopold Aschenbrenner increased stakes in 10 existing positions, a sign of growing conviction in those holdings.

New Positions Added in March 2026

The following stocks represent new entries in Leopold Aschenbrenner's portfolio — positions that were not present in the prior quarter's 13F filing. New positions are closely watched by investors as they signal fresh conviction:

Company	Ticker	Portfolio Weight	Market Value
LUMENTUM HLDGS INC	LITE	867.50%	$478.6M
CIPHER MINING INC	CIFR	280.10%	$154.5M
KILROY RLTY CORP	KRC	89.94%	$49.6M
EQT CORP	EQT	68.01%	$133.0M
BLOOM ENERGY CORP	BE	64.34%	$875.5M

Best Performing Holdings in Leopold Aschenbrenner's Portfolio

Based on available performance data, the following positions have been the strongest contributors to Leopold Aschenbrenner's portfolio returns:

SNDK

SANDISK CORP

+111.6%

COHR

COHERENT CORP

+71.3%

TSEM

TOWER SEMICONDUCTOR LTD

+62.4%

HUT

HUT 8 CORP

+32.0%

SEI

SOLARIS ENERGY INFRAS INC

+15.0%

Understanding Leopold Aschenbrenner's 13F Filing

A 13F filing is a quarterly disclosure required by the SEC for institutional investment managers that exercise discretion over $100 million or more in qualifying securities. These filings must be submitted within 45 days of the end of each calendar quarter.

Important caveats about 13F data:

Data is delayed by up to 45 days from the end of the quarter
Only long equity positions are disclosed — short positions are not required
Options positions are disclosed separately and may indicate hedging strategies
The portfolio may have changed significantly since the filing date
Not all positions need to be disclosed (some confidentiality provisions exist)

Despite these limitations, 13F filings remain one of the best public sources of information on how professional investors are positioning their portfolios. Use this data as one input among many, alongside your own research and risk tolerance.

How Retail Investors Can Use This Information

Following institutional 13F filings like Leopold Aschenbrenner's can provide valuable investment insights — but it's important to use this information correctly:

Identify high-conviction ideas: Large positions and new entries signal where managers have the strongest conviction.
Spot emerging themes: Cross-portfolio analysis reveals sector rotations and macro themes playing out across institutional money.
Validate your own research: If an investor you respect owns a stock you're analyzing, that can reinforce your thesis.
Track changes over time: Watching a manager increase or decrease positions over multiple quarters shows conviction trends.
Don't blindly copy trades: Remember that institutional investors have different time horizons, risk tolerances, and information than retail investors.

You can track Leopold Aschenbrenner's complete portfolio in real-time on Insider Edges, including historical holdings, sector breakdown, and performance data.

Other Top Investors to Follow

If you track Leopold Aschenbrenner's portfolio, you may also be interested in following these other closely watched institutional investors:

Michael Burry Warren Buffett Ray Dalio Cathie Wood Bill Ackman

Track Leopold Aschenbrenner's Portfolio in Real-Time

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Leopold Aschenbrenner Portfolio March 2026 - Top Holdings & 13F Analysis

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