Who Should You Listen To?
Every great investor has to show their hand. Here's what the data says.
Every institutional investor managing over $100M must disclose their equity holdings quarterly via SEC Form 13F. We analyzed the filings of every investor profiled on this site who has public disclosures — ranked by whose opinion should carry the most weight.
8
13F Filers Analyzed
$287B+
Combined AUM
41
Profiled Investors
200+
Quarterly Filings
The Thesis
Not All Opinions Are Created Equal
There are 5,000+ institutional investors who file 13F reports with the SEC every quarter. But the signal quality varies enormously. A fund with 500 positions across every sector tells you almost nothing — it's a closet indexer. A fund with 5 positions tells you exactly what that manager thinks is the best risk-adjusted opportunity in the world right now.
We built a Signal Score to cut through the noise. It measures not just what someone owns, but how much conviction they have, how long they've been doing it, whether they're managing their own money or other people's, and whether they explain their reasoning publicly. The higher the score, the more you should pay attention when their portfolio changes.
Signal Score Rankings
Ranked by whose 13F filings are most useful for other investors
Himalaya Capital Management · CIK: 0001709323
Ultra-concentrated, Munger-backed quality compounder · 2010–present
Signal Score
$3.57B
13F Value
$17.2B
AUM
9
Positions
100%
Top 10
Top Holdings
Behavioral DNA
Why This Score
Charlie Munger trusted Li Lu with his personal $88M (grew to ~$400M). Only 9 holdings, all maximum conviction. 26.4% annualized since 1998 vs S&P's 2.25% over same period. His 13F returned +53% in the trailing year. When Li Lu starts a new position (like Crocs or PDD), the investment world should pay attention.
Recent Moves
•NEW: Crocs (CROX, $54M) — brand compounder at a discount, small starter position
•Exited Sable Offshore entirely — speculative energy bet didn't work out
•Swapped 92K GOOGL shares for GOOG (Class C) — same economics, no voting rights
Pershing Square Capital Management · CIK: 0001336528
Ultra-concentrated activist · 2004–present
Signal Score
$15.5B
13F Value
$19.7B
AUM
11
Positions
99.5%
Top 10
Top Holdings
Behavioral DNA
Why This Score
Ultra-concentrated portfolio means every position is high-conviction. PSH returned +20.9% in 2025, +22% CAGR over 8 years. When Ackman adds a new position (like META), he's done deep work. Filed for dual IPO modeled after Berkshire Hathaway.
Recent Moves
•NEW: Meta Platforms ($1.76B) — massive new position in Q4 2025
•Added 65% more Amazon shares (+$874M) — platform compounder thesis
•Exited Chipotle (CMG) entirely — held since 2015, ~16% IRR
Dalal Street LLC (Pabrai Investment Funds) · CIK: 0001549575
Ultra-concentrated Buffett disciple — few bets, big bets · 2000–present
Signal Score
$402M
13F Value
$1.1B
AUM
4
Positions
100%
Top 10
Top Holdings
Behavioral DNA
Why This Score
Only 4 positions. That's it. Every dollar is a maximum-conviction bet. $650K Buffett lunch (2007) + 24-year track record of ~25% annualized (2000–2018). Zero tech, zero growth — pure cyclical deep value in met coal and offshore drilling. When Pabrai has only 4 stocks, each one is a screaming thesis.
Recent Moves
•Added 2.6M Transocean shares (+10.6%) — deepening offshore drilling conviction
•Exited Noble Corp (NE) entirely — consolidated into Transocean
•Trimmed Valaris -57% — portfolio optimization, not sector exit
Paulson & Co. (family office since 2020) · CIK: 0001035674
Ultra-concentrated event-driven — gold, pharma, special situations · 2006–present (family office since July 2020)
Signal Score
$3.26B
13F Value
$10.7B (family office)
AUM
9
Positions
100%
Top 10
Top Holdings
Behavioral DNA
Why This Score
Only 9 positions managing his own $10.7B — pure skin-in-the-game signal. The portfolio returned +81% trailing 12 months and +14% in Q4 alone. Gold miners generated 104% gains in 2023. His PPTA thesis (antimony = national security) is the kind of contrarian insight that 13F analysis was built for.
Recent Moves
•NEW: Solstice Advanced Materials ($68M) — new advanced materials position
•Reduced Madrigal (MDGL) by 10.5% — took profits on #1 holding
•Added 3.5% more Bausch Health — restructuring catalyst conviction deepening
CapWealth Advisors · CIK: 0001531809
Sophisticated Simplicity — quality + contrarian + activist · 2013–present
Signal Score
$1.46B
13F Value
$1.9B
AUM
121
Positions
57.6%
Top 10
Top Holdings
Behavioral DNA
Why This Score
Pagliara doesn't just pick stocks — he creates catalysts. Founded Investors Unite, filed lawsuits, wrote a book. 12-year track record with 3.7x growth. His FNMA preferred position is the signature activist bet. Infrastructure and contrarian entry patterns are highly replicable signals.
Recent Moves
•FNMA preferreds became top holding in Q3-Q4 2025 restatement
•Added 502K AT&T shares (+3,242%)
•LUMN call options: 500K contracts on top of 5.5M equity shares
Oaktree Capital Management · CIK: 0000949509
Distressed debt & credit specialist (equity arm) · 2007–present
Signal Score
$7.03B
13F Value
$223B
AUM
172
Positions
60%
Top 10
Top Holdings
Behavioral DNA
Why This Score
Marks manages $223B total but only $7B in equities (~3% of AUM) — his real genius is in credit markets that 13F doesn't capture. Still, 172 equity positions dilute individual stock signal. His memos and the overall sector allocation (heavy energy/mining/distressed) are more valuable than any single pick.
Recent Moves
•Expand Energy (fka Chesapeake) is now #1 position — natural gas conviction
•Added 30.5% to Core Scientific (CORZ) — Bitcoin/AI data center thesis
•Added Grupo Aeromexico ($83M) — new emerging market recovery play
ARK Investment Management · CIK: 0001697748
Disruptive innovation growth — high volatility, high conviction · 2014–present
Signal Score
$15.07B
13F Value
$13B
AUM
196
Positions
42%
Top 10
Top Holdings
Behavioral DNA
Why This Score
ARK is unique — they publish daily trades, making the 13F redundant for followers. ARKK returned +35% in 2025 and +68% in 2023, but -67% in 2022. The innovation thesis is polarizing but she spots disruption themes 2-3 years early. Best used as a disruptive innovation scout, not a portfolio template. 196 positions dilutes individual stock signal.
Recent Moves
•Trimmed Tesla -19% but it remains #1 position ($1.31B) — robotaxi thesis intact
•Added Tempus AI (TEM, +25%) — AI-powered precision medicine conviction
•Added Coinbase (+6%) while trimming Robinhood — crypto proxy rotation
Scion Asset Management · CIK: 0001649339
Contrarian deep-value — FUND TERMINATED Nov 2025 · 2013–2025 (terminated Nov 10, 2025)
Signal Score
$1.38B (notional)
13F Value
$155M (terminated)
AUM
8
Positions
100%
Top 10
Top Holdings
Behavioral DNA
Why This Score
Famous for 'The Big Short' but fund is now TERMINATED. His final filing was a massive AI bubble short (PLTR + NVDA puts). Historical 13Fs showed +460% cumulative returns since 2013, but extreme turnover (126.7%/quarter) made position-level signals unreliable. His macro themes were more valuable than specific picks.
Recent Moves
•PLTR puts ($912M notional) — massive bearish AI bet in final filing
•NVDA puts ($187M notional) — short semiconductor/AI thesis
•Exited ALL Chinese stocks (BABA, BIDU, JD) and healthcare (UNH, REGN) from Q2
Where the Smart Money Agrees
Positions held by multiple ranked investors
Both see Alphabet as the dominant AI + search + cloud platform — combined $3.5B in conviction between them
Three different investors, same macro thesis: energy and mining are structurally undervalued. Met coal, gold miners, offshore drilling, natural gas.
AI/defense convergence — government and enterprise AI adoption play. Meanwhile Burry bet AGAINST it with $912M in puts.
Berkshire as the ultimate quality anchor — Buffett's compounding machine held by both concentrated investors
Both are long-term Bank of America holders — US banking system as infrastructure play
Central banks diversifying away from USD post-Russia sanctions. Both see gold miners as leveraged play on gold appreciation.
Signal Score Methodology
| Factor | Weight |
|---|---|
| Track Record Length | 20% |
| Concentration / Conviction | 20% |
| Skin in the Game | 20% |
| Transparency & Reasoning | 15% |
| Consistency of Approach | 15% |
| Scale Relevance | 10% |
Why Don't These Investors File?
SEC Form 13F only applies to institutional investment managers with over $100M in public equity holdings. Entrepreneurs, athletes, authors, VC investors, and private fund managers aren't required to disclose. That doesn't mean their investment thinking is less valuable — it just means it's harder to track.
For every person below, we've identified what a 13F-style behavioral analysis could reveal if applied to their public statements, known investments, and business decisions. The same analytical framework works — the data sources are just different.
Sam Altman
VC/startup investor — private investments not subject to 13F
A 13F-style analysis of AI investment patterns could map the future of the industry
Marc Andreessen
VC fund — private market investments, not public equities
a16z's portfolio companies going public creates a trackable pattern
Patrick Bet-David
Insurance & media company — not an investment manager
His public stock picks on Valuetainment could be tracked systematically
Sara Blakely
Entrepreneur — personal investments not disclosed
Consumer brand pattern recognition from a founder who built Spanx
Tom Brady
Athlete/broadcaster — personal investments private
His VC portfolio (Autograph, TB12) reveals sports-tech conviction
Grant Cardone
Real estate fund — 13F only covers public equities
His real estate portfolio data could create a property-market equivalent
Tucker Carlson
Media personality — not an investment manager
Media influence analysis on market movements would be novel
Chamath Palihapitiya
Stopped filing 13F after Q2 2019 — Social Capital restructured to family office/SPAC sponsor
His SPAC track record and Form 4 insider filings (SOFI, CLOV) reveal conviction patterns
Brian Chesky
CEO — insider holdings disclosed via Form 4, not 13F
Insider trading patterns (Form 4) reveal confidence in Airbnb
James Clear
Author — personal investments private
Habit-based investing framework could be a unique analytical lens
Jim Cramer
CNBC host — his Charitable Trust is tracked separately by CNBC, not via 13F
His public picks are already tracked but lack systematic behavioral analysis
Mark Cuban
Individual investor — below 13F threshold or uses private vehicles
His Shark Tank deal patterns + public market commentary are trackable
Daniel Ek
CEO — insider holdings via Form 4, not investment manager
Insider trading pattern shows confidence in Spotify's trajectory
Tim Ferriss
Angel/VC investor — private investments, not public equities
His angel portfolio (Uber, Twitter, etc.) shows early-stage pattern recognition
Lex Fridman
Researcher/podcaster — not an investment manager
His guest selection patterns predict which companies get attention
Keith Gill
Individual retail investor — below 13F threshold
His public posts revealed a thesis process worth systematizing
Alex Hormozi
Private equity — buys private businesses, not public stocks
His acquisition framework applied to public markets would be powerful
Andrew Huberman
Neuroscientist — not an investment manager
Biotech picks based on neuroscience expertise would carry weight
Dwayne Johnson
Actor/entrepreneur — personal investments private
His brand-building instincts applied to consumer stock selection
Michael Jordan
Owner/investor — personal investments via family office, may not file
His brand equity + competitive instincts applied to investing
Travis Kalanick
Entrepreneur — CloudKitchens is private
His platform-economics thinking applied to public markets
Conor McGregor
Athlete/entrepreneur — personal investments private
His brand-monetization patterns predict consumer trends
MrBeast
Creator/entrepreneur — personal investments private
His media analytics + consumer insights applied to stock selection
Kevin O'Leary
O'Shares ETFs are transparent; personal portfolio not fully disclosed via 13F
His Shark Tank deal analysis + ETF construction reveal investment DNA
Dolly Parton
Entertainer/philanthropist — personal investments private
Her business empire (Dollywood, licensing) shows long-term compounding
Jordan Peterson
Academic/author — not an investment manager
Behavioral psychology applied to market psychology
Joe Rogan
Podcaster — personal investments private
His content selection predicts which companies get cultural attention
Cristiano Ronaldo
Athlete — personal investments private
His brand portfolio (CR7, hotels) reveals global consumer patterns
Arnold Schwarzenegger
Actor/politician — personal investments private
His real estate portfolio history shows long-term asset allocation thinking
Taylor Swift
Musician — personal investments private
Her economic impact ('Swift Effect') on companies she touches is measurable
Nassim Taleb
Universa Investments (advisor) — tail-risk fund with limited 13F disclosure
His barbell strategy and tail-risk positions would be the most valuable 13F in markets
Gary Vaynerchuk
Entrepreneur/VC — private investments via VaynerFund
His consumer trend-spotting applied to public markets
Oprah Winfrey
Media mogul — personal portfolio not disclosed via 13F
Her brand endorsement patterns predict consumer stock performance
The Vision
Democratize Investment Intelligence
Right now, this analysis is manually compiled from public SEC filings. But the system behind it can be automated, expanded, and applied to any of the 5,000+ institutional investors who file 13F reports. Imagine:
For Individual Investors
Real-time alerts when your favorite investor adds a new position. Behavioral fingerprints that explain why they bought, not just what. Portfolio comparison tools that show how your holdings stack up.
For Wealth Managers
White-label analysis for client conversations. Show clients how their portfolio compares to the top minds in investing. Generate talking points from the latest 13F changes. Differentiate with data.
For Fund Managers
Competitive intelligence on what other managers are buying. Consensus vs. contrarian analysis. Crowded trade detection. Style drift monitoring across your peer group.
Want this built for your portfolio, your clients, or your fund?
Frequently Asked Questions
What is a 13F filing?
SEC Form 13F is a quarterly report filed by institutional investment managers with over $100M in equity assets. It discloses all long equity and options positions. Filings are due 45 days after quarter-end, so data always represents a lagged snapshot. It does NOT include short positions, bonds, private investments, or non-US securities.
How is the Signal Score calculated?
The Signal Score (1-10) rates how useful an investor's 13F filings are for other investors. It weighs: track record length (20%), concentration/conviction (20%), skin in the game (20%), public transparency about reasoning (15%), consistency of approach (15%), and scale relevance (10%). Higher concentration, longer track records, and own-money management score higher.
Should I just copy these portfolios?
No. 13F filings are 45 days delayed — by the time you see them, the position may have changed. These investors also have different risk tolerances, time horizons, and tax situations than you. The value is in understanding HOW they think and what patterns drive their decisions, not in blindly copying positions.
Why don't all investors file 13F?
13F filings are only required for institutional investment managers with over $100M in public equity holdings. VC funds (private investments), individual investors (below threshold), real estate funds (non-equity), and media personalities don't file because they don't manage public equity portfolios at institutional scale.
How often is this data updated?
13F filings are published quarterly, with data due 45 days after each quarter-end (mid-February, mid-May, mid-August, mid-November). This page is updated after each filing cycle. The dynamic platform we're building will pull new filings automatically within hours of publication.
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Read moreDisclaimer: This analysis is based on publicly available SEC 13F filings and reflects the author's interpretation of historical patterns. It is not endorsed by any investor profiled on this page. Signal Scores are qualitative assessments, not quantitative models. 13F filings are 45 days delayed and only show long equity/options positions. This is not financial or investment advice. Past performance does not predict future results. Glen Bradford holds positions in Fannie Mae and Freddie Mac securities. Some content was generated or edited with AI assistance.