Free · Updated weekly · SEC 13F data

What are the world's
best investors buying?

We track 42 top hedge fund managers — Buffett, Ackman, Druckenmiller, Burry and more — and build a conviction-scored model portfolio from their public SEC filings.
Portfolio updated 2026-04-18 Data: SEC EDGAR 13F filings Free forever
Tracking: Buffett · Ackman · Druckenmiller · Burry · Klarman · Dalio · + 36 more
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Investors Tracked
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Portfolio Positions
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Model Return (4Y)
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Sectors
Browse investors →
AMZN421◆ TSM374◆ NVDA342◆ NFLX309◆ CVNA278◆ MELI235◆ SPOT232◆ DASH232◆ SE201◆ CEG141◆ AMZN421◆ TSM374◆ NVDA342◆ NFLX309◆ CVNA278◆ MELI235◆ SPOT232◆ DASH232◆ SE201◆ CEG141◆
Top Conviction
10 positions
1 AMAZON COM INC 1152
2 ALPHABET INC 915
3 MICROSOFT CORP 708
4 NETFLIX INC 589
5 UNITEDHEALTH GROUP INC 570
4Y Model Return +73%
Full backtest · Q1 2022 → Q4 2025 · 16 quarters

Beat the S&P 500

The model outperformed the S&P 500 in 12 out of 16 quarters, generating +17.5% cumulative alpha based on conviction signals from public SEC filings.
Run your own backtest
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Model
vs
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S&P 500
Model vs S&P 500 — Full Backtest
Q1 2022 → Q4 2025 · 16 quarters · 1-quarter hold
+73.2%
Model return
+55.7%
S&P 500 return
75%
Win rate
+17.5%
Total alpha
Quarter Model S&P 500 Alpha Winner
⚠ Disclaimer: This backtest has look-ahead bias. 13F filings are published 45–135 days after quarter-end. Past performance does not predict future results. This is not financial advice.
42 Investors Tracked
$2.4T AUM Covered
+73% 4Y Model Return
75% Win Rate vs S&P
Free No Signup Required
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Stocks held
Stocks held Total positions in the model portfolio. The model holds between 5 and 10 stocks, selected by conviction score.
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Top score
Top conviction score Highest conviction score among current holdings. Calculated from investor count, position size, and recent buying activity.
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Sectors
Sectors represented Distinct industries in the portfolio. Max 3 stocks per sector to prevent over-concentration.

Investor Type

Filter the portfolio by investment philosophy — each type draws from a different pool of tracked funds.
◈ All Investors
Combined conviction signals from all tracked investors across every strategy.
50 investors total
◉ Steady Compounders
Long-term value investors with decades of proven track records. Patient, buy-and-hold, quality-focused.
14 investors
◆ Innovation Edge
Tech and growth-focused investors targeting innovation, AI, software, and disruptive companies.
14 investors
◇ Bold Strategists
Macro, activist, and contrarian investors making bold, concentrated bets on market dislocations.
22 investors

Current Holdings

Stocks ranked by conviction score — a weighted combination of how many top investors hold it, how large their positions are, and whether they're actively buying. Insider trading data modifies each score by up to ±15%. Learn how the model works →
★ Top conviction: Amazon Com Inc — score 1152, held by 26 tracked tracked investors. Scores range 381–1152. How scores work →
No price data
# Company Price Sector Score Trend Insider
1 AMAZON COM INC
Baupost Group · Pershing Square · Duquesne Family Office
 — Technology
1152
→ —
2 ALPHABET INC
Pershing Square · Duquesne Family Office · Himalaya
 — Technology
915
→ —
3 MICROSOFT CORP
Viking Global Investors · Soros Fund · Tiger Global
 — Technology
708
→ —
4 NETFLIX INC
Coatue · Durable · ARK Invest
 — Communications
589
→ —
5 UNITEDHEALTH GROUP INC
Viking Global Investors · Soros Fund · Tiger Global
 — Healthcare
570
→ —
6 SPOTIFY TECHNOLOGY S A
Coatue · Lone Pine · Durable
 — Communications
559
→ —
7 MOLINA HEALTHCARE INC
Scion Asset Mgmt · Durable · Bridgewater Associates
 — Healthcare
474
→ —
8 RESTAURANT BRANDS INTL INC
Pershing Square · Duquesne Family Office · Durable
 — Consumer
439
→ —
9 UBER TECHNOLOGIES INC
Soros Fund · Tiger Global · Durable
 — Consumer
427
→ —
10 AMERICAN EXPRESS CO
Durable · Elliott · Bridgewater Associates
 — Financials
381
→ —
BC
#1 AMAZON COM INC 1152
Technology USA
#2 ALPHABET INC 915
Technology USA
#3 MICROSOFT CORP 708
Technology USA
#4 NETFLIX INC 589
Communications USA
#5 UNITEDHEALTH GROUP INC 570
Healthcare USA
#6 SPOTIFY TECHNOLOGY S A 559
Communications Europe
#7 MOLINA HEALTHCARE INC 474
Healthcare USA
#8 RESTAURANT BRANDS INTL INC 439
Consumer Americas
#9 UBER TECHNOLOGIES INC 427
Consumer USA
#10 AMERICAN EXPRESS CO 381
Financials USA

Analytics

Portfolio composition and conviction distribution
Conviction scores
Geographic exposure
Sector breakdown

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★

Market Trader

$1,000 to start — buy low, sell high, don't go bust.
Market Trader
$1,000 to start. 20 seconds on the clock.
BUY goes all-in. SELL cashes out.
Make as much as you can before time's up.
BCAP
Balance $1,000
$100.00 —
Timer starts on BUY BUY to start
Cash
$1,000
Shares
—
Net Worth
$1,000
Leaderboard — beat the legends

⚠ Fictional trading game for entertainment only — not real stock prices, not financial advice.

03

From the Desk

Updates, observations, and notes from behind the scenes
Site Update
April 2026
What's New: Congress Tracking, More Investors, and a Market Minigame
The past few months have been the most active stretch of development since launch — Congress disclosures, 8 new investors added to the model, and a trading minigame built from real volatility math.
Read full article →
Deep Dive
April 2025
The Conviction Behind the Consensus: What 42 Managers Actually Agree On
Genuine consensus across 42 institutional managers is rare. When six or more funds independently build the same position — and keep adding — that's a different kind of signal entirely.
Read full article →
Origin Story
March 2025
Why I Built Bogen Capital
13F filings are public and free — but buried in XML that nobody wants to parse. I built this to surface what the world's best investors actually believe in, without the paywall.
Read full article →
04

Frequently Asked Questions

Everything you need to know about how this model works
Bogen Capital is a free, open model portfolio that tracks what 42 of the world's top institutional investors are buying through their public SEC 13F filings. It builds a conviction-scored stock portfolio by aggregating signals from hedge fund managers like Warren Buffett, Bill Ackman, Michael Burry, and Seth Klarman — updated every week.
A 13F is a quarterly report filed with the SEC (Securities and Exchange Commission) by institutional investment managers who oversee more than $100 million in assets. It lists every US equity holding — stock name, CUSIP, and number of shares. All 13F data is public, free, and sourced directly from SEC EDGAR. The main limitation: filings are due up to 45 days after quarter-end, so data can be 45–135 days old.
Each stock gets a conviction score built from three signals: Breadth — how many of the 42 tracked investors hold it; Size — how large a percentage of each investor's portfolio it represents; and Momentum — whether investors are actively buying (adds points) or selling (deducts points). Investors are weighted by track record: Buffett counts double a smaller manager. The score is fully deterministic — no AI or black boxes. Read the full methodology →
The model runs a weekly update every Sunday, checking the latest 13F filings published to SEC EDGAR. When new quarterly disclosures arrive (typically January, April, July, October), the portfolio may change significantly as new buying and selling activity is reflected. The "Updated" date at the top of the page shows when data was last refreshed.
In a backtest covering Q1 2022 through Q4 2025 (16 quarters, 1-quarter holding period), the model returned +73.2% vs the S&P 500's +55.7% — a cumulative alpha of +17.5%. It outperformed in 12 out of 16 quarters (75% win rate). Important caveat: this backtest contains look-ahead bias since 13F data was not available in real-time during the tested periods. Past performance does not predict future results. Run your own backtest →
Steady Compounders tracks value-focused, long-term investors like Buffett (Berkshire), Klarman (Baupost), and Pabrai — favouring quality businesses held for years. Innovation Edge tracks growth and tech investors like Tiger Global, Coatue, and Dragoneer — focusing on disruptive tech and consumer platforms. Bold Strategists tracks macro, activist, and contrarian investors like Ackman (Pershing Square), Druckenmiller, and Burry — willing to take concentrated, unconventional bets. The "All Investors" view combines signals from all 42.
Separate from 13F filings, the model also tracks SEC Form 4 filings — mandatory disclosures when a company's own directors, officers, or major shareholders buy or sell stock. This "insider trading" (legal) data must be filed within 2 business days, making it much faster than quarterly 13F data. When both hedge funds and company insiders are buying the same stock, it's a particularly strong signal. See insider signals →
No. Bogen Capital is purely an informational and educational tool. It is not a licensed financial product or investment service. Adrian Bogen is not a registered financial advisor. Nothing on this site constitutes a recommendation to buy or sell any security. Always do your own research and consult a qualified financial advisor before making any investment decisions.
05

About This Model

How Bogen Capital works and what it is not

How it works

This model tracks the public 13F filings of 22 of the world's most respected institutional investors — from Warren Buffett and Seth Klarman to Ray Dalio and Carl Icahn. Every quarter, large fund managers must disclose their US equity holdings to the SEC.

Each stock is given a conviction score based on three signals: how many tracked investors hold it (breadth), how large their position is (conviction size), and whether they have been buying or selling recently (momentum).

What it is not

  • Not a licensed investment product or financial service
  • Not real-time — 13F filings are disclosed up to 135 days after quarter-end
  • Not a guarantee of any future return or outcome
  • Not a recommendation to buy or sell any security
  • Not accounting for taxes, fees, liquidity, or individual circumstances

All data is aggregated from publicly available SEC filings.

Data sources

All data is sourced directly from the SEC's free public EDGAR database. No third-party data vendors. Filings are cached locally for 7 days.

The scoring algorithm is fully deterministic — no machine learning or AI is involved. Every score traces back to specific investor filings.

⚠ Legal disclaimer

This website is provided strictly for informational and educational purposes. Nothing here constitutes financial advice or an offer to buy or sell any financial instrument.

Past model performance does not predict future results. Adrian Bogen accepts no liability for any investment decisions made based on this model.

⚠ Disclaimer: Bogen Capital is an informational model only. Adrian Bogen is not a licensed financial advisor. Data from public SEC EDGAR 13F filings, delayed up to 135 days. Not financial advice.
Return: High: Low:
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