For decades, the investment decisions of the world's most influential financial institutions were largely opaque. In an effort to bring a measure of clarity to the markets, the U.S. government mandated a specific disclosure that provides a quarterly, albeit delayed, glimpse into the portfolios of these major players.
This disclosure, known as Form 13F, has become an indispensable tool for analysts, journalists, and individual investors seeking to understand the positioning of so-called “smart money.”
What 13F Reveals
- • Quarterly equity holdings of major institutions
- • Position sizes and portfolio concentrations
- • Changes in conviction over time
- • Consensus among smart money managers
Critical Limitations
- • 45-day reporting delay
- • No short positions disclosed
- • Missing options details
- • Confidential treatment requests
The Genesis of Transparency
The requirement for institutional managers to file Form 13F was established in 1975 through amendments to the Securities Exchange Act of 1934. This legislation was a direct response to growing concerns about the increasing influence of institutional investors on financial markets.
The stated purpose was twofold: create a centralized repository for regulators to monitor institutional impact, and increase transparency to bolster public confidence in market integrity.
Who Must File and What They Report
The $100 Million Threshold
Institutional investment managers must file if they exercise investment discretion over accounts holding at least $100 million in Section 13(f) securities on the last trading day of any month.
Covered Securities
Limited to “Section 13(f) securities” including U.S.-listed equities, ETFs, certain options and warrants, and convertible debt securities. Mutual fund shares are excluded.
Filing Timeline
How to Find and Use 13F Filings
Step-by-Step: Finding a 13F Filing on EDGAR
- Navigate to the SEC's EDGAR Company Search page
- Enter the legal name of the investment manager (e.g., “Berkshire Hathaway Inc”)
- Filter by Filing Type and enter 13F-HR
- Click the “Filing” button for the desired quarter
- Look for the “Information Table” link for detailed holdings
Best Practices for Using 13F Data
- • Focus on the Right Managers: Track long-term, low-turnover strategies
- • Analyze Changes Over Time: Compare filings over several quarters
- • Prioritize Conviction: Pay attention to top 5-10 holdings
- • Look for Consensus: When multiple respected managers buy the same stock
- • Use for Idea Generation: Always conduct independent research
Critical Limitations You Must Know
The 45-Day Lag
Positions might not be disclosed until over four months after establishment, potentially rendering information obsolete.
Missing Short Positions
Complete absence of short positions is the most critical omission. A long position could be part of a pairs trade.
Confidential Treatment
Managers can request to temporarily omit positions, hiding their most sensitive trades for up to a year.
A Framework for Long-Term Investment Idea Generation
Given the significant limitations of 13F data, its effective use requires a disciplined approach. A prudent long-term investor should use filings as a sophisticated tool for idea generation, not portfolio replication.
What to Look For
- • New Positions: A manager's latest idea
- • Additions: Growing conviction signals
- • Concentration: Top 5-10 positions show highest conviction
- • Consensus: Multiple respected managers buying
The Right Mindset
- • Use as high-level screening tool
- • Focus on long-term, value-oriented investors
- • Treat findings as starting points
- • Always conduct independent due diligence
Profiling the Masters: Whose Filings Are Most Meaningful?
The utility of 13F analysis depends heavily on the manager being tracked. The most insightful filings come from investors whose strategies are long-term, value-oriented, and concentrated.
Warren Buffett
Berkshire Hathaway
Core Principle:
Buy wonderful businesses at fair prices.
Strategy:
Long-term buy-and-hold.
Portfolio Style:
Concentrated, low turnover, large-cap focused.
13F Utility:
Excellent for identifying high-quality, long-term compounders.
Top Holdings Analysis (Q1 2025)
| Rank | Company | Ticker | Portfolio % | Shares |
|---|---|---|---|---|
| 1 | Apple Inc. | AAPL | 25.76% | 210,000,000 |
| 2 | American Express Co. | AXP | 15.77% | 151,610,700 |
| 3 | The Coca-Cola Co. | KO | 11.07% | 267,999,999 |
| 4 | Bank of America Corp. | BAC | 10.19% | 631,573,531 |
| 5 | Chevron Corp. | CVX | 7.67% | 118,610,534 |
Stanley Druckenmiller
Duquesne Family Office
Core Principle:
Make large, concentrated bets on high-conviction macro themes.
Strategy:
Top-down global macro, long/short, flexible asset allocation.
Portfolio Style:
Concentrated, high turnover, macro-driven bets across asset classes.
13F Utility:
Excellent for identifying major macro themes and high-conviction bets.
Top Holdings Analysis (Q1 2025)
| Rank | Company | Ticker | Portfolio % | Shares |
|---|---|---|---|---|
| 1 | Natera, Inc. | NTRA | 16.13% | 3,402,330 |
| 2 | Teva Pharmaceutical Industries | TEVA | 7.67% | 14,879,750 |
| 3 | Coupang, Inc. | CPNG | 6.84% | 9,302,634 |
| 4 | Woodward, Inc. | WWD | 6.72% | 1,097,750 |
| 5 | Philip Morris International | PM | 5.88% | 1,105,268 |
David Tepper
Appaloosa Management
Core Principle:
Find value in distressed assets when others are fearful.
Strategy:
Contrarian, event-driven, distressed debt and equity.
Portfolio Style:
Concentrated, opportunistic, often in distressed sectors.
13F Utility:
Excellent for spotting contrarian bets in distressed or out-of-favor sectors.
Top Holdings Analysis (Q1 2025)
| Rank | Company | Ticker | Portfolio % | Shares |
|---|---|---|---|---|
| 1 | Alibaba Group Holding | BABA | 21.92% | 9,230,000 |
| 2 | PDD Holdings Inc. | PDD | 9.29% | N/A |
| 3 | Amazon.com, Inc. | AMZN | 8.58% | 2,120,950 |
| 4 | JD.com, Inc. | JD | 5.95% | 6,319,250 |
| 5 | Meta Platforms, Inc. | META | 5.69% | N/A |
Seth Klarman
The Baupost Group
Core Principle:
Margin of Safety; absolute risk aversion.
Strategy:
Multi-strategy value (equities, distressed debt, real estate).
Portfolio Style:
Diversified across asset types, high cash levels.
13F Utility:
Excellent for finding undervalued, complex situations.
Top Holdings Analysis (Q1 2025)
| Rank | Company | Ticker | Portfolio % | Shares |
|---|---|---|---|---|
| 1 | Willis Towers Watson PLC | WTW | 14.81% | 1,530,000 |
| 2 | Alphabet Inc. (Class C) | GOOG | 9.33% | 2,080,000 |
| 3 | WESCO International, Inc. | WCC | 8.95% | 2,010,000 |
| 4 | Liberty Global Ltd. (Class C) | LBTYK | 8.48% | 24,660,000 |
| 5 | Fidelity National Info Services | FIS | 7.49% | N/A |
Bill Ackman
Pershing Square
Core Principle:
Buy great businesses and fix them.
Strategy:
Concentrated, activist investing.
Portfolio Style:
Extremely concentrated (8-12 stocks), high conviction.
13F Utility:
Excellent for identifying potential activist targets.
Top Holdings Analysis (Q1 2025)
| Rank | Company | Ticker | Portfolio % | Shares |
|---|---|---|---|---|
| 1 | Chipotle Mexican Grill, Inc. | CMG | N/A | N/A |
| 2 | Restaurant Brands International | QSR | N/A | N/A |
| 3 | Hilton Worldwide Holdings | HLT | N/A | N/A |
| 4 | Howard Hughes Holdings Inc. | HHH | N/A | N/A |
| 5 | Alphabet Inc. (Class A & C) | GOOGL/GOOG | N/A | N/A |
Michael Burry
Scion Asset Management
Core Principle:
Identify and bet against market bubbles and inefficiencies.
Strategy:
Deep value, contrarian, macro-focused.
Portfolio Style:
Highly concentrated, high turnover, often contrarian.
13F Utility:
Excellent for spotting contrarian ideas and macro themes.
Top Holdings Analysis (Q1 2025)
| Rank | Company | Ticker | Position Type | Portfolio % |
|---|---|---|---|---|
| 1 | NVIDIA Corporation | NVDA | Put Option | 48.96% |
| 2 | Alibaba Group Holding | BABA | Put Option | 13.27% |
| 3 | PDD Holdings Inc. | PDD | Put Option | 11.88% |
| 4 | JD.com, Inc. | JD | Put Option | 8.26% |
| 5 | The Estée Lauder Companies | EL | Common Stock | 6.63% |
Li Lu
Himalaya Capital
Core Principle:
Buy high-quality businesses with strong moats to hold long-term.
Strategy:
Long-term, concentrated, Buffett-Munger style.
Portfolio Style:
Extremely concentrated, low turnover, US & Asia focus.
13F Utility:
Excellent for identifying high-quality, long-term compounders.
Top Holdings Analysis (Q1 2025)
| Rank | Company | Ticker | Portfolio % | Shares |
|---|---|---|---|---|
| 1 | Bank of America Corp. | BAC | 26.12% | 13,846,633 |
| 2 | Berkshire Hathaway Inc. | BRK.B | 21.61% | 897,749 |
| 3 | Alphabet Inc. (Class A) | GOOGL | 17.78% | 2,543,300 |
| 4 | Alphabet Inc. (Class C) | GOOG | 17.31% | 2,451,300 |
| 5 | East West Bancorp, Inc. | EWBC | 11.26% | 2,776,351 |
Mohnish Pabrai
Dalal Street LLC
Core Principle:
“Heads I win, tails I don't lose much.”
Strategy:
Concentrated deep value; “cloning” successful investors.
Portfolio Style:
Extremely concentrated, deep value, often in specific sectors.
13F Utility:
Excellent for finding deep value, contrarian ideas.
Top Holdings Analysis (Q1 2025)
| Rank | Company | Ticker | Portfolio % | Shares |
|---|---|---|---|---|
| 1 | Warrior Met Coal Inc. | HCC | 36.57% | 1,799,580 |
| 2 | Valaris Ltd | VAL | 23.87% | 1,427,564 |
| 3 | Alpha Metallurgical Resources | AMR | 22.11% | 414,616 |
| 4 | Noble Corp PLC | NE | 17.45% | 1,140,971 |