Form 13F-HR is filed quarterly by institutional investment managers with over $100 million in assets under management. It discloses their long equity holdings, allowing retail traders to follow the "smart money" into stocks like Berkshire Hathaway, Renaissance Technologies, and hedge fund giants.
While Forms 3, 4, and 144 focus on individual insiders, SEC Form 13F-HR reveals what large institutions – hedge funds, mutual funds, pension funds, and family offices – are buying and selling. Any manager with at least $100 million in discretionary assets under management (AUM) must file this form within 45 days after the end of each calendar quarter.
Why traders obsess over 13F filings – They provide a legal way to peek into the portfolios of the world's best investors. When Warren Buffett, Steve Cohen, or Ken Griffin buys a stock, the 13F lets you follow – albeit with a 45‑day lag.
| Criteria | Description |
|---|---|
| Institutional investment manager | Any entity that invests in, or buys and sells, securities for its own account or the accounts of others (e.g., hedge funds, banks, insurance companies, pension funds, registered investment advisers) |
| AUM threshold | Exercises investment discretion over $100 million or more in Section 13(f) securities |
| Section 13(f) securities | Mostly US‑listed equities (NYSE, Nasdaq, ARCA), exchange‑traded funds (ETFs), and certain closed‑end funds. Options, bonds, and foreign stocks are excluded unless the underlying is a 13(f) security. |
Who is exempt?
| Quarter | Period End | Filing Deadline (45 days later) |
|---|---|---|
| Q1 | March 31 | May 15 |
| Q2 | June 30 | August 14 |
| Q3 | September 30 | November 14 |
| Q4 | December 31 | February 14 (next year) |
Note: If the deadline falls on a weekend or SEC holiday, it moves to the next business day. The form is filed electronically via EDGAR and becomes publicly available instantly.
The form has two main parts:
For each security held at quarter end:
| Column | What It Shows |
|---|---|
| Name of issuer | Company name (e.g., Apple Inc.) |
| Title of class | Common stock, preferred, etc. |
| CUSIP | Unique 9‑character identifier |
| Fair market value ($) | Total position value in USD |
| Shares / principal amount | Number of shares held |
| Investment discretion | Sole, shared, or none (for sub‑advisors) |
| Voting authority | Sole, shared, or none |
| Put / call indicator | If derivative, whether it's a put or call (rare, but exists) |
Important: The form shows long positions only. Short sales, puts, calls, and bonds are generally not reported (some derviatives are if they reference 13(f) securities, but most managers omit them).
A $100 million hedge fund adding 20,000 shares of a $500 billion mega‑cap is rounding error. Focus on position sizes relative to the manager's total portfolio – a new 5% position is far more meaningful than a 0.1% add.
When three or more top funds buy the same stock in the same quarter, that's a "cluster buy" – historically predictive of outperformance.
By the time a 13F is filed, the manager may have already sold. Use 13Fs to identify themes and sectors that smart money is accumulating, not to front‑run next week's trades.
| Manager | Style | What to Watch |
|---|---|---|
| Berkshire Hathaway | Long‑term value | New bank, consumer, or energy positions; large Buys |
| Renaissance Technologies | Quantitative | Thousands of small, rapidly traded names – hard to copy |
| Bridgewater Associates | Global macro | ETF positions (SPY, QQQ, EEM), gold (GLD), TLT |
| Pershing Square (Ackman) | Concentrated activist | 5‑8 large positions, usually with a catalyst |
| Tiger Global / Coatue | Tech growth | Early‑stage and high‑growth tech names |
| Scion Asset Management (Burry) | Deep value / contrarian | Often buys unloved sectors (e.g., regional banks, energy) |
Scenario: On November 14, Renaissance Technologies files its Q3 13F-HR.
The filing shows:
Trader reaction:
But – Remember the 45‑day lag. By mid‑November, Renaissance may have already reduced AMD. Check more recent Form 4 filings or news before trading.
Caution: Some managers intentionally delay filing or file incomplete reports. Others (like Carl Icahn) use confidential treatment requests to hide trades for up to a year. Always cross‑reference.
| Limitation | Why It Matters |
|---|---|
| 45‑day lag | Positions may have changed materially |
| No short positions | A fund could be net short a stock but the 13F shows a long – misleading |
| No derivatives | Options, swaps, and futures that hedge exposure are invisible |
| No foreign stocks | Many global funds hold significant non‑US positions not reported |
| No cash or bonds | A manager could be bearish (in cash) but still report old holdings |
| Discretionary interpretation | Some managers round holdings or report late; others use non‑13F vehicles |
| Copying can be dangerous | A large sale after quarter end could crater the stock before you act |
| Form | Focus | Lag | Signal Type |
|---|---|---|---|
| 13F-HR | Institutional long holdings | 45 days | Thematic, sector, multi‑manager clusters |
| Form 4 | Individual insider trades | 2 days | Direct confidence signal from executives |
| Form 144 | Planned affiliate sales | Before sale | Supply overhang warning |
| 10‑K / 10‑Q | Company financials | 40‑60 days | Fundamental health |
| Tool | Free? | Features |
|---|---|---|
| 🚀 Finecho | Yes | Track SEC filings, insider trades, all in one place – built for traders. |
| SEC EDGAR | Yes | Raw filings, search by manager name |
| Dataroma | Free | Focuses on top value investors (Buffett, Icahn, etc.) |
| Nasdaq.com 13F | Free | Basic search by quarter |
| Finviz – 13F | Free | Aggregates by ticker (e.g., see which funds own AAPL) |
| AlphaVantage API | Free tier | Programmatic access |
Some managers (e.g., Tiger Global, some hedge funds) regularly request confidential treatment for new positions. The SEC may grant up to one year of non‑disclosure if revealing the position would harm the manager's strategy. When the confidentiality expires, an amended 13F-HR/A appears.
Trader takeaway: If you see a manager consistently requesting confidential treatment, their new buys are likely small caps or activist plays. After the expiry, the revealed position may already be stale.