SEC 13F Hedge Fund Holdings Tracker 🐋

See exactly what the smart money owns — straight from official SEC 13F filings.

Every institutional investment manager with over $100 million in US equities must file a Form 13F each quarter, disclosing their holdings. This Actor turns those filings into clean, structured data: enter a fund name, get every position ranked by value, with each holding's share of the portfolio.

Track Berkshire Hathaway, Scion Asset Management, Pershing Square, Bridgewater, Renaissance — anyone who files a 13F.

Data comes exclusively from SEC EDGAR — public, government-mandated disclosures. No login, no proxy, no gray areas.

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What you can do with it

• 🐋 Copy the smart money — see what famous investors are buying and holding.
• 📊 Build portfolio dashboards — every position, ranked, with portfolio weights.
• 🔔 Track changes quarter to quarter — pull multiple reports and diff them.
• 🧮 Feed models & research — a normalized holdings dataset with CUSIPs and values.
• 📰 Power newsletters — "What Warren Buffett bought this quarter" in one run.

Features

• ✅ Name → filer resolution — type Berkshire Hathaway, not a CIK number.
• ✅ Ranked holdings — every position sorted by value, with a rank and portfolio_percent.
• ✅ Top-N filter — get just the top 10 holdings, or the whole book.
• ✅ Multiple quarters — pull the latest report or the last several.
• ✅ Rich output — issuer, CUSIP, value, shares, put/call, voting authority, filing link.
• ✅ Low-maintenance & cheap — official SEC endpoints, no proxy, no browser.

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Input

Field	Description
Fund / manager names	e.g. Berkshire Hathaway, Scion Asset Management.
Manager CIKs	SEC CIK numbers for exact targeting (optional).
Reports per manager	How many recent 13F reports to pull (1 = latest quarter).
Top N holdings only	Only the largest positions, e.g. 10.
Minimum position value (USD)	Drop positions below this value.
Include amendments	Include 13F-HR/A amended reports.
Max results	Cap the number of holdings returned.
Contact email	Sent to SEC in the User-Agent, per their fair-access policy.

Example — Buffett's latest top 10

{
  "managerNames": ["Berkshire Hathaway"],
  "maxReportsPerManager": 1,
  "topHoldings": 10,
  "contactEmail": "you@example.com"
}

Example — full books of several funds, last two quarters

{
  "managerNames": ["Scion Asset Management", "Pershing Square Capital", "Appaloosa"],
  "maxReportsPerManager": 2,
  "minValueUsd": 1000000,
  "contactEmail": "you@example.com"
}

Output

Each row is a single holding:

{
  "manager_name": "BERKSHIRE HATHAWAY INC",
  "manager_cik": "1067983",
  "report_date": "2026-03-31",
  "filing_date": "2026-05-15",
  "form_type": "13F-HR",
  "issuer_name": "APPLE INC",
  "title_of_class": "COM",
  "cusip": "037833100",
  "value_usd": 174300000000.0,
  "portfolio_percent": 41.2,
  "rank": 1,
  "shares_or_principal": 905560000.0,
  "shares_type": "SH",
  "put_call": "",
  "investment_discretion": "SOLE",
  "voting_sole": 905560000.0,
  "voting_shared": 0.0,
  "voting_none": 0.0,
  "accession_number": "0000950123-26-005678",
  "filing_url": "https://www.sec.gov/Archives/edgar/data/1067983/000095012326005678/0000950123-26-005678-index.htm"
}

Run it on a schedule

13F filings drop quarterly (within 45 days of quarter end). Set the Actor to run on a schedule shortly after each 13F deadline (mid-Feb, mid-May, mid-Aug, mid-Nov) to auto-capture the newest holdings, and connect a Slack / email / Google Sheets integration for alerts.

Notes & limitations

• Uses SEC EDGAR's official public endpoints; respects SEC's fair-access rate limits.
• 13F reports long positions in US-listed equities and options only — no shorts, no cash, no foreign-listed holdings. This is a limitation of the filing itself, not the Actor.
• Filings are disclosed with up to a 45-day lag after quarter end (SEC rule).
• Position values are reported by the filer; filings from 2023 onward are in whole US dollars.
• This is factual public data, not investment advice. Do your own research.

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Keywords

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