SEC 13F Holdings Tracker — What Berkshire, Bridgewater, and Citadel Own

The cleanest way to pull institutional investor holdings from SEC Form 13F-HR filings. Every position. Every quarter. Every fund managing $100M+. Free SEC EDGAR API. No key required.

This is the data layer that powers WhaleWisdom, Insider Monkey, HedgeFollow, Stockzoa, and every "what does Buffett own?" article you've ever read. We pull directly from SEC EDGAR, parse the raw Form 13F-HR XML, and return one clean row per position with full metadata — including option calls, option puts, and CUSIP identifiers for downstream ticker lookup.

What you actually get (verified on real filings)

Tested against Q4 2025 filings from three of the world's largest institutional investors:

Berkshire Hathaway (Warren Buffett) — 110 positions extracted

Issuer	Shares	Value
ALLY FINL INC	12,719,675	$576,074,081
... 109 more positions including Apple, Coca-Cola, American Express, Occidental Petroleum, Chevron, Kraft Heinz, Moody's, etc.

Bridgewater Associates (Ray Dalio) — 1,040 positions, 43 over $100M

Issuer	Shares	Value
ALPHABET INC	1,590,826	$497,928,538
AMAZON COM INC	1,948,254	$449,695,988
ADOBE INC	1,275,055	$446,256,499
ADVANCED MICRO DEVICES INC	1,656,527	$354,761,822
ALTRIA GROUP INC	3,276,751	$188,937,463

Citadel Advisors (Ken Griffin) — 15,403 positions, filtered to NVIDIA

Position Type	Shares	Value
NVIDIA COM (direct)	11,479,330	$2,140,895,045
NVIDIA COM (direct)	10,080,093	$1,879,937,345
NVIDIA CALL options	77,385,900	$14,432,470,350
NVIDIA PUT options	54,984,100	$10,254,534,650
NVIDIA CALL options	552,400	$103,022,600
NVIDIA PUT options	64,200	$11,973,300

$28.8 billion of NVIDIA exposure at ONE hedge fund — this is the kind of data institutional investors pay thousands per month for.

Each row includes:

• Filer identity: legal name, SEC CIK, filing date, period of report
• Position identity: issuer name, title of class (COM, CL A COM, CALL, PUT, etc.), CUSIP, FIGI (Bloomberg identifier)
• Position size: shares, market value in USD (as of period end)
• Discretion: SOLE (sole discretion), DFND (defined), SHRD (shared), NONE
• Voting authority: sole voting, shared voting, no voting authority breakdown
• Option flags: isCallOption, isPutOption (yes, 13F filings disclose options positions)
• Direct link to the original SEC EDGAR filing

Why use this

Form 13F is the single most-monetized SEC dataset in existence. Every quarter, ~5,000 institutional investors managing $100M+ in equities must file a complete list of their US equity holdings within 45 days of quarter end. This creates a transparency window that the entire finance industry exploits:

• Retail traders follow Buffett, Burry, Ackman, Einhorn to copy their trades
• Hedge fund LPs monitor performance and position turnover at funds they're invested in
• Quant funds run "follow the smart money" strategies based on 13F crowd-sourcing
• M&A advisory firms identify which institutions would need to be approached for deal approval
• Financial journalists write quarterly "what hedge funds bought" and "what Berkshire sold" articles
• Financial advisors show clients what institutional money is doing
• Activist investors identify fellow large shareholders for proxy campaigns
• Short sellers spot crowded longs that might unwind
• Index providers track institutional ownership concentration

Commercial alternatives and their pricing:

• WhaleWisdom: $99-499/month (the market leader)
• HedgeFollow: $49-199/month
• Insider Monkey: free tier + paid research
• Stockzoa: $20-50/month
• 13F.info: free reference site
• Bloomberg Terminal (includes 13F data): $25,000+/year
• FactSet: $12,000+/year
• S&P Global Market Intelligence: $10,000+/year

This actor delivers the same raw data that powers ALL of those products, via Apify's per-event pricing.

Named filers supported

You can reference these major hedge funds and investors by short name (no CIK lookup needed):

• berkshire → Berkshire Hathaway Inc (Warren Buffett)
• bridgewater → Bridgewater Associates LP (Ray Dalio)
• citadel → Citadel Advisors LLC (Ken Griffin)
• renaissance → Renaissance Technologies LLC (Jim Simons)
• soros → Soros Fund Management LLC (George Soros)
• icahn → Carl C. Icahn
• tepper / appaloosa → Appaloosa LP (David Tepper)
• pershing → Pershing Square (Bill Ackman)
• point72 → Point72 Asset Management (Steve Cohen)
• two sigma → Two Sigma Investments
• d1 capital → D1 Capital Partners
• tiger global → Tiger Global Management
• coatue → Coatue Management
• jana partners → JANA Partners
• third point → Third Point (Dan Loeb)
• paulson → Paulson & Co
• baker bros → Baker Bros Advisors (biotech-focused)

Or pass any 10-digit CIK to track any other institutional filer — there are ~5,000 filers total.

How to use

1. Click Try for free (or Start)
2. Add filers to filers as short names or CIKs: ["berkshire", "bridgewater", "citadel"]
3. Set filingsPerFiler — how many recent filings to pull (1 = latest quarter, 4 = full year, 8 = 2 years for trend analysis)
4. Optionally set minPositionValue — skip small positions (e.g. 100000000 for $100M+ only)
5. Optionally set tickerFilter — substring match on issuer name (e.g. "NVIDIA" or "APPLE")
6. Click Start

Output

{
    "filerName": "Berkshire Hathaway Inc",
    "filerCik": "0001067983",
    "periodOfReport": "2025-12-31",
    "filingDate": "2026-02-17",
    "accessionNumber": "0001193125-26-054580",
    "issuerName": "ALLY FINL INC",
    "titleOfClass": "COM",
    "cusip": "02005N100",
    "figi": null,
    "shares": 12719675,
    "sharesType": "SH",
    "marketValueUsd": 576074081,
    "investmentDiscretion": "DFND",
    "otherManager": "4",
    "votingAuthoritySole": 12719675,
    "votingAuthorityShared": 0,
    "votingAuthorityNone": 0,
    "votingAuthorityShares": 12719675,
    "isCallOption": false,
    "isPutOption": false,
    "filingUrl": "https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001067983&type=13F-HR&dateb=&owner=include&count=10&accession_number=0001193125-26-054580",
    "extractedAt": "2026-04-16T00:30:00.000Z"
}

Pricing

Pay-per-event — the right model for data that varies wildly in volume:

• Actor start: $0.05 per run
• Per holding extracted: $0.005 per position pushed to dataset

Example costs:

• Pull Berkshire's latest 13F (~110 positions) → $0.60
• Pull top 10 hedge funds' latest filings (~5,000 total positions) → $25.05
• Track a single fund's positions in a specific stock (filtered) → $0.05-$0.50
• Full quarterly pull of ALL 5,000+ 13F filers (~5 million positions) → ~$25,000 (cheaper than a single Bloomberg Terminal seat)
• Daily spot-check of 20 famous investors → ~$6/month

For comparison: WhaleWisdom's $99/month plan limits you to the top 100 hedge funds. Our actor pulls any fund for $0.005 per position.

Free Apify tier members get $5/month in platform credits, which covers ~1,000 positions per month.

Honest limitations

• 45-day disclosure lag is on SEC's side, not ours. 13F filings must be filed within 45 days of quarter end, so December 31 data appears in February filings. This isn't real-time — it's quarterly with a 45-day delay. Still, it's what the entire industry uses.
• No short positions. Form 13F only covers long equity positions. Short positions are NOT disclosed (a major limitation for tracking long/short funds).
• Cover-page-only filings (13F-NT) are excluded. Some filers rely on another filer's 13F-HR to report their positions jointly — we only parse 13F-HR filings that contain actual positions.
• Multiple lots per position. When a fund holds the same security across multiple sub-managers, you'll see multiple rows with the same CUSIP. Group by CUSIP in your downstream pipeline to get total position.
• No CUSIP → ticker mapping. We return the CUSIP verbatim from the SEC. For ticker lookup, pipe into a CUSIP-to-ticker service (the OpenFIGI API is free).
• Older filings may use the legacy TEXT format (before ~2013). We only parse the modern XML format. For most filers this covers everything from 2013 onward.

Tips for extracting alpha

• Track new positions by diffing consecutive quarters (store both runs, join on CUSIP, find rows that appeared in Q2 but not Q1)
• Track position changes (Buffett added 5M shares of APPLE → bullish signal for the stock)
• Cluster analysis: when 5+ hedge funds all initiate positions in the same stock in the same quarter, that's a "hedge fund consensus" signal worth investigating
• Sector concentration: aggregate positions by sector to spot theme rotations (hedge funds rotating out of tech into energy, etc.)
• Combine with the SEC Form 4 Insider Trades actor — when insiders buy (code P) AND hedge funds increase their positions in the same quarter, that's a double-confirmation bullish signal
• Options positioning: the isCallOption / isPutOption flags reveal hedge fund directional bets on volatility and direction — Citadel's $28B NVIDIA exposure is a real example
• Small-cap signals: hedge fund 13F filings for small caps (market cap <$1B) are much more actionable than large cap positions because of lower crowding

Source

This actor uses the official SEC EDGAR REST API for filing discovery (https://data.sec.gov/submissions/CIK{cik}.json) and the SEC Archives for raw 13F-HR information table XML. Both are free, public, require no authentication, and are maintained by the SEC itself.

SEC requires a User-Agent header (we use MCPHubResearch contact@mcphub.dev) and limits to 10 requests per second per IP. We comply automatically.

License

This actor is MIT licensed. SEC filing data is in the public domain (works of the US federal government are not subject to copyright). You may use the extracted 13F holdings data for any purpose, including commercial trading and research, with no restrictions.

Disclaimer

This actor is for research and information purposes only. Following hedge fund positions is NOT a guaranteed trading strategy — by the time 13F data is public, the fund may have already exited the position. Do not rely on 13F data alone for trading decisions. Consult a licensed financial advisor.