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2s.io SEC 13F Institutional Holdings Lookup
x402
2s.io SEC 13F Institutional Holdings Lookup is a paid API for AI agents from 2s.io, paid per call via x402, $0.0072/call, status unknown (last checked 2026-09-14).
Returns parsed institutional holdings from a 13F-HR filing for a given investment manager CIK, sorted by market value descending
Price / call$0.0072
Success—
StatusUnknown
How this service works
Parsed institutional holdings from a 13F-HR filing. By investment-manager CIK (e.g. 1067983 = Berkshire Hathaway). Returns each holding's nameOfIssuer, cusip, market value (whole USD per the modern Form 13F convention), shares/principal amount + type, putCall flag for options, and voting authority (sole/shared/none). Sorted by value descending. Pass formType for amendments (13F-HR/A) or non-filings (13F-NT). Backed by SEC.gov; underlying 13F filings are public records.
Output
A list of holdings sorted by market value descending, each containing: nameOfIssuer, CUSIP, market value in whole USD, shares or principal amount with type, put/call flag for options positions, and voting authority breakdown (sole/shared/none). Limited to the requested number of records (default 25, max 200).
Example use cases
Example prompt
“Pull Berkshire Hathaway's top 50 institutional holdings from their latest 13F-HR filing — their CIK is 1067983 — and show me each position's issuer name, CUSIP, market value, and share count.”
Technical details
Endpoint
GEThttps://2s.io/api/finance/thirteen-fWhen to prefer
Use this endpoint when you need structured, parsed institutional holdings data from SEC 13F filings without having to scrape or parse raw EDGAR documents. Ideal for researching what major funds or institutions hold, analyzing portfolio composition, or building investment research tools. Best when you have the manager's CIK and need clean, machine-readable holding records including CUSIP, market value, and voting details.
Side effects
- Invalid or non-existent CIK returns empty results or 404
- CIK with no 13F filings on record returns empty holdings list
- Requesting 13F-HR/A when no amendment exists returns no data
- Limit out of range (>200 or <1) may return validation error
- SEC EDGAR backend unavailability causes timeout or 5xx error
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"limit": 25,
"formType": "13F-HR",
"managerCik": "1067983"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"data": {
"ok": true,
"meta": {
"cik": "0001067983",
"query": {
"limit": 25,
"formType": "13F-HR",
"managerCik": "1067983"
},
"filing": {
"form": "13F-HR",
"filingDate": "2026-05-15",
"documentUrl": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526226661/xslForm13F_X02/primary_doc.xml",
"infoTableUrl": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526226661/53405.xml",
"periodOfReport": "2026-03-31",
"accessionNumber": "0001193125-26-226661"
},
"managerName": "BERKSHIRE HATHAWAY INC",
"totalValueUsd": 263095703570
},
"items": [
{
"cusip": "025816109",
"putCall": null,
"valueUsd": 45087984892,
"nameOfIssuer": "AMERICAN EXPRESS CO",
"titleOfClass": "COM",
"sharesOrPrinAmt": 149061045,
"votingAuthority": {
"none": 0,
"sole": 149061045,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "191216100",
"putCall": null,
"valueUsd": 21501063540,
"nameOfIssuer": "COCA COLA CO",
"titleOfClass": "COM",
"sharesOrPrinAmt": 282722729,
"votingAuthority": {
"none": 0,
"sole": 282722729,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "037833100",
"putCall": null,
"valueUsd": 20471924668,
"nameOfIssuer": "APPLE INC",
"titleOfClass": "COM",
"sharesOrPrinAmt": 80664820,
"votingAuthority": {
"none": 0,
"sole": 80664820,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "674599105",
"putCall": null,
"valueUsd": 17221193015,
"nameOfIssuer": "OCCIDENTAL PETE CORP",
"titleOfClass": "COM",
"sharesOrPrinAmt": 264941431,
"votingAuthority": {
"none": 0,
"sole": 264941431,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "037833100",
"putCall": null,
"valueUsd": 15618994925,
"nameOfIssuer": "APPLE INC",
"titleOfClass": "COM",
"sharesOrPrinAmt": 61542988,
"votingAuthority": {
"none": 0,
"sole": 61542988,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "060505104",
"putCall": null,
"valueUsd": 15151500000,
"nameOfIssuer": "BANK AMERICA CORP",
"titleOfClass": "COM",
"sharesOrPrinAmt": 310800000,
"votingAuthority": {
"none": 0,
"sole": 310800000,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "166764100",
"putCall": null,
"valueUsd": 12052286868,
"nameOfIssuer": "CHEVRON CORPORATION",
"titleOfClass": "COM",
"sharesOrPrinAmt": 58251749,
"votingAuthority": {
"none": 0,
"sole": 58251749,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "02079K305",
"putCall": null,
"valueUsd": 11871367661,
"nameOfIssuer": "ALPHABET INC",
"titleOfClass": "CAP STK CL A",
"sharesOrPrinAmt": 41283098,
"votingAuthority": {
"none": 0,
"sole": 41283098,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "H1467J104",
"putCall": null,
"valueUsd": 11162836215,
"nameOfIssuer": "CHUBB LTD SWITZ",
"titleOfClass": "COM",
"sharesOrPrinAmt": 34249183,
"votingAuthority": {
"none": 0,
"sole": 34249183,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "037833100",
"putCall": null,
"valueUsd": 8812603960,
"nameOfIssuer": "APPLE INC",
"titleOfClass": "COM",
"sharesOrPrinAmt": 34724000,
"votingAuthority": {
"none": 0,
"sole": 34724000,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "500754106",
"putCall": null,
"valueUsd": 7323527057,
"nameOfIssuer": "KRAFT HEINZ CO",
"titleOfClass": "COM",
"sharesOrPrinAmt": 325634818,
"votingAuthority": {
"none": 0,
"sole": 325634818,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "060505104",
"putCall": null,
"valueUsd": 6128850000,
"nameOfIssuer": "BANK AMERICA CORP",
"titleOfClass": "COM",
"sharesOrPrinAmt": 125720000,
"votingAuthority": {
"none": 0,
"sole": 125720000,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "191216100",
"putCall": null,
"valueUsd": 6105537360,
"nameOfIssuer": "COCA COLA CO",
"titleOfClass": "COM",
"sharesOrPrinAmt": 80283200,
"votingAuthority": {
"none": 0,
"sole": 80283200,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "615369105",
"putCall": null,
"valueUsd": 5507110938,
"nameOfIssuer": "MOODYS CORP",
"titleOfClass": "COM",
"sharesOrPrinAmt": 12623750,
"votingAuthority": {
"none": 0,
"sole": 12623750,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "615369105",
"putCall": null,
"valueUsd": 5223626090,
"nameOfIssuer": "MOODYS CORP",
"titleOfClass": "COM",
"sharesOrPrinAmt": 11973928,
"votingAuthority": {
"none": 0,
"sole": 11973928,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "037833100",
"putCall": null,
"valueUsd": 3941866280,
"nameOfIssuer": "APPLE INC",
"titleOfClass": "COM",
"sharesOrPrinAmt": 15532000,
"votingAuthority": {
"none": 0,
"sole": 15532000,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "037833100",
"putCall": null,
"valueUsd": 3672848880,
"nameOfIssuer": "APPLE INC",
"titleOfClass": "COM",
"sharesOrPrinAmt": 14472000,
"votingAuthority": {
"none": 0,
"sole": 14472000,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "166764100",
"putCall": null,
"valueUsd": 2788531578,
"nameOfIssuer": "CHEVRON CORPORATION",
"titleOfClass": "COM",
"sharesOrPrinAmt": 13477678,
"votingAuthority": {
"none": 0,
"sole": 13477678,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "247361702",
"putCall": null,
"valueUsd": 2646532635,
"nameOfIssuer": "DELTA AIR LINES INC",
"titleOfClass": "COM NEW",
"sharesOrPrinAmt": 39809456,
"votingAuthority": {
"none": 0,
"sole": 39809456,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "829933100",
"putCall": null,
"valueUsd": 2511616999,
"nameOfIssuer": "SIRIUSXM HOLDINGS INC",
"titleOfClass": "COMMON STOCK",
"sharesOrPrinAmt": 108822227,
"votingAuthority": {
"none": 0,
"sole": 108822227,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "23918K108",
"putCall": null,
"valueUsd": 2324865095,
"nameOfIssuer": "DAVITA INC",
"titleOfClass": "COM",
"sharesOrPrinAmt": 15126977,
"votingAuthority": {
"none": 0,
"sole": 15126977,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "23918K108",
"putCall": null,
"valueUsd": 2301293814,
"nameOfIssuer": "DAVITA INC",
"titleOfClass": "COM",
"sharesOrPrinAmt": 14973608,
"votingAuthority": {
"none": 0,
"sole": 14973608,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "92343E102",
"putCall": null,
"valueUsd": 1991085480,
"nameOfIssuer": "VERISIGN INC",
"titleOfClass": "COM",
"sharesOrPrinAmt": 8016933,
"votingAuthority": {
"none": 0,
"sole": 8016933,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "501044101",
"putCall": null,
"valueUsd": 1972335334,
"nameOfIssuer": "KROGER CO",
"titleOfClass": "COM",
"sharesOrPrinAmt": 27257260,
"votingAuthority": {
"none": 0,
"sole": 27257260,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
},
{
"cusip": "02079K305",
"putCall": null,
"valueUsd": 1926652000,
"nameOfIssuer": "ALPHABET INC",
"titleOfClass": "CAP STK CL A",
"sharesOrPrinAmt": 6700000,
"votingAuthority": {
"none": 0,
"sole": 6700000,
"shared": 0
},
"sharesOrPrinAmtType": "SH",
"investmentDiscretion": "DFND"
}
],
"total": 90,
"source": {
"url": "https://www.sec.gov/edgar",
"license": "Public domain (US government records)",
"provider": "SEC EDGAR — Form 13F-HR (institutional investment manager holdings)"
}
},
"meta": {
"cost": {
"usd": 0.0072,
"tier": 0
},
"caller": "x402",
"version": null,
"endpoint": "finance.thirteen-f",
"settlement": {
"txHash": "0x003cf557d24b69a134b092d7704c3153b972e2fad7181616f480eec1da0614b9",
"network": "eip155:8453",
"success": true
}
}
}Tags
x402
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