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SEC 13F-HR Institutional Fund Holdings by CIK
SEC 13F-HR Institutional Fund Holdings by CIK is a paid API for AI agents from agents.x402stock.xyz, paid per call via MPP, $0.03/call, status unknown (last checked 2026-10-10).
Returns the latest 13F-HR institutional holdings for a fund or investment manager identified by SEC CIK, including all reported positions with issuer, CUSIP, market value, share count, option type, and voting authority.
Price / call$0.03
Success—
StatusUnknown
How this service works
Institutional 13F holdings for a fund by CIK: every position, value, and shares
Output
A JSON object containing the filer name, CIK, filing metadata (accession number, filing date, report date, form type), total portfolio value, total position count, and an array of holdings sorted by market value descending. Each holding includes issuer name, title of class, CUSIP, market value in thousands, share count, share type, put/call flag, investment discretion classification, and sole/shared/none voting authority breakdowns.
Example use cases
Reverse-engineer a hedge fund's portfolio
“What are the top 50 holdings in the latest 13F filing for Citadel Advisors? Their SEC CIK is 0001423053 — I want issuer names, share counts, and market values.”
Track a fund's options exposure
“Look up the most recent 13F-HR for the fund with CIK 0001061768 and show me only the positions where they've reported put or call options.”
Benchmark a fund's total AUM from filings
“Get the latest 13F-HR for Renaissance Technologies — CIK 0001037389 — and tell me their total reported portfolio value and how many positions they hold.”
Technical details
Endpoint
GEThttps://agents.x402stock.xyz/api/v1/fund-holdings/{cik}?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured, machine-readable 13F-HR institutional holdings data for a specific fund or investment manager identified by SEC CIK. It is ideal for portfolio analysis, competitive intelligence, or tracking large institutional positions with full detail (CUSIP, voting authority, options). Prefer this over manually parsing SEC EDGAR HTML filings or when you need the data sorted and aggregated with total portfolio value already computed.
Side effects
- Invalid or non-existent CIK returns an error or empty result
- Fund has not filed a 13F-HR (not a qualifying institutional investment manager) — no data returned
- CIK belongs to a company filer rather than an investment manager — filing may not exist
- limit parameter out of range (must be > 0 and ≤ 1000) returns validation error
- SEC EDGAR upstream unavailability may cause fetch failure
- Payment failure (insufficient USDC balance) blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| cikrequired | string | SEC Central Index Key (CIK) of the fund or investment manager. |
| limit | integer |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| cikrequired | string | |
| datarequired | object | |
| as_ofrequired | string | |
| filerrequired | string | |
| sourcerequired | string |
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