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Signal Nodus – Institutional Holders Lookup
x402
Signal Nodus – Institutional Holders Lookup is a paid API for AI agents from api.signalnodus.ai, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).
Returns the list of institutional reporting managers (13F filers) who hold a given company's stock, sourced from SEC filings and pinned to accession numbers.
Price / call$0.05
Success—
StatusUnknown
How this service works
Signal Nodus: year-over-year diffs of SEC filing sections, pinned to accession numbers. The diff is the product; raw data is the on-ramp.
Output
A JSON object containing the company name, the total count of reporting managers (e.g. 1253 for NVIDIA), and an array of holder objects each with the manager's CIK, their name, and the date they filed with the SEC — all traceable back to specific SEC accession numbers.
Example use cases
Institutional ownership research for a stock
“Can you pull up all the institutional 13F filers that reported holding NVIDIA Corp shares? I want to see the manager names, their CIKs, and the dates they filed.”
Hedge fund exposure screening
“Which institutional managers reported holding Tesla stock in their latest SEC 13F filings? I'm trying to figure out how many funds have exposure.”
Competitive investor base analysis
“Show me all the reporting managers that hold Microsoft Corp according to SEC filings — I want to compare its institutional ownership base to see who the major players are.”
Technical details
Endpoint
GEThttps://api.signalnodus.ai/v1/whoholdsWhen to prefer
Choose this endpoint when you need SEC-sourced, accession-number-pinned institutional ownership data for a specific public company, particularly when auditability and traceability back to official 13F filings matter. Prefer this over generic financial data APIs when you need the raw institutional holder roster with CIK identifiers and exact filing dates rather than aggregated ownership percentages.
Side effects
- Company name not recognized or no matching SEC filings found — returns empty holders array
- Rate limiting or payment failure via x402 — HTTP 402 response requiring USDC payment
- Stale data if SEC EDGAR has not yet processed the latest quarterly 13F filings
- Ambiguous company name matching multiple entities — may return incorrect company
- API unavailable or upstream SEC data ingestion lag — HTTP 5xx error
Output
Schema · Response
{
"type": "json",
"example": {
"company": "NVIDIA CORP",
"holders": [
{
"cik": "0002112239",
"filedAt": "2026-08-12",
"manager": "McLaughlin Asset Management, Inc."
}
],
"totalReportingManagers": 1253
}
}Tags
x402
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