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Market Intelligence API – SEC 13D/13G Ownership Filings
x402
Market Intelligence API – SEC 13D/13G Ownership Filings is a paid API for AI agents from api.marketintelligenceapi.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).
Returns SEC Schedule 13D (activist) and 13G (passive) filings for a US stock, showing holders above 5% with their names, types, and percent of class over a configurable lookback window.
Price / call$0.01
Success—
StatusUnknown
How this service works
Activist investors and large holders of a US stock: SEC Schedule 13D (activist) and 13G (passive) filings of holders above 5% over days=1-1095, with holder names, type and percent of class. Use to find who owns 5% or more.
Output
A JSON list of SEC Schedule 13D and 13G filers for the requested ticker, including each holder's name, holder type (e.g. activist hedge fund, institutional investor), percent of class held, filing type (13D or 13G), and filing date — covering all filers above 5% within the specified lookback period (1–1095 days).
Example use cases
Pre-trade activist stake check
“Before I buy into Apple, can you pull all the SEC 13D and 13G filings for AAPL from the past 180 days? I want to know if any activist investors or large passive funds have recently crossed the 5% threshold.”
Earnings season ownership review
“Going into earnings season I want to understand who the big holders of JPMorgan are — show me all the Schedule 13D and 13G filers for JPM over the past year, with their holder type and percent of class.”
Monitoring activist accumulation
“I've heard rumors that an activist might be building a position in Twitter. Can you check the SEC 13D filings for TWTR over the last 90 days and tell me who the filers are and what stake they hold?”
Technical details
Endpoint
GEThttps://api.marketintelligenceapi.com/api/v1/sec/ownership/:symbol?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative SEC-sourced data on who owns more than 5% of a US-listed company, especially to identify activist investors (13D) versus passive large holders (13G). Prefer this over social sentiment or news-based ownership estimates when regulatory accuracy and filing provenance matter — e.g. before a trade, merger analysis, or activist risk assessment.
Side effects
- 404 if the ticker symbol is not found or has no SEC filings (not charged)
- Invalid or non-US ticker returns an error
- Days parameter outside 1–1095 range is rejected
- No filings returned if no holders exceeded 5% in the lookback window
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Tags
x402
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