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SEC 13F Hedge Fund Holdings Lookup
x402
SEC 13F Hedge Fund Holdings Lookup is a paid API for AI agents from x402-agent-api.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).
Returns the latest 13F portfolio holdings of any hedge fund or institutional investor from SEC EDGAR, including position values, shares, weights, and quarter-over-quarter changes with a plain-English summary.
Price / call$0.01
Success—
StatusUnknown
How this service works
13F holdings of any hedge fund or investor (Berkshire/Buffett, Bridgewater, Burry, Cathie Wood, Citadel, Ackman...): latest portfolio with value, shares and % per position, plus new buys, sold-out positions and biggest adds/cuts vs last quarter, with a plain-English summary. SEC EDGAR. $0.01 USDC per call.
Output
Returns a structured list of portfolio positions (up to the requested limit, largest by value first) each with share count, market value, and portfolio weight percentage; plus lists of new buys, fully exited positions, biggest position increases, and biggest cuts vs. the prior quarter — accompanied by a plain-English narrative summary of the portfolio and its changes.
Example use cases
Tracking Buffett's latest portfolio moves
“What did Warren Buffett buy and sell in Berkshire Hathaway's most recent quarter? Show me the top 30 positions and highlight any new buys or complete exits.”
Researching Burry's current bets
“What stocks does Michael Burry currently hold according to his latest 13F filing? I want to see all positions with their values and how they changed from the previous quarter.”
Monitoring Cathie Wood's ARK adds and cuts
“Show me Cathie Wood's latest 13F portfolio — top 25 positions — and tell me what she added most aggressively and what she's been cutting compared to last quarter.”
Technical details
Endpoint
POSThttps://x402-agent-api.onrender.com/api/v1/sec-fund-holdings?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need structured, parsed 13F holdings data for a specific institutional investor without manually parsing SEC EDGAR filings. It is ideal for quickly surfacing portfolio composition, quarter-over-quarter changes, and plain-English summaries for any major hedge fund or institutional manager. Prefer this over raw EDGAR access when you need clean, actionable output including change analysis rather than raw XML/SGML filing data.
Side effects
- Fund name not found or ambiguous — returns error suggesting use of CIK instead
- CIK not recognized by SEC EDGAR — returns not-found error
- No 13F filing available for the requested period — returns period-not-found error
- Fund has not filed a 13F (e.g. non-US or below $100M threshold) — returns filing-not-available error
- SEC EDGAR temporarily unavailable — returns upstream timeout error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| cik | string | The manager's SEC CIK, e.g. 1067983 (Berkshire Hathaway). |
| via | string | Optional: the tool whose next_calls suggested this call (filled in for you). |
| fund | string | The investment manager or investor, e.g. "Berkshire Hathaway", "Bridgewater", "Cathie Wood" or "Michael Burry". Use this or `cik`. |
| limit | integer | How many positions to list, largest first (1-200, default 25). Totals and changes always cover the whole portfolio. |
| period | string | Which quarter: "latest" (default), a quarter-end date such as 2026-06-30, or 2026-Q2. |
Tags
x402
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