# SEC 13F Hedge Fund Holdings Lookup

> 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.

## Facts

- Endpoint: POST https://x402-agent-api.onrender.com/api/v1/sec-fund-holdings?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sec-13f-hedge-fund-holdings-lookup-eed30c00
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iBq7mcYbnZLbwTNWsPHci

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sec-13f-hedge-fund-holdings-lookup-eed30c00 -d '<json body>'
```

Example prompt: Pull Berkshire Hathaway's latest 13F holdings from SEC EDGAR — show me the top 50 positions with their values, share counts, and portfolio weights, plus any new buys, sold-out positions, and the biggest adds and cuts versus last quarter.

## When to prefer this

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.

## Known failure modes

- 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

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "cik": {
   "type": "string",
   "pattern": "^\\d{1,10}$",
   "description": "The manager's SEC CIK, e.g. 1067983 (Berkshire Hathaway)."
  },
  "via": {
   "type": "string",
   "maxLength": 64,
   "description": "Optional: the tool whose next_calls suggested this call (filled in for you)."
  },
  "fund": {
   "type": "string",
   "maxLength": 120,
   "minLength": 2,
   "description": "The investment manager or investor, e.g. \"Berkshire Hathaway\", \"Bridgewater\", \"Cathie Wood\" or \"Michael Burry\". Use this or `cik`."
  },
  "limit": {
   "type": "integer",
   "default": 25,
   "maximum": 200,
   "minimum": 1,
   "description": "How many positions to list, largest first (1-200, default 25). Totals and changes always cover the whole portfolio."
  },
  "period": {
   "type": "string",
   "pattern": "^(?:latest|\\d{4}-\\d{2}-\\d{2}|\\d{4}-?Q[1-4])$",
   "description": "Which quarter: \"latest\" (default), a quarter-end date such as 2026-06-30, or 2026-Q2."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sec-13f-hedge-fund-holdings-lookup-eed30c00/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent-api.onrender.com](https://www.zero.xyz/host/x402-agent-api.onrender.com/llms.txt)