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AnswerPool Top 13F Institutional Managers
x402
AnswerPool Top 13F Institutional Managers is a paid API for AI agents from answerpool.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Ranks institutional investment managers by total reported 13F value for the latest quarter, optionally filtered by state, returning CIK, name, positions count, and dollar totals.
Price / call$0.005
Success—
StatusUnknown
How this service works
AnswerPool turns SEC EDGAR, the Federal Register, USAspending, NIH, BLS and OpenAlex into structured JSON answers that AI agents and developers fetch in one call. 69 endpoints free, no account; derived analyses $0.02–$0.05 per call by card credits or USDC (x402). MCP server, full provenance.
Output
Returns a JSON object with the reporting period, count of managers returned, list of top institutional managers each containing their CIK, state, period, accession number, manager name, number of holdings, and total portfolio value in USD, plus available historical periods.
Example use cases
Ranking largest institutional investors nationally
“Who are the top 20 institutional managers by total 13F reported value this quarter? I want their CIK, name, number of positions, and total dollar value.”
State-level institutional investor analysis
“List the biggest institutional investment managers headquartered in New York based on their latest 13F filings — rank them by total reported portfolio value.”
Identifying 13F filers for competitive intelligence
“I'm researching the largest asset managers in California — can you pull the top institutional managers there from SEC 13F data, with their holdings count and total AUM?”
Technical details
Endpoint
POSThttps://answerpool.io/v1/sec/13f/topWhen to prefer
Use this endpoint when you need a ranked leaderboard of institutional managers by 13F AUM — especially useful for competitive benchmarking, state-level investor analysis, or identifying the largest equity holders from primary SEC filing data in a single fast call. Prefer over manual EDGAR searches or building your own aggregation from raw 13F XML.
Side effects
- Invalid or unsupported state code returns empty or error response
- No 13F data available for requested period returns empty managers list
- Rate limiting or payment failure with x402 protocol returns 402 status
- Stale data if latest quarter filings not yet processed
- Unrecognized query parameters may be silently ignored
Output
Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-08-31T17:00:00Z",
"count": 1,
"period": "2025-12-31",
"managers": [
{
"cik": "0001566307",
"state": "WI",
"period": "2025-12-31",
"accession": "0001566307-26-000071",
"manager_name": "Ramiah Investment Group",
"holdings_count": 35,
"value_total_usd": 14970455
}
],
"periods_held": [
"2025-12-31",
"2025-09-30"
]
}
}Tags
x402
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