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AnswerPool 13F Crowding
x402
AnswerPool 13F Crowding is a paid API for AI agents from answerpool.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Returns a multi-quarter trend of institutional 13F holder counts, share totals, and AUM for a named issuer, with entering/exiting manager lists and a directional trend label.
Price / call$0.05
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
A JSON object containing a time series of quarterly snapshots (period, holder count, total shares, total USD value, quarter-over-quarter changes), a trend label ('building', 'unwinding', etc.), the matched issuer name, lists of newly entering and exiting managers for the most recent period, and a data provenance note with disclaimer. Covers only managers above the $100M SEC threshold with a ~45-day filing lag.
Example use cases
Institutional conviction check before earnings
“Before NVIDIA's next earnings, I want to know if institutional 13F holders have been building or reducing positions over the last 6 quarters — show me the holder count trend, total shares, and any managers who recently exited.”
Screening for under-owned emerging tech stocks
“Pull the 13F crowding trend for Palantir over 8 quarters — I want to see if institutional breadth is expanding and which new fund managers started filing positions recently.”
Monitoring crowding risk in a concentrated position
“I'm worried about crowding risk in my Tesla position. Can you get the last 12 quarters of 13F holder data — total institutional shares, how many managers hold it, and whether the trend is building or unwinding?”
Technical details
Endpoint
GEThttps://answerpool.io/v1/sec/13f/crowdingWhen to prefer
Use this endpoint when you need a longitudinal, multi-quarter view of institutional 13F ownership breadth for a specific public company — including holder counts, aggregate share totals, AUM, and manager entry/exit signals — all derived from SEC EDGAR and returned as structured JSON in a single call. Prefer this over raw EDGAR queries when you need deduplication of amendments, trend labeling, and new/exited manager lists pre-computed. Not suitable for real-time ownership data (13F has a ~45-day lag) or for tracking ownership below the $100M manager threshold.
Side effects
- Issuer prefix matches no 13F filers — returns error indicating no recorded holdings for that prefix
- Quarters parameter exceeds indexed history — silently capped to available data
- Ambiguous issuer prefix matches multiple entities — may return unexpected issuer
- Rate limit or payment failure for paid tier — 402 response requiring credit or USDC payment
- Misspelled or non-standard issuer name format returns empty or mismatched result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Holder counts deduplicate amendments to one filing per manager per quarter. 13F is quarterly with the SEC's ~45-day lag, and covers only managers above the $100M threshold, so this is institutional breadth, not total ownership.",
"as_of": "2026-09-03T15:30:00Z",
"trend": "building",
"series": [
{
"period": "2025-12-31",
"holders": 412,
"total_shares": 640000000,
"holders_change": null,
"total_value_usd": 91200000000,
"value_change_pct": null
},
{
"period": "2026-03-31",
"holders": 437,
"total_shares": 662000000,
"holders_change": 25,
"total_value_usd": 99400000000,
"value_change_pct": 8.99
}
],
"disclaimer": "From SEC Form 13F filings (public domain), reported quarterly with a filing lag; not investment advice.",
"issuer_query": "NVIDIA",
"new_managers": [
"Ramiah Capital Group"
],
"issuer_matched": "NVIDIA CORP",
"exited_managers": [],
"periods_covered": 2
}
}Tags
x402
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