{"uid":"cap_TLGBx0iph5aHT-DOwYwt5","slug":"answerpool-13f-crowding-2bd4d5ad","name":"AnswerPool 13F Crowding","description":"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–$0.05 per call by card credits or USDC (x402). MCP server, full provenance.","url":"https://answerpool.io/v1/sec/13f/crowding","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","title":"CrowdingIn","required":["issuer"],"properties":{"issuer":{"type":"string","title":"Issuer","maxLength":80,"minLength":2,"description":"Issuer name prefix exactly as managers file it, case-insensitive (e.g. NVIDIA). A prefix with no recorded 13F holdings is an error."},"quarters":{"type":"integer","title":"Quarters","default":6,"maximum":12,"minimum":2,"description":"How many of the most recent 13F report periods (calendar quarter ends) to trend over. Default 6; silently capped by the quarters currently indexed."}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"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}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SbilS8qxvmnPXVR1gqcDT","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"Show me the institutional 13F crowding trend for NVIDIA over the last 8 quarters — how many fund managers hold it, whether that number is growing, and which new managers entered most recently.","exampleUseCases":[{"title":"Institutional conviction check before earnings","prompt":"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."},{"title":"Screening for under-owned emerging tech stocks","prompt":"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."},{"title":"Monitoring crowding risk in a concentrated position","prompt":"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?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:38:40.073Z","isFirstParty":false}