{"uid":"cap_7FXB2iTuUs32tB7-4tYbz","slug":"sec-13f-institutional-holdings-lookup-d98a04b2","name":"SEC 13F Institutional Holdings Lookup","description":"13F holdings for any SEC-filing manager (hedge funds, asset managers) by CIK or manager ticker: latest 13F top 20 positions, amendments applied (hourly snapshot, ~1h correction lag): issuer, CUSIP, value in whole USD, share/principal amount (SH/PRN), put/call flag, reported value, position count. Whale tracking from the primary source. 13F holdings, hedge fund positions, institutional ownership. Public-domain SEC EDGAR. $0.003 per call.","url":"https://x402.ottoai.services/institutional-holdings?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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"],"type":"string"},"queryParams":{"type":"object","required":["manager"],"properties":{"manager":{"type":"string","description":"SEC CIK number of the manager (e.g. 1067983 for Berkshire Hathaway), or the ticker of a publicly-listed manager (e.g. BLK)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["status"],"properties":{"data":{},"meta":{"type":"object"},"reason":{"type":"string","description":"status=unavailable only; every >=400 is UNCHARGED"},"status":{"enum":["success","unavailable"],"type":"string"}}}}}}},"responseSchema":{"type":"json","example":{"data":{"note":"The stock positions this investment manager reported to the SEC on its most recent quarterly Form 13F.","caveats":[{"code":"hourly_snapshot","plain":"This is an hourly snapshot of SEC filings, not a live feed. Freshness is in the response's generatedAt (and the meta envelope's meta.generatedAt).","affects":["generatedAt"]}],"filedAt":"2026-05-15","manager":{"cik":"1067983","name":"BERKSHIRE HATHAWAY INC"},"reportDate":"2026-03-31","reportType":"13F HOLDINGS REPORT","generatedAt":"2026-07-10T12:00:00.000Z","methodology":"https://docs.useotto.xyz/acp-swarm/sec-filings-methodology","topHoldings":[{"cusip":"037833100","issuer":"APPLE INC","putCall":null,"quantity":300000000,"valueUsd":63219884120,"quantityType":"SH","titleOfClass":"COM"}],"amendmentType":null,"positionCount":41,"totalValueUsd":284811220450,"amendmentApplied":false,"newerNoticeFiledAt":null,"confidentialOmitted":false,"valuedPositionCount":41,"newerNoticeReportDate":null,"valuesNormalizedFromThousands":false},"meta":{"degraded":false,"validUntil":"","generatedAt":"","stalenessSec":0},"status":"success"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":{"p10Cents":"0.3000","medianCents":"0.3000","p90Cents":"0.3000","minCents":"0.3000","maxCents":"0.3000","p95Cents":"0.3000","sampleCount":1,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Va_5AkT-ivd1LbX5YTqIN","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the latest 13F top-20 positions for any SEC-filing institutional manager (hedge funds, asset managers) identified by CIK number or manager ticker, with amendments applied.","exampleAgentPrompt":"Pull the latest 13F top-20 holdings for Berkshire Hathaway — their SEC CIK is 1067983 — so I can see their current institutional positions with values and share amounts.","exampleUseCases":null,"resultDescription":"Returns a structured response with status, meta (including freshness/generatedAt timestamp), and data containing up to 20 13F positions: issuer name, CUSIP, value in whole USD, share or principal amount (SH/PRN type), put/call flag, reported value, and position count. Amendments are applied with approximately 1-hour correction lag on an hourly snapshot.","failureModes":["Invalid or unknown CIK number returns an error or empty result","Manager ticker not recognized or not a publicly-listed filer returns no data","Manager has not filed a 13F (e.g., below $100M AUM threshold) — no holdings returned","Data lag: amendments may take up to ~1 hour to reflect in the snapshot","Rate limiting or payment failure (x402 USDC payment not processed) blocks the call"],"whenToPreferThis":"Use this endpoint when you need authoritative, primary-source institutional holdings data directly from SEC EDGAR 13F filings. Ideal for whale tracking, portfolio analysis, and institutional ownership research where you have a CIK or manager ticker. Prefer this over third-party aggregators when accuracy and direct SEC sourcing matter, and when you need amendment-corrected data rather than raw filings.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T00:34:36.337Z","isFirstParty":false,"canonicalSlug":"sec-13f-institutional-holdings-lookup-d98a04b2"}