{"uid":"cap_ypyDVR4xZBXCpzM7CvDO1","slug":"13f-portfolio-holdings-changes-quarter-over-quarter-229cbb8a","name":"13F Portfolio Holdings Changes (Quarter-over-Quarter)","description":"Quarter-over-quarter change of an institutional manager's Form 13F portfolio. Give a CIK or name and get every position bucketed as new, added, reduced, sold out or unchanged, with per-position share and dollar deltas and a net flow summary, from two consecutive 13F filings, cited to both.","url":"https://api.agentstools.dev/holdings/changes","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","required":[],"properties":{"cik":{"type":"string","description":"SEC EDGAR filer CIK, any zero-padding accepted"},"name":{"type":"string","description":"Manager name (best-effort resolve; supply cik if not found)"},"quarter":{"type":"string","description":"Quarter period-end date, ISO YYYY-MM-DD (default latest)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"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_8jpZxkAXF_r-W2Af7X2_H","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 quarter-over-quarter changes in an institutional manager's 13F portfolio, bucketing each position as new, added, reduced, sold out, or unchanged, with share/dollar deltas and a net flow summary.","exampleAgentPrompt":"Show me all the quarter-over-quarter 13F portfolio changes for Appaloosa Management — I want to see which positions they added, reduced, sold out of, or initiated new, with the share and dollar deltas, for their latest filing.","exampleUseCases":null,"resultDescription":"A structured JSON object listing every 13F position bucketed as new, added, reduced, sold out, or unchanged, with per-position share count and dollar value deltas, a net flow summary, and citations to both consecutive 13F filings used for the comparison.","failureModes":["CIK not found in SEC EDGAR — returns error if CIK is invalid or not a 13F filer","Manager name not resolvable — best-effort name resolution may fail; recommend supplying CIK directly","No consecutive 13F filings available for the requested quarter — returns error if only one or zero filings exist","Invalid quarter date format — must be ISO YYYY-MM-DD matching a valid quarter-end date","Payment failure — x402 micropayment not completed, request rejected"],"whenToPreferThis":"Use this endpoint when you need a structured diff of an institutional manager's 13F portfolio between two consecutive quarters — specifically when you want per-position change classification (new/added/reduced/sold/unchanged) with numeric deltas, rather than a raw snapshot of current holdings. Prefer over raw 13F snapshot endpoints when the user's intent is change detection, trend analysis, or identifying entry/exit decisions by a fund.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T07:06:01.749Z","isFirstParty":false}