{"uid":"cap_W7dsE12p23xlZj4Kq-VZ9","slug":"x402-factory-edgar-13f-holdings-diff-d3722238","name":"x402-factory EDGAR 13F Holdings Diff","description":"Paid data APIs for AI agents: prediction-market analytics, weather intelligence, weather×market edge signals, and SEC/gov data. Paid endpoints use the x402 protocol (HTTP 402 + USDC on Base): call without payment to receive requirements, retry with an X-PAYMENT header. Machine-readable catalog: /llms.txt. Per-endpoint docs: /docs/{id}.","url":"https://x402-factory.com/v1/edgar/13f/%7Bcik%7D/diff","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"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_0pDa3lbb7Dq0pvSBQEYN0","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 quarter-over-quarter diff of a hedge fund or institutional investor's 13F holdings by CIK, showing what positions were added, removed, or changed","exampleAgentPrompt":"Pull the latest 13F holdings diff for Berkshire Hathaway — CIK 0001067983 — and tell me what positions they added, removed, or meaningfully changed compared to last quarter.","exampleUseCases":[{"title":"Hedge fund portfolio shift tracker","prompt":"What did Bill Ackman's Pershing Square add or sell in their latest 13F? Give me a diff against the prior quarter — their CIK is 0001336528."},{"title":"Activist investor entry detection","prompt":"I want to know if any new positions appeared in Elliott Management's latest 13F filing versus the previous one — their SEC CIK is 0001048268. Show me what's new."},{"title":"Earnings-season portfolio review","prompt":"Can you pull the 13F quarter-over-quarter diff for Renaissance Technologies, CIK 0001037389, so I can see which tech stocks they trimmed or added this cycle?"}],"resultDescription":"A structured diff of the fund's 13F SEC filing compared to the prior quarter, listing securities added (new positions), removed (exited positions), and changed (increased or decreased size), keyed by CIK. Each entry typically includes the security name, CUSIP or ticker, prior holding size, current holding size, and the delta.","failureModes":["Invalid or unknown CIK returns a 404 or empty result","CIK exists but filer has not submitted a 13F (e.g. non-institutional filer) returns empty or error","Payment not included returns HTTP 402 with USDC/Base payment requirements","Rate limiting or network timeout if retried too quickly","No prior quarter filing available for diff — only one filing on record — returns incomplete diff or error","EDGAR data lag: most recent quarter may not yet be processed"],"whenToPreferThis":"Choose this endpoint when you need machine-readable, pre-computed quarter-over-quarter diffs of SEC 13F filings for a specific institutional filer identified by CIK. It is ideal for AI agents that need to detect hedge fund portfolio changes, track activist investors, or monitor institutional sentiment without parsing raw EDGAR XML. Prefer this over raw EDGAR access when you need normalized, diff-ready data with a simple per-call pricing model via x402/USDC.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:36:40.756Z","isFirstParty":false}