# Otto AI Schedule 13D/13G Activist Stake Filings > Otto AI Schedule 13D/13G Activist Stake Filings is a paid API for AI agents from x402.ottoai.services, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14). Returns all Schedule 13D and 13G beneficial-ownership filings made about a US-listed company in the past 365 days, validated against EDGAR cover pages, with counts, amendments, and reporting-person details. ## Facts - Endpoint: GET https://x402.ottoai.services/13d-activist-watch - Price: $0.005/call - Payment: x402 - Status: unknown - Last checked: 2026-09-14 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/otto-ai-schedule-13d-13g-activist-stake-filings-3736165b - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fHE5h9hjjWGXVfvmPThuT Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability otto-ai-schedule-13d-13g-activist-stake-filings-3736165b ``` Example prompt: Pull up all the Schedule 13D and 13G beneficial-ownership filings made about GameStop (GME) in the last year — I want to see the activist vs passive counts, any amendments, and who the reporting persons are. ## When to prefer this Use this endpoint when you need to audit all recent SEC beneficial-ownership filings (Schedule 13D and 13G) about a specific US-listed company, especially when you need subject-validated results (filings confirmed to be ABOUT the issuer, not by the issuer about others). Prefer this over general EDGAR search when you want structured summaries with activist vs passive counts, amendment tracking, and reporting-person names in a single call. ## Known failure modes - Invalid or unrecognized ticker symbol returns error or empty data - Ticker has no 13D/13G filings in the 365-day window returns empty events array - EDGAR data lag may mean very recent filings are not yet indexed - ticker parameter missing causes validation error - Rate limiting or payment failure for x402 micropayment ## How this service works Schedule 13D and 13G activist stake filings by ticker: every beneficial-ownership filing made about a US-listed issuer in the last 365 days, each validated against its own cover page so a company's outbound filings about OTHER companies are excluded. Returns 13D vs 13G counts, amendments, reporting-person names and EDGAR links. 13D is the schedule filed without a passive/qualified certification. Public-domain SEC EDGAR. $0.005 per call. ## Output A JSON object containing: the issuer's name and CIK, a summary with total event count, amendment count, 13D vs 13G split counts, latest filing dates, and number of distinct reporting persons, plus a list of individual filing events each with form type, schedule type, amendment flag, reporting person names, EDGAR URL, and filing date. Includes methodology link, data freshness timestamps, and caveats explaining the 13D vs 13G distinction. ## Request schema (JSON Schema) ```json { "type": "object", "$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": [ "ticker" ], "properties": { "ticker": { "type": "string", "description": "US-listed stock ticker symbol (e.g. NVDA, GME, MSTR)" } } } }, "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" } } } } } } } ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "data": { "note": "Schedule 13D and 13G beneficial-ownership filings made about this company, each one checked against its own cover page to confirm this company is the subject.", "events": [ { "url": "https://www.sec.gov/Archives/edgar/data/1326380/000110465926098123/", "form": "SCHEDULE 13G/A", "filedAt": "2026-08-14", "schedule": "13G", "isAmendment": true, "reportingPersonNames": [ "Vanguard Group Inc" ] } ], "issuer": { "cik": "1326380", "name": "GameStop Corp." }, "ticker": "GME", "window": { "end": "2026-09-01", "start": "2025-09-01", "lookbackDays": 365 }, "caveats": [ { "code": "schedule_13d_vs_13g", "plain": "Schedule 13D and Schedule 13G are different filings. A 13G is the short form, available only to filers who certify they are a qualified institution, exempt, or passive. A 13D is the general schedule, filed by holders who do NOT make that certification — which is why a 13D is the one worth reading closely. That is the whole of what the form type tells you: it is not a declaration of activism, and it says nothing about the size or direction of the stake.", "affects": [ "summary.schedule13DCount" ] } ], "summary": { "eventCount": 10, "latestFiledAt": "2026-08-14", "amendmentCount": 6, "latest13DFiledAt": "2026-05-02", "schedule13DCount": 2, "schedule13GCount": 8, "distinctReportingPersons": 7 }, "coverage": { "maxEventsChecked": 20, "subjectValidated": true }, "generatedAt": "2026-09-01T12:00:00.000Z", "methodology": "https://docs.useotto.xyz/acp-swarm/sec-filings-methodology" }, "meta": { "dataAsOf": "", "degraded": false, "validUntil": "", "generatedAt": "", "stalenessSec": 0 }, "status": "success" } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/otto-ai-schedule-13d-13g-activist-stake-filings-3736165b/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from x402.ottoai.services](https://www.zero.xyz/host/x402.ottoai.services/llms.txt)