13d activist watch derived

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    "method": "GET",
    "queryParams": {
      "ticker": "GME"
    }
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  "output": {
    "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"
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      "meta": {
        "dataAsOf": "",
        "degraded": false,
        "validUntil": "",
        "generatedAt": "",
        "stalenessSec": 0
      },
      "status": "success"
    }
  }
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