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AMERICAN CAPITAL MANAGEMENT INC: IDXX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of AMERICAN CAPITAL MANAGEMENT INC on IDXX, newest first. How the timeline and the estimate are built.

AMERICAN CAPITAL MANAGEMENT INC held 162,110 IDXX shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 162,110 shares
    Change vs previous 13F -3,946 shares

    3.83% of the 13F portfolio, value $85,341,188.

    13F-HR 0001104659-26-097334 filed by AMERICAN CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 166,056 shares
    Change vs previous 13F -15,689 shares

    5.01% of the 13F portfolio, value $93,305,206.

    13F-HR 0001104659-26-062771 filed by AMERICAN CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 181,745 shares
    Change vs previous 13F -2,553 shares

    5.43% of the 13F portfolio, value $122,955,945.

    13F-HR 0001104659-26-016553 filed by AMERICAN CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 184,298 shares
    Change vs previous 13F -4,702 shares

    4.69% of the 13F portfolio, value $117,746,149.

    13F-HR 0001104659-25-112700 filed by AMERICAN CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 189,000 shares
    Change vs previous 13F -32,606 shares

    4.2% of the 13F portfolio, value $101,368,260.

    13F-HR 0001104659-25-078772 filed by AMERICAN CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 221,606 shares
    Change vs previous 13F +15,544 shares

    3.79% of the 13F portfolio, value $93,063,440.

    13F-HR 0001104659-25-049586 filed by AMERICAN CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 206,062 shares
    Change vs previous 13F -42,791 shares

    3.17% of the 13F portfolio, value $85,194,273.

    13F-HR 0001104659-25-011376 filed by AMERICAN CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 248,853 shares
    Change vs previous 13F not available

    4.11% of the 13F portfolio, value $125,725,513.

    13F-HR 0001104659-24-119240 filed by AMERICAN CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).