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Disclosery

DF DENT & CO INC: IDXX position timeline

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

DF DENT & CO INC held 39,515 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 39,515 shares
    Change vs previous 13F -508 shares

    0.39% of the 13F portfolio, value $20,802,277.

    13F-HR 0000934999-26-000003 filed by DF DENT & CO 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 40,023 shares
    Change vs previous 13F -2,414 shares

    0.43% of the 13F portfolio, value $22,488,523.

    13F-HR 0000934999-26-000002 filed by DF DENT & CO 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 42,437 shares
    Change vs previous 13F -2,010 shares

    0.41% of the 13F portfolio, value $28,709,904.

    13F-HR 0000934999-26-000001 filed by DF DENT & CO 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 44,447 shares
    Change vs previous 13F -1,769 shares

    0.37% of the 13F portfolio, value $28,396,744.

    13F-HR 0000934999-25-000008 filed by DF DENT & CO 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 46,216 shares
    Change vs previous 13F -8,102 shares

    0.31% of the 13F portfolio, value $24,787,489.

    13F-HR 0000934999-25-000005 filed by DF DENT & CO 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 54,318 shares
    Change vs previous 13F +1,046 shares

    0.3% of the 13F portfolio, value $22,810,844.

    13F-HR 0000934999-25-000004 filed by DF DENT & CO 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 53,272 shares
    Change vs previous 13F -941 shares

    0.28% of the 13F portfolio, value $22,024,776.

    13F-HR 0000934999-25-000002 filed by DF DENT & CO 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 54,213 shares
    Change vs previous 13F not available

    0.33% of the 13F portfolio, value $27,389,492.

    13F-HR 0000934999-24-000013 filed by DF DENT & CO INC
    Filed (acceptance time not in the bulk data set), ingested

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