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Disclosery

Janus Henderson: ZTS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Janus Henderson on ZTS, newest first. How the timeline and the estimate are built.

Janus Henderson held 1,937,891 ZTS 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 1,937,891 shares
    Share basis changed not comparable

    Membership change: Jupiter Topco LLC joined the group. 0.06% of the 13F portfolio, value $139,263,939.

    13F-HR 0001085146-26-000611 filed by Jupiter Topco LLC
    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/A 3,701,747 shares
    Change vs previous 13F -182,365 shares

    0.21% of the 13F portfolio, value $437,568,419.

    13F-HR/A 0001085146-26-000420 filed by JANUS HENDERSON GROUP PLC
    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 3,884,112 shares
    Change vs previous 13F +1,593,375 shares

    0.22% of the 13F portfolio, value $488,698,236.

    13F-HR 0001085146-26-000226 filed by JANUS HENDERSON GROUP PLC
    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 2,290,737 shares
    Change vs previous 13F +150,391 shares

    0.15% of the 13F portfolio, value $335,172,137.

    13F-HR 0001085146-25-005993 filed by JANUS HENDERSON GROUP PLC
    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 2,140,346 shares
    Change vs previous 13F +162,070 shares

    0.16% of the 13F portfolio, value $333,777,117.

    13F-HR 0001085146-25-005104 filed by JANUS HENDERSON GROUP PLC
    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 1,978,276 shares
    Change vs previous 13F +371,768 shares

    0.18% of the 13F portfolio, value $322,674,042.

    13F-HR 0001085146-25-003208 filed by JANUS HENDERSON GROUP PLC
    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 1,606,508 shares
    Change vs previous 13F -164,552 shares

    0.13% of the 13F portfolio, value $261,755,998.

    13F-HR 0001085146-25-001531 filed by JANUS HENDERSON GROUP PLC
    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 1,771,060 shares
    Change vs previous 13F not available

    0.18% of the 13F portfolio, value $346,029,380.

    13F-HR 0001085146-24-005765 filed by JANUS HENDERSON GROUP PLC
    Filed (acceptance time not in the bulk data set), ingested

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