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Disclosery

Janus Henderson: WAT position timeline

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

Janus Henderson held 1,663,601 WAT 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 1,663,601 shares
    Share basis changed not comparable

    Membership change: Jupiter Topco LLC joined the group. 0.25% of the 13F portfolio, value $623,920,528.

    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 1,638,772 shares
    Change vs previous 13F +348,379 shares

    0.23% of the 13F portfolio, value $488,027,923.

    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 1,290,393 shares
    Change vs previous 13F -12,040 shares

    0.22% of the 13F portfolio, value $490,130,010.

    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 1,302,433 shares
    Change vs previous 13F +395,952 shares

    0.18% of the 13F portfolio, value $390,483,073.

    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 906,481 shares
    Change vs previous 13F +5,002 shares

    0.16% of the 13F portfolio, value $316,399,363.

    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 901,479 shares
    Change vs previous 13F +12,173 shares

    0.18% of the 13F portfolio, value $326,477,628.

    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 889,306 shares
    Change vs previous 13F +3,713 shares

    0.17% of the 13F portfolio, value $329,911,260.

    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 885,593 shares
    Change vs previous 13F not available

    0.16% of the 13F portfolio, value $318,716,582.

    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).