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Disclosery

Janus Henderson: WLK position timeline

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

Janus Henderson held 267,748 WLK 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 267,748 shares
    Share basis changed not comparable

    Membership change: Jupiter Topco LLC joined the group. 0.01% of the 13F portfolio, value $19,544,316.

    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 269,783 shares
    Change vs previous 13F -64,810 shares

    0.02% of the 13F portfolio, value $31,517,599.

    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 334,593 shares
    Change vs previous 13F -31,391 shares

    0.01% of the 13F portfolio, value $24,740,851.

    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 365,984 shares
    Change vs previous 13F +151,703 shares

    0.01% of the 13F portfolio, value $28,202,722.

    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 214,281 shares
    Change vs previous 13F -180,240 shares

    0.01% of the 13F portfolio, value $16,270,355.

    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 394,521 shares
    Change vs previous 13F +22,325 shares

    0.02% of the 13F portfolio, value $39,104,936.

    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 372,196 shares
    Change vs previous 13F +170,791 shares

    0.02% of the 13F portfolio, value $42,672,208.

    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 201,405 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $30,269,155.

    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).