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Disclosery

Janus Henderson: IOSP position timeline

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

Janus Henderson held 127,976 IOSP 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 127,976 shares
    Share basis changed not comparable

    Membership change: Jupiter Topco LLC joined the group. <0.01% of the 13F portfolio, value $10,416,589.

    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 133,272 shares
    Change vs previous 13F -17,579 shares

    <0.01% of the 13F portfolio, value $9,732,040.

    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 150,851 shares
    Change vs previous 13F -107,256 shares

    0.01% of the 13F portfolio, value $11,545,721.

    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 258,107 shares
    Change vs previous 13F +2,688 shares

    0.01% of the 13F portfolio, value $19,915,276.

    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 255,419 shares
    Change vs previous 13F -219,099 shares

    0.01% of the 13F portfolio, value $21,477,561.

    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 474,518 shares
    Change vs previous 13F +6,580 shares

    0.02% of the 13F portfolio, value $45,173,543.

    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 467,938 shares
    Change vs previous 13F +4,527 shares

    0.03% of the 13F portfolio, value $51,502,138.

    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 463,411 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $52,406,164.

    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).