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Disclosery

Janus Henderson: OSIS position timeline

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

Janus Henderson held 905,925 OSIS 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 905,925 shares
    Share basis changed not comparable

    Membership change: Jupiter Topco LLC joined the group. 0.08% of the 13F portfolio, value $198,127,058.

    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 772,314 shares
    Change vs previous 13F +19,747 shares

    0.1% of the 13F portfolio, value $205,056,005.

    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 752,567 shares
    Change vs previous 13F -247,724 shares

    0.09% of the 13F portfolio, value $191,948,686.

    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 1,000,291 shares
    Change vs previous 13F -52,435 shares

    0.11% of the 13F portfolio, value $249,312,634.

    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 1,052,726 shares
    Change vs previous 13F -182,233 shares

    0.12% of the 13F portfolio, value $236,715,093.

    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 1,234,959 shares
    Change vs previous 13F +4,154 shares

    0.13% of the 13F portfolio, value $238,741,469.

    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 1,230,805 shares
    Change vs previous 13F +21,637 shares

    0.1% of the 13F portfolio, value $206,071,862.

    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 1,209,168 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $183,588,817.

    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).