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Disclosery

Janus Henderson: OKLO position timeline

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

Janus Henderson held 63,800 OKLO 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 63,800 shares
    Share basis changed not comparable

    Membership change: Jupiter Topco LLC joined the group. <0.01% of the 13F portfolio, value $3,337,378.

    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 0 shares
    Change vs previous 13F -3,600 shares

    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).

    Exited: the 13F for this period no longer lists the position.

  3. period ended2025-12-31
    13F 3,600 shares
    Change vs previous 13F -41,187 shares

    <0.01% of the 13F portfolio, value $258,463.

    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 44,787 shares
    Change vs previous 13F +8,287 shares

    <0.01% of the 13F portfolio, value $4,997,110.

    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 36,500 shares
    Change vs previous 13F +21,800 shares

    <0.01% of the 13F portfolio, value $2,042,723.

    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 14,700 shares
    Change vs previous 13F 0 shares

    <0.01% of the 13F portfolio, value $328,913.

    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 14,700 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $312,449.

    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).