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Disclosery

Janus Henderson: AON position timeline

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

Janus Henderson held 25,392 AON 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 25,392 shares
    Share basis changed not comparable

    Membership change: Jupiter Topco LLC joined the group. <0.01% of the 13F portfolio, value $8,420,151.

    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 26,747 shares
    Change vs previous 13F +2,396 shares

    <0.01% of the 13F portfolio, value $8,634,736.

    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 24,351 shares
    Change vs previous 13F -290,240 shares

    <0.01% of the 13F portfolio, value $8,593,590.

    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 314,591 shares
    Change vs previous 13F +155,974 shares

    0.05% of the 13F portfolio, value $112,170,458.

    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 158,617 shares
    Change vs previous 13F +133,559 shares

    0.03% of the 13F portfolio, value $56,589,408.

    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 25,058 shares
    Change vs previous 13F +687 shares

    0.01% of the 13F portfolio, value $9,877,112.

    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 24,371 shares
    Change vs previous 13F -3,332 shares

    <0.01% of the 13F portfolio, value $8,750,895.

    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 27,703 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $9,584,961.

    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).