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Disclosery

Janus Henderson: ACMR position timeline

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

Janus Henderson held 553,768 ACMR 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 553,768 shares
    Share basis changed not comparable

    Membership change: Jupiter Topco LLC joined the group. 0.03% of the 13F portfolio, value $70,209,476.

    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 1,085,634 shares
    Change vs previous 13F +2,652 shares

    0.02% of the 13F portfolio, value $42,697,985.

    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 1,082,982 shares
    Change vs previous 13F +1,011,088 shares

    0.02% of the 13F portfolio, value $42,739,885.

    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 71,894 shares
    Change vs previous 13F -7,496 shares

    <0.01% of the 13F portfolio, value $2,812,493.

    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 79,390 shares
    Change vs previous 13F -41,518 shares

    <0.01% of the 13F portfolio, value $2,055,010.

    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 120,908 shares
    Change vs previous 13F -31,097 shares

    <0.01% of the 13F portfolio, value $2,975,363.

    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 152,005 shares
    Change vs previous 13F +34,880 shares

    <0.01% of the 13F portfolio, value $2,295,100.

    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 117,125 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $2,377,638.

    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).