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Disclosery

OP Asset Management Ltd: ATMU position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of OP Asset Management Ltd on ATMU, newest first. How the timeline and the estimate are built.

OP Asset Management Ltd held 11,837 ATMU shares at 2026-06-30 per its 13F-HR filed 2026-07-28.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 11,837 shares
    Change vs previous 13F -110,503 shares

    0.01% of the 13F portfolio, value $603,569.

    13F-HR 0002097005-26-000008 filed by OP Asset Management Ltd
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec ยง4.2).

  2. period ended2026-03-31
    13F/A 122,340 shares
    Change vs previous 13F +84,992 shares

    0.07% of the 13F portfolio, value $6,945,242.

    13F-HR/A 0002097005-26-000013 filed by OP Asset Management Ltd
    Accepted , ingested

  3. period ended2025-12-31
    13F/A 37,348 shares
    Change vs previous 13F +18,604 shares

    0.02% of the 13F portfolio, value $1,938,735.

    13F-HR/A 0002097005-26-000012 filed by OP Asset Management Ltd
    Accepted , ingested

  4. period ended2025-09-30
    13F/A 18,744 shares
    Change vs previous 13F 0 shares

    0.01% of the 13F portfolio, value $845,167.

    13F-HR/A 0002097005-26-000011 filed by OP Asset Management Ltd
    Accepted , ingested

  5. period ended2025-06-30
    13F/A 18,744 shares
    Change vs previous 13F +6,106 shares

    0.01% of the 13F portfolio, value $682,656.

    13F-HR/A 0002097005-26-000010 filed by OP Asset Management Ltd
    Accepted , ingested

  6. period ended2025-03-31
    13F/A 12,638 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $464,194.

    13F-HR/A 0002097005-26-000009 filed by OP Asset Management Ltd
    Accepted , ingested