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Disclosery

BANK OF MONTREAL /CAN/: ATEC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BANK OF MONTREAL /CAN/ on ATEC, newest first. How the timeline and the estimate are built.

BANK OF MONTREAL /CAN/ held 366,841 ATEC shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 366,841 shares
    Change vs previous 13F +40,544 shares

    <0.01% of the 13F portfolio, value $3,173,175.

    13F-HR 0000927971-26-000090 filed by BANK OF MONTREAL /CAN/
    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 326,297 shares
    Change vs previous 13F -232,529 shares

    <0.01% of the 13F portfolio, value $3,550,112.

    13F-HR 0000927971-26-000078 filed by BANK OF MONTREAL /CAN/
    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 558,826 shares
    Change vs previous 13F -135,627 shares

    <0.01% of the 13F portfolio, value $11,757,699.

    13F-HR 0000927971-26-000035 filed by BANK OF MONTREAL /CAN/
    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 694,453 shares
    Change vs previous 13F -48,588 shares

    <0.01% of the 13F portfolio, value $10,097,346.

    13F-HR 0000927971-25-000027 filed by BANK OF MONTREAL /CAN/
    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 743,041 shares
    Change vs previous 13F +627,973 shares

    <0.01% of the 13F portfolio, value $8,247,755.

    13F-HR 0000927971-25-000018 filed by BANK OF MONTREAL /CAN/
    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 115,068 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $1,166,790.

    13F-HR 0000927971-25-000015 filed by BANK OF MONTREAL /CAN/
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).