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BLAIR WILLIAM & CO/IL: AMTM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BLAIR WILLIAM & CO/IL on AMTM, newest first. How the timeline and the estimate are built.

BLAIR WILLIAM & CO/IL held 27,278 AMTM shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 27,278 shares
    Change vs previous 13F -22,020 shares

    <0.01% of the 13F portfolio, value $563,836.

    13F-HR 0001104659-26-093821 filed by BLAIR WILLIAM & CO/IL
    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 49,298 shares
    Change vs previous 13F -30,667 shares

    <0.01% of the 13F portfolio, value $1,285,692.

    13F-HR 0001104659-26-057897 filed by BLAIR WILLIAM & CO/IL
    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 79,965 shares
    Change vs previous 13F +29,316 shares

    0.01% of the 13F portfolio, value $2,318,985.

    13F-HR 0001104659-26-015563 filed by BLAIR WILLIAM & CO/IL
    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 50,649 shares
    Change vs previous 13F -5,919 shares

    <0.01% of the 13F portfolio, value $1,213,044.

    13F-HR 0001104659-25-109927 filed by BLAIR WILLIAM & CO/IL
    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 56,568 shares
    Change vs previous 13F +2,368 shares

    <0.01% of the 13F portfolio, value $1,335,570.

    13F-HR 0001104659-25-070274 filed by BLAIR WILLIAM & CO/IL
    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 54,200 shares
    Change vs previous 13F -2,219 shares

    <0.01% of the 13F portfolio, value $986,440.

    13F-HR 0001104659-25-046545 filed by BLAIR WILLIAM & CO/IL
    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 56,419 shares
    Change vs previous 13F +26,982 shares

    <0.01% of the 13F portfolio, value $1,186,492.

    13F-HR 0001104659-25-011872 filed by BLAIR WILLIAM & CO/IL
    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 29,437 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $949,356.

    13F-HR 0001104659-24-116499 filed by BLAIR WILLIAM & CO/IL
    Filed (acceptance time not in the bulk data set), ingested

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