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BlackRock, Inc.: ACMR position timeline

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

BlackRock, Inc. held 8,660,842 ACMR shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 8,660,842 shares
    Change vs previous 13F +675,995 shares

    0.02% of the 13F portfolio, value $1,098,974,240.

    13F-HR 0002012383-26-003238 filed by BlackRock, Inc.
    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 7,984,847 shares
    Change vs previous 13F +96,367 shares

    0.01% of the 13F portfolio, value $314,203,729.

    13F-HR 0002012383-26-001841 filed by BlackRock, Inc.
    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 7,888,480 shares
    Change vs previous 13F +300,941 shares

    0.01% of the 13F portfolio, value $311,200,536.

    13F-HR 0002012383-26-000920 filed by BlackRock, Inc.
    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 7,587,539 shares
    Change vs previous 13F +3,481,447 shares

    0.01% of the 13F portfolio, value $296,900,401.

    13F-HR 0002012383-25-002949 filed by BlackRock, Inc.
    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 4,106,092 shares
    Change vs previous 13F -106,364 shares

    <0.01% of the 13F portfolio, value $106,347,785.

    13F-HR 0001060021-25-000120 filed by BlackRock, Inc.
    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 4,212,456 shares
    Change vs previous 13F -690,735 shares

    <0.01% of the 13F portfolio, value $98,318,723.

    13F-HR 0001576419-25-000869 filed by BlackRock, Inc.
    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 4,903,191 shares
    Change vs previous 13F +460,908 shares

    <0.01% of the 13F portfolio, value $74,038,185.

    13F-HR 0001060021-25-000002 filed by BlackRock, Inc.
    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 4,442,283 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $90,178,347.

    13F-HR 0001426459-24-000006 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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