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Disclosery

SOUTHEASTERN ASSET MANAGEMENT INC/TN/: ACMR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of SOUTHEASTERN ASSET MANAGEMENT INC/TN/ on ACMR, newest first. How the timeline and the estimate are built.

SOUTHEASTERN ASSET MANAGEMENT INC/TN/ held 139,478 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 139,478 shares
    Change vs previous 13F -643,422 shares

    0.92% of the 13F portfolio, value $17,698,363.

    13F-HR 0001398344-26-014641 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    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 782,900 shares
    Change vs previous 13F -897,281 shares

    1.52% of the 13F portfolio, value $30,807,115.

    13F-HR 0001398344-26-009296 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    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 1,680,181 shares
    Change vs previous 13F +194,494 shares

    2.95% of the 13F portfolio, value $66,283,140.

    13F-HR 0001398344-26-003084 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    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 1,485,687 shares
    Change vs previous 13F +299,943 shares

    2.97% of the 13F portfolio, value $58,134,932.

    13F-HR 0001398344-25-020985 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    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 1,185,744 shares
    Change vs previous 13F not available

    1.55% of the 13F portfolio, value $30,710,770.

    13F-HR 0001398344-25-015655 filed by SOUTHEASTERN ASSET MANAGEMENT INC/TN/
    Filed (acceptance time not in the bulk data set), ingested

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