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STEINBERG ASSET MANAGEMENT LLC: ACM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of STEINBERG ASSET MANAGEMENT LLC on ACM, newest first. How the timeline and the estimate are built.

STEINBERG ASSET MANAGEMENT LLC held 28,190 ACM shares at 2026-06-30 per its 13F-HR filed 2026-08-05.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 28,190 shares
    Change vs previous 13F 0 shares

    1.22% of the 13F portfolio, value $1,967,662.

    13F-HR 0001398344-26-013571 filed by STEINBERG ASSET MANAGEMENT LLC
    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 28,190 shares
    Change vs previous 13F -6 shares

    1.55% of the 13F portfolio, value $2,391,076.

    13F-HR 0001398344-26-008836 filed by STEINBERG ASSET MANAGEMENT LLC
    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 28,196 shares
    Change vs previous 13F -900 shares

    2% of the 13F portfolio, value $2,687,925.

    13F-HR 0002085853-26-000274 filed by STEINBERG ASSET MANAGEMENT LLC
    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 29,096 shares
    Change vs previous 13F -418 shares

    2.73% of the 13F portfolio, value $3,796,155.

    13F-HR 0002085853-25-000280 filed by STEINBERG ASSET MANAGEMENT LLC
    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 29,514 shares
    Change vs previous 13F -1,004 shares

    2.48% of the 13F portfolio, value $3,330,950.

    13F-HR 0001667731-25-001126 filed by STEINBERG ASSET MANAGEMENT LLC
    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 30,518 shares
    Change vs previous 13F +320 shares

    2.3% of the 13F portfolio, value $2,829,934.

    13F-HR 0001667731-25-000646 filed by STEINBERG ASSET MANAGEMENT LLC
    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 30,198 shares
    Change vs previous 13F -320 shares

    2.38% of the 13F portfolio, value $3,225,750.

    13F-HR 0001667731-25-000276 filed by STEINBERG ASSET MANAGEMENT LLC
    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 30,518 shares
    Change vs previous 13F not available

    2.41% of the 13F portfolio, value $3,151,594.

    13F-HR 0001169883-24-000006 filed by STEINBERG ASSET MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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