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Disclosery

ACK Asset Management LLC: CTOS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ACK Asset Management LLC on CTOS, newest first. How the timeline and the estimate are built.

ACK Asset Management LLC held 0 CTOS shares at 2026-03-31 per its 13F-HR filed 2026-05-15.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -800,136 shares

    13F-HR 0001510940-26-000004 filed by ACK Asset Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 800,136 shares
    Change vs previous 13F -1,124,864 shares

    0.58% of the 13F portfolio, value $4,608,783.

    13F-HR 0001510940-26-000001 filed by ACK 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 ended2025-09-30
    13F 1,925,000 shares
    Change vs previous 13F +50,000 shares

    1.55% of the 13F portfolio, value $12,358,500.

    13F-HR 0001510940-25-000006 filed by ACK 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 ended2025-06-30
    13F 1,875,000 shares
    Change vs previous 13F not available

    1.22% of the 13F portfolio, value $9,262,500.

    13F-HR 0001510940-25-000005 filed by ACK Asset Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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