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Polymer Capital Management (US) LLC: ALK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Polymer Capital Management (US) LLC on ALK, newest first. How the timeline and the estimate are built.

Polymer Capital Management (US) LLC held 0 ALK shares at 2026-03-31 per its 13F-HR filed 2026-05-14.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -32,928 shares

    13F-HR 0001973324-26-000007 filed by Polymer Capital Management (US) 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 32,928 shares
    Change vs previous 13F +7,668 shares

    0.21% of the 13F portfolio, value $1,656,278.

    13F-HR 0001973324-26-000003 filed by Polymer Capital Management (US) 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 25,260 shares
    Change vs previous 13F +10,816 shares

    0.17% of the 13F portfolio, value $1,257,443.

    13F-HR 0001973324-25-000011 filed by Polymer Capital Management (US) 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 14,444 shares
    Change vs previous 13F +4,056 shares

    0.12% of the 13F portfolio, value $714,689.

    13F-HR 0001641447-25-000003 filed by Polymer Capital Management (US) LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 10,388 shares
    Change vs previous 13F not available

    0.15% of the 13F portfolio, value $511,297.

    13F-HR 0001973324-25-000006 filed by Polymer Capital Management (US) LLC
    Filed (acceptance time not in the bulk data set), ingested

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