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Polymer Capital Management (US) LLC: AMKR position timeline

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

Polymer Capital Management (US) LLC held 26,726 AMKR 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 26,726 shares
    Change vs previous 13F -32,157 shares

    0.34% of the 13F portfolio, value $2,304,583.

    13F-HR 0001973324-26-000009 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).

  2. period ended2026-03-31
    13F 58,883 shares
    Change vs previous 13F +36,583 shares

    0.39% of the 13F portfolio, value $2,651,501.

    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).

  3. period ended2025-12-31
    13F 22,300 shares
    Change vs previous 13F not available

    0.11% of the 13F portfolio, value $880,404.

    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).