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Polymer Capital Management (US) LLC: AMG position timeline

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

Polymer Capital Management (US) LLC held 4,493 AMG 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 4,493 shares
    Change vs previous 13F +2,559 shares

    0.23% of the 13F portfolio, value $1,520,431.

    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 1,934 shares
    Change vs previous 13F -877 shares

    0.08% of the 13F portfolio, value $535,138.

    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 2,811 shares
    Change vs previous 13F +1,442 shares

    0.1% of the 13F portfolio, value $810,355.

    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).

  4. period ended2025-09-30
    13F 1,369 shares
    Change vs previous 13F -770 shares

    0.04% of the 13F portfolio, value $326,411.

    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).

  5. period ended2025-06-30
    13F 2,139 shares
    Change vs previous 13F -804 shares

    0.07% of the 13F portfolio, value $420,891.

    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).

  6. period ended2025-03-31
    13F 2,943 shares
    Change vs previous 13F not available

    0.15% of the 13F portfolio, value $494,512.

    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).