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Polymer Capital Management (US) LLC: MKSI position timeline

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

Polymer Capital Management (US) LLC held 1,187 MKSI 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 1,187 shares
    Change vs previous 13F -1,105 shares

    0.08% of the 13F portfolio, value $527,978.

    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 2,292 shares
    Change vs previous 13F -133 shares

    0.08% of the 13F portfolio, value $526,725.

    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 2,425 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $387,515.

    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).