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MARTINGALE ASSET MANAGEMENT L P: NPK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MARTINGALE ASSET MANAGEMENT L P on NPK, newest first. How the timeline and the estimate are built.

MARTINGALE ASSET MANAGEMENT L P held 11,907 NPK shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 11,907 shares
    Change vs previous 13F +1,701 shares

    0.04% of the 13F portfolio, value $1,488,256.

    13F-HR 0000936944-26-000006 filed by MARTINGALE ASSET MANAGEMENT L P
    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 10,206 shares
    Change vs previous 13F +1,160 shares

    0.04% of the 13F portfolio, value $1,398,835.

    13F-HR 0000936944-26-000003 filed by MARTINGALE ASSET MANAGEMENT L P
    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 9,046 shares
    Change vs previous 13F +241 shares

    0.02% of the 13F portfolio, value $965,752.

    13F-HR 0000936944-26-000002 filed by MARTINGALE ASSET MANAGEMENT L P
    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 8,805 shares
    Change vs previous 13F -110 shares

    0.02% of the 13F portfolio, value $987,481.

    13F-HR 0000936944-25-000010 filed by MARTINGALE ASSET MANAGEMENT L P
    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 8,915 shares
    Change vs previous 13F 0 shares

    0.02% of the 13F portfolio, value $873,314.

    13F-HR 0000936944-25-000008 filed by MARTINGALE ASSET MANAGEMENT L P
    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 8,915 shares
    Change vs previous 13F 0 shares

    0.02% of the 13F portfolio, value $783,719.

    13F-HR 0000936944-25-000005 filed by MARTINGALE ASSET MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 8,915 shares
    Change vs previous 13F +200 shares

    0.02% of the 13F portfolio, value $877,416.

    13F-HR 0000936944-25-000003 filed by MARTINGALE ASSET MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 8,715 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $654,846.

    13F-HR 0000936944-24-000007 filed by MARTINGALE ASSET MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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