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GAMCO Investors (Gabelli): NPK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GAMCO Investors (Gabelli) on NPK, newest first. How the timeline and the estimate are built.

GAMCO Investors (Gabelli) held 113,082 NPK shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 113,082 shares
    Change vs previous 13F -800 shares

    0.05% of the 13F portfolio, value $14,134,149.

    13F-HR 0001140361-26-032508 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 87,630 shares
    • GABELLI FUNDS LLC: 25,452 shares

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

  2. period ended2026-03-31
    13F 113,882 shares
    Change vs previous 13F -7,689 shares

    0.06% of the 13F portfolio, value $15,608,700.

    13F-HR 0001140361-26-021334 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 88,430 shares
    • GABELLI FUNDS LLC: 25,452 shares

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

  3. period ended2025-12-31
    13F 121,571 shares
    Change vs previous 13F +520 shares

    0.05% of the 13F portfolio, value $12,978,947.

    13F-HR 0001140361-26-003895 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 95,819 shares
    • GABELLI FUNDS LLC: 25,752 shares

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

  4. period ended2025-09-30
    13F 121,051 shares
    Change vs previous 13F -5,053 shares

    0.05% of the 13F portfolio, value $13,575,897.

    13F-HR 0001140361-25-041670 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 95,299 shares
    • GABELLI FUNDS LLC: 25,752 shares

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

  5. period ended2025-06-30
    13F 126,104 shares
    Change vs previous 13F -366 shares

    0.05% of the 13F portfolio, value $12,353,148.

    13F-HR 0001140361-25-030814 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 100,352 shares
    • GABELLI FUNDS LLC: 25,752 shares

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

  6. period ended2025-03-31
    13F 126,470 shares
    Change vs previous 13F -9,617 shares

    0.05% of the 13F portfolio, value $11,117,978.

    13F-HR 0001140361-25-018975 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 100,720 shares
    • GABELLI FUNDS LLC: 25,750 shares

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

  7. period ended2024-12-31
    13F 136,087 shares
    Change vs previous 13F +1,825 shares

    0.06% of the 13F portfolio, value $13,393,683.

    13F-HR 0001140361-25-004330 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 110,787 shares
    • GABELLI FUNDS LLC: 25,300 shares

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

  8. period ended2024-09-30
    13F 134,262 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $10,088,447.

    13F-HR 0001140361-24-046738 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 109,262 shares
    • GABELLI FUNDS LLC: 25,000 shares

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