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Disclosery

RHUMBLINE ADVISERS: NPK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of RHUMBLINE ADVISERS on NPK, newest first. How the timeline and the estimate are built.

RHUMBLINE ADVISERS held 13,965 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 13,965 shares
    Change vs previous 13F +774 shares

    <0.01% of the 13F portfolio, value $1,745,461.

    13F-HR 0001115418-26-000005 filed by RHUMBLINE ADVISERS
    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 13,191 shares
    Change vs previous 13F +188 shares

    <0.01% of the 13F portfolio, value $1,807,942.

    13F-HR 0001115418-26-000003 filed by RHUMBLINE ADVISERS
    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 13,003 shares
    Change vs previous 13F -1,154 shares

    <0.01% of the 13F portfolio, value $1,388,180.

    13F-HR 0001115418-26-000002 filed by RHUMBLINE ADVISERS
    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 14,157 shares
    Change vs previous 13F -1,046 shares

    <0.01% of the 13F portfolio, value $1,587,691.

    13F-HR 0001115418-25-000021 filed by RHUMBLINE ADVISERS
    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 15,203 shares
    Change vs previous 13F +404 shares

    <0.01% of the 13F portfolio, value $1,489,271.

    13F-HR 0001115418-25-000017 filed by RHUMBLINE ADVISERS
    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/A 14,799 shares
    Change vs previous 13F -487 shares

    <0.01% of the 13F portfolio, value $1,300,964.

    13F-HR/A 0001115418-25-000005 filed by RHUMBLINE ADVISERS
    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/A 15,286 shares
    Change vs previous 13F -546 shares

    <0.01% of the 13F portfolio, value $1,504,431.

    13F-HR/A 0001115418-25-000006 filed by RHUMBLINE ADVISERS
    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 15,832 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $1,189,599.

    13F-HR 0001115418-24-000011 filed by RHUMBLINE ADVISERS
    Filed (acceptance time not in the bulk data set), ingested

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