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VIKING FUND MANAGEMENT LLC: GLW position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of VIKING FUND MANAGEMENT LLC on GLW, newest first. How the timeline and the estimate are built.

VIKING FUND MANAGEMENT LLC held 130,000 GLW shares at 2026-06-30 per its 13F-HR filed 2026-07-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 130,000 shares
    Change vs previous 13F -55,000 shares

    2.97% of the 13F portfolio, value $33,205,900.

    13F-HR 0001169069-26-000006 filed by VIKING FUND MANAGEMENT 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 185,000 shares
    Change vs previous 13F -45,000 shares

    2.58% of the 13F portfolio, value $25,154,450.

    13F-HR 0001169069-26-000004 filed by VIKING FUND MANAGEMENT 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 230,000 shares
    Change vs previous 13F 0 shares

    2.33% of the 13F portfolio, value $20,138,800.

    13F-HR 0001169069-26-000002 filed by VIKING FUND MANAGEMENT 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 230,000 shares
    Change vs previous 13F -30,000 shares

    2.28% of the 13F portfolio, value $18,866,900.

    13F-HR 0001169069-25-000009 filed by VIKING FUND MANAGEMENT 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 260,000 shares
    Change vs previous 13F +10,000 shares

    1.88% of the 13F portfolio, value $13,673,400.

    13F-HR 0001169069-25-000007 filed by VIKING FUND MANAGEMENT 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 250,000 shares
    Change vs previous 13F 0 shares

    1.65% of the 13F portfolio, value $11,445,000.

    13F-HR 0001169069-25-000004 filed by VIKING FUND MANAGEMENT LLC
    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 250,000 shares
    Change vs previous 13F +20,000 shares

    1.85% of the 13F portfolio, value $11,880,000.

    13F-HR 0001169069-25-000002 filed by VIKING FUND MANAGEMENT LLC
    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 230,000 shares
    Change vs previous 13F not available

    1.69% of the 13F portfolio, value $10,384,500.

    13F-HR 0001169069-24-000080 filed by VIKING FUND MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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