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VIKING FUND MANAGEMENT LLC: WMB position timeline

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

VIKING FUND MANAGEMENT LLC held 354,000 WMB 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 354,000 shares
    Change vs previous 13F +114,000 shares

    2.36% of the 13F portfolio, value $26,316,360.

    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 240,000 shares
    Change vs previous 13F +200,000 shares

    1.79% of the 13F portfolio, value $17,467,200.

    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 40,000 shares
    Change vs previous 13F not available

    0.28% of the 13F portfolio, value $2,404,400.

    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).