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Disclosery

GAMCO Investors (Gabelli): WMB position timeline

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

GAMCO Investors (Gabelli) held 243,325 WMB 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 243,325 shares
    Change vs previous 13F +28,225 shares

    0.12% of the 13F portfolio, value $18,088,781.

    13F-HR 0001140361-26-032509 filed by GABELLI FUNDS 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 215,100 shares
    Change vs previous 13F -45,900 shares

    0.11% of the 13F portfolio, value $15,654,978.

    13F-HR 0001140361-26-021337 filed by GABELLI FUNDS 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 261,000 shares
    Change vs previous 13F +17,900 shares

    0.11% of the 13F portfolio, value $15,688,710.

    13F-HR 0001140361-26-003893 filed by GABELLI FUNDS 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 243,100 shares
    Change vs previous 13F 0 shares

    0.1% of the 13F portfolio, value $15,400,385.

    13F-HR 0001140361-25-041671 filed by GABELLI FUNDS 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 243,100 shares
    Change vs previous 13F +88,000 shares

    0.11% of the 13F portfolio, value $15,269,111.

    13F-HR 0001140361-25-030816 filed by GABELLI FUNDS 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 155,100 shares
    Change vs previous 13F -109,600 shares

    0.07% of the 13F portfolio, value $9,268,776.

    13F-HR 0001140361-25-018974 filed by GABELLI FUNDS 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 264,700 shares
    Change vs previous 13F +6,300 shares

    0.11% of the 13F portfolio, value $14,325,564.

    13F-HR 0001140361-25-004328 filed by GABELLI FUNDS 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 258,400 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $11,795,960.

    13F-HR 0001140361-24-046503 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

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