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HORIZON KINETICS ASSET MANAGEMENT LLC: WMB position timeline

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

HORIZON KINETICS ASSET MANAGEMENT LLC held 128,678 WMB shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 128,678 shares
    Change vs previous 13F -9,623 shares

    0.11% of the 13F portfolio, value $9,565,929.

    13F-HR 0001398344-26-014047 filed by HORIZON KINETICS ASSET 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 138,301 shares
    Change vs previous 13F +980 shares

    0.11% of the 13F portfolio, value $10,065,553.

    13F-HR 0001398344-26-009239 filed by HORIZON KINETICS ASSET 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 137,321 shares
    Change vs previous 13F -4,613 shares

    0.11% of the 13F portfolio, value $8,254,376.

    13F-HR 0001056823-26-000007 filed by HORIZON KINETICS ASSET 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 141,934 shares
    Change vs previous 13F -29,981 shares

    0.11% of the 13F portfolio, value $8,991,525.

    13F-HR 0001056823-25-000029 filed by HORIZON KINETICS ASSET 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 171,915 shares
    Change vs previous 13F -750 shares

    0.13% of the 13F portfolio, value $10,797,981.

    13F-HR 0001056823-25-000019 filed by HORIZON KINETICS ASSET 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 172,665 shares
    Change vs previous 13F -225 shares

    0.12% of the 13F portfolio, value $10,318,460.

    13F-HR 0001056823-25-000010 filed by HORIZON KINETICS ASSET 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 172,890 shares
    Change vs previous 13F -4,395 shares

    0.12% of the 13F portfolio, value $9,356,807.

    13F-HR 0001056823-25-000001 filed by HORIZON KINETICS ASSET 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 177,285 shares
    Change vs previous 13F not available

    0.12% of the 13F portfolio, value $8,093,060.

    13F-HR 0001056823-24-000019 filed by HORIZON KINETICS ASSET MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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