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Markel Group Inc.: CMCSA position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Markel Group Inc. on CMCSA, newest first. How the timeline and the estimate are built.

Markel Group Inc. held 802,074 CMCSA shares at 2026-06-30 per its 13F-HR filed 2026-07-31.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 802,074 shares
    Change vs previous 13F -159,806 shares

    0.15% of the 13F portfolio, value $19,690,917.

    13F-HR 0001096343-26-000065 filed by Markel Group Inc.
    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 961,880 shares
    Change vs previous 13F 0 shares

    0.23% of the 13F portfolio, value $27,615,574.

    13F-HR 0001096343-26-000044 filed by Markel Group Inc.
    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 961,880 shares
    Change vs previous 13F 0 shares

    0.23% of the 13F portfolio, value $28,750,593.

    13F-HR 0001096343-26-000011 filed by Markel Group Inc.
    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 961,880 shares
    Change vs previous 13F 0 shares

    0.25% of the 13F portfolio, value $30,222,270.

    13F-HR 0001628280-25-047842 filed by Markel Group Inc.
    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 961,880 shares
    Change vs previous 13F 0 shares

    0.29% of the 13F portfolio, value $34,329,497.

    13F-HR 0001096343-25-000124 filed by Markel Group Inc.
    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 961,880 shares
    Change vs previous 13F 0 shares

    0.32% of the 13F portfolio, value $35,493,372.

    13F-HR 0001096343-25-000062 filed by Markel Group Inc.
    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 961,880 shares
    Change vs previous 13F -119,361 shares

    0.32% of the 13F portfolio, value $36,099,356.

    13F-HR 0001096343-25-000011 filed by Markel Group Inc.
    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 1,081,241 shares
    Change vs previous 13F not available

    0.41% of the 13F portfolio, value $45,163,437.

    13F-HR 0001096343-24-000124 filed by Markel Group Inc.
    Filed (acceptance time not in the bulk data set), ingested

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