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CHECK CAPITAL MANAGEMENT INC/CA: BRK-B position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of CHECK CAPITAL MANAGEMENT INC/CA on BRK-B, newest first. How the timeline and the estimate are built.

CHECK CAPITAL MANAGEMENT INC/CA held 1,119,075 BRK-B shares at 2026-06-30 per its 13F-HR/A filed 2026-08-05.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 1,119,075 shares
    Change vs previous 13F +10,685 shares

    31.67% of the 13F portfolio, value $559,973,704.

    13F-HR/A 0001032814-26-000006 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,108,390 shares
    Change vs previous 13F +5,882 shares

    32.75% of the 13F portfolio, value $531,140,355.

    13F-HR 0001032814-26-000004 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,102,508 shares
    Change vs previous 13F +27,348 shares

    33.13% of the 13F portfolio, value $554,175,532.

    13F-HR 0001032814-26-000001 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,075,160 shares
    Change vs previous 13F +3,095 shares

    34.23% of the 13F portfolio, value $540,525,824.

    13F-HR 0001032814-25-000007 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,072,065 shares
    Change vs previous 13F +10,326 shares

    34.33% of the 13F portfolio, value $520,776,904.

    13F-HR 0001032814-25-000005 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,061,739 shares
    Change vs previous 13F -40,203 shares

    36.77% of the 13F portfolio, value $565,460,835.

    13F-HR 0001032814-25-000003 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,101,942 shares
    Change vs previous 13F -12,526 shares

    33.06% of the 13F portfolio, value $499,488,323.

    13F-HR 0001032814-25-000002 filed by CHECK CAPITAL MANAGEMENT INC/CA
    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 1,114,468 shares
    Change vs previous 13F not available

    36.52% of the 13F portfolio, value $512,944,945.

    13F-HR 0001032814-24-000011 filed by CHECK CAPITAL MANAGEMENT INC/CA
    Filed (acceptance time not in the bulk data set), ingested

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