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Disclosery

AMERICAN CENTURY COMPANIES INC: BRK-B position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of AMERICAN CENTURY COMPANIES INC on BRK-B, newest first. How the timeline and the estimate are built.

AMERICAN CENTURY COMPANIES INC held 576,554 BRK-B 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 576,554 shares
    Change vs previous 13F +25,745 shares

    0.13% of the 13F portfolio, value $288,501,856.

    13F-HR 0000748054-26-000005 filed by AMERICAN CENTURY COMPANIES 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 550,809 shares
    Change vs previous 13F +78,307 shares

    0.14% of the 13F portfolio, value $263,947,673.

    13F-HR 0000748054-26-000002 filed by AMERICAN CENTURY COMPANIES 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 472,502 shares
    Change vs previous 13F +26,462 shares

    0.12% of the 13F portfolio, value $237,503,130.

    13F-HR 0000748054-26-000001 filed by AMERICAN CENTURY COMPANIES 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 446,040 shares
    Change vs previous 13F +13,666 shares

    0.11% of the 13F portfolio, value $224,242,149.

    13F-HR 0000748054-25-000009 filed by AMERICAN CENTURY COMPANIES 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 432,374 shares
    Change vs previous 13F -10,771 shares

    0.11% of the 13F portfolio, value $210,034,318.

    13F-HR 0001085146-25-004910 filed by AMERICAN CENTURY COMPANIES 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 443,145 shares
    Change vs previous 13F -42,294 shares

    0.14% of the 13F portfolio, value $236,010,164.

    13F-HR 0001085146-25-003039 filed by AMERICAN CENTURY COMPANIES 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 485,439 shares
    Change vs previous 13F -82,403 shares

    0.13% of the 13F portfolio, value $220,039,790.

    13F-HR 0001085146-25-000985 filed by AMERICAN CENTURY COMPANIES 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 567,842 shares
    Change vs previous 13F not available

    0.15% of the 13F portfolio, value $261,354,959.

    13F-HR 0001085146-24-005525 filed by AMERICAN CENTURY COMPANIES INC
    Filed (acceptance time not in the bulk data set), ingested

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