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BlackRock, Inc.: BRK-B position timeline

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

BlackRock, Inc. held 121,183,112 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 121,183,112 shares
    Change vs previous 13F -24,535 shares

    0.9% of the 13F portfolio, value $60,638,817,437.

    13F-HR 0002012383-26-003238 filed by BlackRock, 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 121,207,647 shares
    Change vs previous 13F +13,914 shares

    1.02% of the 13F portfolio, value $58,082,703,896.

    13F-HR 0002012383-26-001841 filed by BlackRock, 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 121,193,733 shares
    Change vs previous 13F +6,572,332 shares

    1.03% of the 13F portfolio, value $60,918,030,137.

    13F-HR 0002012383-26-000920 filed by BlackRock, 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 114,621,401 shares
    Change vs previous 13F +1,096,954 shares

    1.02% of the 13F portfolio, value $57,624,763,365.

    13F-HR 0002012383-25-002949 filed by BlackRock, 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 113,524,447 shares
    Change vs previous 13F +1,964,659 shares

    1.06% of the 13F portfolio, value $55,146,770,481.

    13F-HR 0001060021-25-000120 filed by BlackRock, 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 111,559,788 shares
    Change vs previous 13F +1,158,376 shares

    1.25% of the 13F portfolio, value $59,414,512,045.

    13F-HR 0001576419-25-000869 filed by BlackRock, 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 110,401,412 shares
    Change vs previous 13F +551,266 shares

    1.01% of the 13F portfolio, value $50,042,752,335.

    13F-HR 0001060021-25-000002 filed by BlackRock, 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 109,850,146 shares
    Change vs previous 13F not available

    1.06% of the 13F portfolio, value $50,559,628,268.

    13F-HR 0001426459-24-000006 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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