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ACADIAN ASSET MANAGEMENT LLC: BRK-B position timeline

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

ACADIAN ASSET MANAGEMENT LLC held 1,200,239 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,200,239 shares
    Change vs previous 13F -61,407 shares

    0.71% of the 13F portfolio, value $600,557,000.

    13F-HR 0001140361-26-032657 filed by ACADIAN 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 1,261,646 shares
    Change vs previous 13F +29,290 shares

    0.86% of the 13F portfolio, value $604,555,000.

    13F-HR 0001140361-26-020957 filed by ACADIAN 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 1,232,356 shares
    Change vs previous 13F -187,900 shares

    1.02% of the 13F portfolio, value $619,409,000.

    13F-HR 0001140361-26-004564 filed by ACADIAN 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 1,420,256 shares
    Change vs previous 13F +845,405 shares

    1.25% of the 13F portfolio, value $713,968,000.

    13F-HR 0001140361-25-041908 filed by ACADIAN 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 574,851 shares
    Change vs previous 13F -226,878 shares

    0.58% of the 13F portfolio, value $279,229,000.

    13F-HR 0001140361-25-029365 filed by ACADIAN 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 801,729 shares
    Change vs previous 13F -521,095 shares

    1.21% of the 13F portfolio, value $426,957,000.

    13F-HR 0001135428-25-000021 filed by ACADIAN 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 1,322,824 shares
    Change vs previous 13F not available

    1.74% of the 13F portfolio, value $599,577,000.

    13F-HR 0001135428-25-000010 filed by ACADIAN ASSET MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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