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Auto-Owners Insurance Co: BRK-B position timeline

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

Auto-Owners Insurance Co held 9,655 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-15.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 9,655 shares
    Change vs previous 13F -3 shares

    0.11% of the 13F portfolio, value $4,831,265.

    13F-HR 0001964189-26-000004 filed by Auto-Owners Insurance Co
    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 9,658 shares
    Change vs previous 13F -3 shares

    0.1% of the 13F portfolio, value $4,628,114.

    13F-HR 0001964189-26-000003 filed by Auto-Owners Insurance Co
    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/A 9,661 shares
    Change vs previous 13F +81 shares

    0.1% of the 13F portfolio, value $4,856,102.

    13F-HR/A 0001964189-26-000002 filed by Auto-Owners Insurance Co
    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/A 9,580 shares
    Change vs previous 13F 0 shares

    0.12% of the 13F portfolio, value $4,816,249.

    13F-HR/A 0001964189-25-000005 filed by Auto-Owners Insurance Co
    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 9,580 shares
    Change vs previous 13F +7,190 shares

    0.1% of the 13F portfolio, value $4,653,677.

    13F-HR 0001964189-25-000002 filed by Auto-Owners Insurance Co
    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 2,390 shares
    Change vs previous 13F -7,190 shares

    0.01% of the 13F portfolio, value $554,098.

    13F-HR 0001964189-25-000001 filed by Auto-Owners Insurance Co
    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 9,580 shares
    Change vs previous 13F 0 shares

    0.1% of the 13F portfolio, value $4,342,422.

    13F-HR 0001964188-25-000003 filed by Auto-Owners Insurance Co
    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 9,580 shares
    Change vs previous 13F not available

    0.11% of the 13F portfolio, value $4,409,291.

    13F-HR 0001964189-24-000005 filed by Auto-Owners Insurance Co
    Filed (acceptance time not in the bulk data set), ingested

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