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Alta Advisers Ltd: BRK-B position timeline

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

Alta Advisers Ltd held 7,135 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 7,135 shares
    Change vs previous 13F -40 shares

    0.81% of the 13F portfolio, value $3,570,283.

    13F-HR 0000904454-26-000442 filed by Alta Advisers Ltd
    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 7,175 shares
    Change vs previous 13F 0 shares

    1.24% of the 13F portfolio, value $3,438,260.

    13F-HR 0000904454-26-000252 filed by Alta Advisers Ltd
    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 7,175 shares
    Change vs previous 13F -2,280 shares

    1.31% of the 13F portfolio, value $3,606,514.

    13F-HR 0000904454-26-000078 filed by Alta Advisers Ltd
    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 9,455 shares
    Change vs previous 13F 0 shares

    1.45% of the 13F portfolio, value $4,753,407.

    13F-HR 0000904454-25-000547 filed by Alta Advisers Ltd
    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 9,455 shares
    Change vs previous 13F 0 shares

    1.63% of the 13F portfolio, value $4,592,955.

    13F-HR 0000904454-25-000381 filed by Alta Advisers Ltd
    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 9,455 shares
    Change vs previous 13F +3,400 shares

    2.14% of the 13F portfolio, value $5,035,544.

    13F-HR 0000904454-25-000224 filed by Alta Advisers Ltd
    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 6,055 shares
    Change vs previous 13F +1,069 shares

    1.73% of the 13F portfolio, value $2,744,610.

    13F-HR 0000904454-25-000135 filed by Alta Advisers Ltd
    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 4,986 shares
    Change vs previous 13F not available

    1.05% of the 13F portfolio, value $2,294,856.

    13F-HR 0000904454-24-000580 filed by Alta Advisers Ltd
    Filed (acceptance time not in the bulk data set), ingested

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