Skip to content
Disclosery

Cornerstone Advisors, LLC: BRK-B position timeline

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

Cornerstone Advisors, LLC held 37,892 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 37,892 shares
    Change vs previous 13F +10,942 shares

    0.62% of the 13F portfolio, value $18,960,778.

    13F-HR 0001398344-26-013809 filed by Cornerstone Advisors, 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 26,950 shares
    Change vs previous 13F -14,751 shares

    0.48% of the 13F portfolio, value $12,914,440.

    13F-HR 0001398344-26-008799 filed by Cornerstone Advisors, 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 41,701 shares
    Change vs previous 13F -47,099 shares

    0.7% of the 13F portfolio, value $20,961,008.

    13F-HR 0001398344-26-003109 filed by Cornerstone Advisors, 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 88,800 shares
    Change vs previous 13F 0 shares

    1.47% of the 13F portfolio, value $44,643,312.

    13F-HR 0001398344-25-020535 filed by Cornerstone Advisors, 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 88,800 shares
    Change vs previous 13F +6,300 shares

    1.48% of the 13F portfolio, value $43,136,376.

    13F-HR 0001398344-25-014846 filed by Cornerstone Advisors, 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 82,500 shares
    Change vs previous 13F 0 shares

    1.89% of the 13F portfolio, value $43,937,850.

    13F-HR 0001398344-25-009115 filed by Cornerstone Advisors, 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 82,500 shares
    Change vs previous 13F +1,800 shares

    1.49% of the 13F portfolio, value $37,395,600.

    13F-HR 0001398344-25-002231 filed by Cornerstone Advisors, LLC
    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 80,700 shares
    Change vs previous 13F not available

    1.47% of the 13F portfolio, value $37,142,982.

    13F-HR 0001398344-24-020355 filed by Cornerstone Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

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