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Disclosery

Stolper Co: BRK-B position timeline

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

Stolper Co held 39,843 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 39,843 shares
    Change vs previous 13F -43,796 shares

    5.15% of the 13F portfolio, value $19,937,000.

    13F-HR 0001808195-26-000003 filed by Stolper 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 83,639 shares
    Change vs previous 13F +45,781 shares

    0.24% of the 13F portfolio, value $845,000.

    13F-HR 0001808195-26-000002 filed by Stolper 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 37,858 shares
    Change vs previous 13F +139 shares

    5.61% of the 13F portfolio, value $19,029,000.

    13F-HR 0001808195-26-000001 filed by Stolper 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 37,719 shares
    Change vs previous 13F -533 shares

    5.75% of the 13F portfolio, value $18,963,000.

    13F-HR/A 0001808195-25-000011 filed by Stolper 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 38,252 shares
    Change vs previous 13F -803 shares

    6.1% of the 13F portfolio, value $18,582,000.

    13F-HR 0001808195-25-000008 filed by Stolper 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 39,055 shares
    Change vs previous 13F -670 shares

    6.82% of the 13F portfolio, value $20,800,000.

    13F-HR 0001808195-25-000006 filed by Stolper 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 39,725 shares
    Change vs previous 13F -477 shares

    6% of the 13F portfolio, value $18,007,000.

    13F-HR 0001808195-25-000001 filed by Stolper 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 40,202 shares
    Change vs previous 13F not available

    6.05% of the 13F portfolio, value $18,503,000.

    13F-HR 0001808195-24-000010 filed by Stolper Co
    Filed (acceptance time not in the bulk data set), ingested

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