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Disclosery

Round Rock Advisors LLC: BRK-A position timeline

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

Round Rock Advisors LLC held 18 BRK-A 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 18 shares
    Change vs previous 13F -1 shares

    1.74% of the 13F portfolio, value $13,479,300.

    13F-HR 0001951757-26-001257 filed by Round Rock 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 19 shares
    Change vs previous 13F 0 shares

    2.09% of the 13F portfolio, value $13,644,660.

    13F-HR 0001951757-26-000878 filed by Round Rock 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/A 19 shares
    Change vs previous 13F -1 shares

    2.16% of the 13F portfolio, value $14,341,200.

    13F-HR/A 0001951757-26-000520 filed by Round Rock 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 20 shares
    Change vs previous 13F 0 shares

    2.39% of the 13F portfolio, value $15,084,000.

    13F-HR 0001951757-25-001443 filed by Round Rock 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 20 shares
    Change vs previous 13F 0 shares

    2.51% of the 13F portfolio, value $14,576,000.

    13F-HR 0001951757-25-001039 filed by Round Rock 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 20 shares
    Change vs previous 13F 0 shares

    2.96% of the 13F portfolio, value $15,968,832.

    13F-HR 0001951757-25-000487 filed by Round Rock 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 20 shares
    Change vs previous 13F 0 shares

    2.79% of the 13F portfolio, value $13,618,400.

    13F-HR 0001951757-25-000115 filed by Round Rock 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 20 shares
    Change vs previous 13F not available

    3.23% of the 13F portfolio, value $13,823,600.

    13F-HR 0001951757-24-001162 filed by Round Rock Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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