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Disclosery

HORIZON KINETICS ASSET MANAGEMENT LLC: BRK-B position timeline

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

HORIZON KINETICS ASSET MANAGEMENT LLC held 37,231 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 37,231 shares
    Change vs previous 13F -802 shares

    0.21% of the 13F portfolio, value $18,630,020.

    13F-HR 0001398344-26-014047 filed by HORIZON KINETICS ASSET MANAGEMENT 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 38,033 shares
    Change vs previous 13F +45 shares

    0.2% of the 13F portfolio, value $18,225,413.

    13F-HR 0001398344-26-009239 filed by HORIZON KINETICS ASSET MANAGEMENT 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 37,988 shares
    Change vs previous 13F -2,361 shares

    0.26% of the 13F portfolio, value $19,094,667.

    13F-HR 0001056823-26-000007 filed by HORIZON KINETICS ASSET MANAGEMENT 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 40,349 shares
    Change vs previous 13F -2,177 shares

    0.25% of the 13F portfolio, value $20,285,056.

    13F-HR 0001056823-25-000029 filed by HORIZON KINETICS ASSET MANAGEMENT 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 42,526 shares
    Change vs previous 13F -595 shares

    0.25% of the 13F portfolio, value $20,657,855.

    13F-HR 0001056823-25-000019 filed by HORIZON KINETICS ASSET MANAGEMENT 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 43,121 shares
    Change vs previous 13F -479 shares

    0.26% of the 13F portfolio, value $22,965,382.

    13F-HR 0001056823-25-000010 filed by HORIZON KINETICS ASSET MANAGEMENT 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 43,600 shares
    Change vs previous 13F -1,378 shares

    0.25% of the 13F portfolio, value $19,763,008.

    13F-HR 0001056823-25-000001 filed by HORIZON KINETICS ASSET MANAGEMENT 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 44,978 shares
    Change vs previous 13F not available

    0.31% of the 13F portfolio, value $20,701,347.

    13F-HR 0001056823-24-000019 filed by HORIZON KINETICS ASSET MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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