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Disclosery

HARBOR INVESTMENT ADVISORY, LLC: BRK-B position timeline

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

HARBOR INVESTMENT ADVISORY, LLC held 63,200 BRK-B shares at 2026-09-30 per its 13F-HR filed 2026-10-13.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 63,200 shares
    Change vs previous 13F -840 shares

    2.14% of the 13F portfolio, value $31,470,428.

    13F-HR 0001468792-26-000011 filed by HARBOR INVESTMENT ADVISORY, LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 64,040 shares
    Change vs previous 13F -167 shares

    2.24% of the 13F portfolio, value $32,044,738.

    13F-HR 0001468792-26-000006 filed by HARBOR INVESTMENT ADVISORY, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 64,207 shares
    Change vs previous 13F -172,792 shares

    2.43% of the 13F portfolio, value $30,768,006.

    13F-HR 0001468792-26-000005 filed by HARBOR INVESTMENT ADVISORY, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 236,999 shares
    Change vs previous 13F +305 shares

    2.52% of the 13F portfolio, value $33,567,641.

    13F-HR 0001468792-26-000001 filed by HARBOR INVESTMENT ADVISORY, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 236,694 shares
    Change vs previous 13F +3,955 shares

    2.77% of the 13F portfolio, value $33,420,285.

    13F-HR 0001468792-25-000006 filed by HARBOR INVESTMENT ADVISORY, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 232,739 shares
    Change vs previous 13F +379 shares

    2.71% of the 13F portfolio, value $30,376,719.

    13F-HR 0001468792-25-000005 filed by HARBOR INVESTMENT ADVISORY, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F 232,360 shares
    Change vs previous 13F +801 shares

    3.22% of the 13F portfolio, value $33,085,612.

    13F-HR 0001468792-25-000004 filed by HARBOR INVESTMENT ADVISORY, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 231,559 shares
    Change vs previous 13F not available

    2.6% of the 13F portfolio, value $27,821,555.

    13F-HR 0001468792-25-000001 filed by HARBOR INVESTMENT ADVISORY, LLC
    Filed (acceptance time not in the bulk data set), ingested

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