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TRAPHAGEN INVESTMENT ADVISORS LLC: BRK-A position timeline

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

TRAPHAGEN INVESTMENT ADVISORS LLC held 14 BRK-A shares at 2026-09-30 per its 13F-HR filed 2026-10-14.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 14 shares
    Change vs previous 13F 0 shares

    0.72% of the 13F portfolio, value $10,458,070.

    13F-HR 0002023380-26-000005 filed by TRAPHAGEN INVESTMENT ADVISORS LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 14 shares
    Change vs previous 13F 0 shares

    0.75% of the 13F portfolio, value $10,483,900.

    13F-HR 0002023380-26-000003 filed by TRAPHAGEN INVESTMENT 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 ended2026-03-31
    13F 14 shares
    Change vs previous 13F 0 shares

    0.81% of the 13F portfolio, value $10,053,960.

    13F-HR 0002023380-26-000002 filed by TRAPHAGEN INVESTMENT 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 ended2025-12-31
    13F 14 shares
    Change vs previous 13F 0 shares

    0.87% of the 13F portfolio, value $10,567,200.

    13F-HR 0002023380-26-000001 filed by TRAPHAGEN INVESTMENT 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 ended2025-09-30
    13F 14 shares
    Change vs previous 13F 0 shares

    0.91% of the 13F portfolio, value $10,558,800.

    13F-HR 0002023380-25-000007 filed by TRAPHAGEN INVESTMENT 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 ended2025-06-30
    13F 14 shares
    Change vs previous 13F 0 shares

    0.97% of the 13F portfolio, value $10,203,200.

    13F-HR 0002023380-25-000006 filed by TRAPHAGEN INVESTMENT 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 ended2025-03-31
    13F 14 shares
    Change vs previous 13F 0 shares

    1.17% of the 13F portfolio, value $11,178,182.

    13F-HR 0002023380-25-000002 filed by TRAPHAGEN INVESTMENT 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 ended2024-12-31
    13F 14 shares
    Change vs previous 13F not available

    0.97% of the 13F portfolio, value $9,532,880.

    13F-HR 0002023380-25-000001 filed by TRAPHAGEN INVESTMENT ADVISORS LLC
    Filed (acceptance time not in the bulk data set), ingested

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