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Disclosery

Cambridge Advisors Inc.: BRK-B position timeline

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

Cambridge Advisors Inc. held 16,206 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-16.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 16,206 shares
    Change vs previous 13F -639 shares

    1.39% of the 13F portfolio, value $8,109,320.

    13F-HR 0001214659-26-008644 filed by Cambridge Advisors Inc.
    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 16,845 shares
    Change vs previous 13F -659 shares

    1.57% of the 13F portfolio, value $8,072,124.

    13F-HR 0001214659-26-004746 filed by Cambridge Advisors Inc.
    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 17,504 shares
    Change vs previous 13F -686 shares

    1.67% of the 13F portfolio, value $8,798,386.

    13F-HR 0001214659-26-000687 filed by Cambridge Advisors Inc.
    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 18,190 shares
    Change vs previous 13F -284 shares

    1.79% of the 13F portfolio, value $9,144,841.

    13F-HR 0001214659-25-014970 filed by Cambridge Advisors Inc.
    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 18,474 shares
    Change vs previous 13F -399 shares

    1.88% of the 13F portfolio, value $8,974,115.

    13F-HR 0001214659-25-010442 filed by Cambridge Advisors Inc.
    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 18,873 shares
    Change vs previous 13F -45 shares

    2.2% of the 13F portfolio, value $10,051,382.

    13F-HR 0001214659-25-006340 filed by Cambridge Advisors Inc.
    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 18,918 shares
    Change vs previous 13F +170 shares

    1.91% of the 13F portfolio, value $8,575,151.

    13F-HR 0001214659-25-000800 filed by Cambridge Advisors Inc.
    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 18,748 shares
    Change vs previous 13F not available

    1.89% of the 13F portfolio, value $8,628,954.

    13F-HR 0001214659-24-017836 filed by Cambridge Advisors Inc.
    Filed (acceptance time not in the bulk data set), ingested

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