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Columbia Asset Management: AMZN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Columbia Asset Management on AMZN, newest first. How the timeline and the estimate are built.

Columbia Asset Management held 80,573 AMZN shares at 2026-06-30 per its 13F-HR filed 2026-07-21.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 80,573 shares
    Change vs previous 13F -3,916 shares

    3.34% of the 13F portfolio, value $19,203,860.

    13F-HR 0002085853-26-000792 filed by Columbia Asset Management
    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 84,489 shares
    Change vs previous 13F +148 shares

    3.35% of the 13F portfolio, value $17,596,603.

    13F-HR 0002085853-26-000430 filed by Columbia Asset Management
    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 84,341 shares
    Change vs previous 13F -997 shares

    3.46% of the 13F portfolio, value $19,467,677.

    13F-HR 0002085853-26-000122 filed by Columbia Asset Management
    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 85,338 shares
    Change vs previous 13F -512 shares

    3.51% of the 13F portfolio, value $18,737,748.

    13F-HR 0002085853-25-000221 filed by Columbia Asset Management
    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 85,850 shares
    Change vs previous 13F -699 shares

    3.7% of the 13F portfolio, value $18,834,715.

    13F-HR 0001667731-25-000872 filed by Columbia Asset Management
    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 86,549 shares
    Change vs previous 13F -3,959 shares

    3.35% of the 13F portfolio, value $16,466,885.

    13F-HR 0001667731-25-000412 filed by Columbia Asset Management
    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 90,508 shares
    Change vs previous 13F -6,881 shares

    3.8% of the 13F portfolio, value $19,856,634.

    13F-HR 0001667731-25-000251 filed by Columbia Asset Management
    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 97,389 shares
    Change vs previous 13F not available

    3.16% of the 13F portfolio, value $18,147,000.

    13F-HR 0001585047-24-000004 filed by Columbia Asset Management
    Filed (acceptance time not in the bulk data set), ingested

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