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Columbia Asset Management: CMCSA position timeline

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

Columbia Asset Management held 31,050 CMCSA 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 31,050 shares
    Change vs previous 13F +4,776 shares

    0.13% of the 13F portfolio, value $762,278.

    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 26,274 shares
    Change vs previous 13F +3,405 shares

    0.14% of the 13F portfolio, value $754,327.

    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 22,869 shares
    Change vs previous 13F +8,040 shares

    0.12% of the 13F portfolio, value $683,554.

    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 14,829 shares
    Change vs previous 13F +540 shares

    0.09% of the 13F portfolio, value $465,927.

    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 14,289 shares
    Change vs previous 13F +1,350 shares

    0.1% of the 13F portfolio, value $509,974.

    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 12,939 shares
    Change vs previous 13F +40 shares

    0.1% of the 13F portfolio, value $477,449.

    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 12,899 shares
    Change vs previous 13F -810 shares

    0.09% of the 13F portfolio, value $484,099.

    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 13,709 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $573,000.

    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).