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Disclosery

Columbia Asset Management: DTE position timeline

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

Columbia Asset Management held 10,269 DTE 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 10,269 shares
    Change vs previous 13F +31 shares

    0.27% of the 13F portfolio, value $1,564,718.

    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 10,238 shares
    Change vs previous 13F -78 shares

    0.29% of the 13F portfolio, value $1,496,969.

    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 10,316 shares
    Change vs previous 13F -957 shares

    0.24% of the 13F portfolio, value $1,330,591.

    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 11,273 shares
    Change vs previous 13F +1 shares

    0.3% of the 13F portfolio, value $1,594,329.

    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 11,272 shares
    Change vs previous 13F -303 shares

    0.29% of the 13F portfolio, value $1,493,024.

    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 11,575 shares
    Change vs previous 13F -279 shares

    0.33% of the 13F portfolio, value $1,600,490.

    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 11,854 shares
    Change vs previous 13F -273 shares

    0.27% of the 13F portfolio, value $1,431,319.

    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 12,127 shares
    Change vs previous 13F not available

    0.27% of the 13F portfolio, value $1,557,000.

    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).