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Disclosery

Columbia Asset Management: RIO position timeline

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

Columbia Asset Management held 13,418 RIO 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 13,418 shares
    Change vs previous 13F +1,173 shares

    0.22% of the 13F portfolio, value $1,273,793.

    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 12,245 shares
    Change vs previous 13F +2,155 shares

    0.22% of the 13F portfolio, value $1,142,371.

    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 10,090 shares
    Change vs previous 13F +1,353 shares

    0.14% of the 13F portfolio, value $807,532.

    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 8,737 shares
    Change vs previous 13F +770 shares

    0.11% of the 13F portfolio, value $576,754.

    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 7,967 shares
    Change vs previous 13F +1,503 shares

    0.09% of the 13F portfolio, value $464,725.

    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 6,464 shares
    Change vs previous 13F -1,600 shares

    0.08% of the 13F portfolio, value $388,339.

    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 8,064 shares
    Change vs previous 13F -2,340 shares

    0.09% of the 13F portfolio, value $474,227.

    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 10,404 shares
    Change vs previous 13F not available

    0.13% of the 13F portfolio, value $740,000.

    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).