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BlackRock Inc.: CCOI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BlackRock Inc. on CCOI, newest first. How the timeline and the estimate are built.

BlackRock Inc. held 6,814,238 CCOI shares at 2024-06-30 per its 13F-HR filed 2024-08-13, and reported 3,932,477 shares, 7.7%, in a 13G/A filed 2026-10-05.

Estimated current stake: 3,932,477 shares, 7.7% of the class

Estimated from 13G/A of 2026-10-05. As of 2026-09-30, 13G/A 0002012383-26-003317.

Shares are the reporting group's aggregate and may include entities that do not file a 13F.

Percent of portfolio stays on the 13F for 2024-06-30.

  1. event date2026-09-30
    13G/A 3,932,477 shares
    Share basis changed not comparable

    7.7% of the class. Different basis (group aggregate from 13G/A).

    13G/A 0002012383-26-003317 filed by BlackRock, Inc.
    Accepted , ingested

    A 13D/G states the aggregate of its reporting persons, which may include entities that do not file a 13F.

  2. period ended2024-06-30
    13F 6,814,238 shares
    Change vs previous 13F -281,729 shares

    0.01% of the 13F portfolio, value $384,595,588.

    13F-HR 0001086364-24-008417 filed by BlackRock Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2024-03-31
    13F 7,095,967 shares
    Change vs previous 13F -240,074 shares

    0.01% of the 13F portfolio, value $463,579,496.

    13F-HR 0001086364-24-007638 filed by BlackRock Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2023-12-31
    13F 7,336,041 shares
    Change vs previous 13F +314,792 shares

    0.01% of the 13F portfolio, value $557,979,246.

    13F-HR 0001086364-24-006999 filed by BlackRock Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2023-09-30
    13F 7,021,249 shares
    Change vs previous 13F -224,502 shares

    0.01% of the 13F portfolio, value $434,615,286.

    13F-HR 0001306550-23-010335 filed by BlackRock Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2023-06-30
    13F 7,245,751 shares
    Change vs previous 13F -51,691 shares

    0.01% of the 13F portfolio, value $487,566,554.

    13F-HR 0001306550-23-009732 filed by BlackRock Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2023-03-31
    13F 7,297,442 shares
    Change vs previous 13F -176,486 shares

    0.01% of the 13F portfolio, value $464,992,976.

    13F-HR 0001086364-23-000015 filed by BlackRock Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2022-12-31
    13F 7,473,928 shares
    Change vs previous 13F +83,066 shares

    0.01% of the 13F portfolio, value $426,611,813.

    13F-HR 0000913414-23-000035 filed by BlackRock Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  9. period ended2022-09-30
    13F 7,390,862 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $385,506,000.

    13F-HR 0001086364-22-000004 filed by BlackRock Inc.
    Filed (acceptance time not in the bulk data set), ingested

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