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Disclosery

BlackRock, Inc.: OII position timeline

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

BlackRock, Inc. held 16,403,230 OII shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 16,403,230 shares
    Change vs previous 13F +54,388 shares

    0.01% of the 13F portfolio, value $664,658,871.

    13F-HR 0002012383-26-003238 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).

  2. period ended2026-03-31
    13F 16,348,842 shares
    Change vs previous 13F +345,492 shares

    0.01% of the 13F portfolio, value $579,893,415.

    13F-HR 0002012383-26-001841 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 ended2025-12-31
    13F 16,003,350 shares
    Change vs previous 13F +334,417 shares

    0.01% of the 13F portfolio, value $384,560,495.

    13F-HR 0002012383-26-000920 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 ended2025-09-30
    13F 15,668,933 shares
    Change vs previous 13F -88,297 shares

    0.01% of the 13F portfolio, value $388,276,155.

    13F-HR 0002012383-25-002949 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 ended2025-06-30
    13F 15,757,230 shares
    Change vs previous 13F -879,127 shares

    0.01% of the 13F portfolio, value $326,489,801.

    13F-HR 0001060021-25-000120 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 ended2025-03-31
    13F 16,636,357 shares
    Change vs previous 13F -420,675 shares

    0.01% of the 13F portfolio, value $362,838,945.

    13F-HR 0001576419-25-000869 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 ended2024-12-31
    13F 17,057,032 shares
    Change vs previous 13F +586,310 shares

    0.01% of the 13F portfolio, value $444,847,381.

    13F-HR 0001060021-25-000002 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 ended2024-09-30
    13F 16,470,722 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $409,626,858.

    13F-HR 0001426459-24-000006 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).