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BlackRock, Inc.: IOSP position timeline

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

BlackRock, Inc. held 4,381,323 IOSP 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 4,381,323 shares
    Change vs previous 13F +502,348 shares

    0.01% of the 13F portfolio, value $356,595,899.

    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 3,878,975 shares
    Change vs previous 13F +216,652 shares

    <0.01% of the 13F portfolio, value $283,242,788.

    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 3,662,323 shares
    Change vs previous 13F +29,338 shares

    <0.01% of the 13F portfolio, value $280,314,199.

    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 3,632,985 shares
    Change vs previous 13F -29,427 shares

    <0.01% of the 13F portfolio, value $280,321,148.

    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 3,662,412 shares
    Change vs previous 13F -85,314 shares

    0.01% of the 13F portfolio, value $307,972,217.

    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 3,747,726 shares
    Change vs previous 13F -160,221 shares

    0.01% of the 13F portfolio, value $355,097,031.

    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 3,907,947 shares
    Change vs previous 13F +11,506 shares

    0.01% of the 13F portfolio, value $430,108,644.

    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 3,896,441 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $440,648,504.

    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).