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BlackRock, Inc.: COST position timeline

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

BlackRock, Inc. held 34,202,834 COST 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 34,202,834 shares
    Change vs previous 13F -744,206 shares

    0.48% of the 13F portfolio, value $31,995,724,771.

    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 34,947,040 shares
    Change vs previous 13F -152,481 shares

    0.61% of the 13F portfolio, value $34,822,278,793.

    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 35,099,521 shares
    Change vs previous 13F +317,592 shares

    0.51% of the 13F portfolio, value $30,267,721,230.

    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 34,781,929 shares
    Change vs previous 13F -801,895 shares

    0.57% of the 13F portfolio, value $32,195,196,993.

    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 35,583,824 shares
    Change vs previous 13F +651,656 shares

    0.67% of the 13F portfolio, value $35,225,851,339.

    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 34,932,168 shares
    Change vs previous 13F +170,677 shares

    0.7% of the 13F portfolio, value $33,038,146,486.

    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 34,761,491 shares
    Change vs previous 13F +1,205,914 shares

    0.65% of the 13F portfolio, value $31,850,911,391.

    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 33,555,577 shares
    Change vs previous 13F not available

    0.63% of the 13F portfolio, value $29,747,689,988.

    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).