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Disclosery

BlackRock, Inc.: ATI position timeline

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

BlackRock, Inc. held 18,708,922 ATI 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 18,708,922 shares
    Change vs previous 13F +2,267,269 shares

    0.05% of the 13F portfolio, value $3,687,528,624.

    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 16,441,653 shares
    Change vs previous 13F +1,774,883 shares

    0.04% of the 13F portfolio, value $2,391,602,818.

    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 14,666,770 shares
    Change vs previous 13F -190,685 shares

    0.03% of the 13F portfolio, value $1,683,158,523.

    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 14,857,455 shares
    Change vs previous 13F -89,813 shares

    0.02% of the 13F portfolio, value $1,208,505,389.

    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 14,947,268 shares
    Change vs previous 13F +1,833,340 shares

    0.02% of the 13F portfolio, value $1,290,547,118.

    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 13,113,928 shares
    Change vs previous 13F -4,724,355 shares

    0.01% of the 13F portfolio, value $682,317,675.

    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 17,838,283 shares
    Change vs previous 13F +1,977,587 shares

    0.02% of the 13F portfolio, value $981,819,077.

    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 15,860,696 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $1,061,239,170.

    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).