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Disclosery

BlackRock, Inc.: UMC position timeline

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

BlackRock, Inc. held 31,544,454 UMC 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 31,544,454 shares
    Change vs previous 13F +4,048,574 shares

    0.01% of the 13F portfolio, value $858,324,604.

    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 27,495,880 shares
    Change vs previous 13F +512,365 shares

    <0.01% of the 13F portfolio, value $246,913,000.

    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 26,983,515 shares
    Change vs previous 13F +2,842,754 shares

    <0.01% of the 13F portfolio, value $212,090,432.

    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 24,140,761 shares
    Change vs previous 13F -176,299 shares

    <0.01% of the 13F portfolio, value $182,986,967.

    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 24,317,060 shares
    Change vs previous 13F +1,519,805 shares

    <0.01% of the 13F portfolio, value $186,025,509.

    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 22,797,255 shares
    Change vs previous 13F -817,786 shares

    <0.01% of the 13F portfolio, value $163,000,371.

    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 23,615,041 shares
    Change vs previous 13F +657,234 shares

    <0.01% of the 13F portfolio, value $153,261,615.

    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 22,957,807 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $193,304,732.

    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).