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MILLENNIUM MANAGEMENT LLC: UMC position timeline

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

MILLENNIUM MANAGEMENT LLC held 505,576 UMC shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 505,576 shares
    Change vs previous 13F -1,264,553 shares

    0.01% of the 13F portfolio, value $13,756,723.

    13F-HR 0001273087-26-000007 filed by MILLENNIUM MANAGEMENT LLC
    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 1,770,129 shares
    Change vs previous 13F +1,074,730 shares

    0.01% of the 13F portfolio, value $15,895,758.

    13F-HR 0001273087-26-000004 filed by MILLENNIUM MANAGEMENT LLC
    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 695,399 shares
    Change vs previous 13F +383,488 shares

    <0.01% of the 13F portfolio, value $5,465,836.

    13F-HR 0001273087-26-000002 filed by MILLENNIUM MANAGEMENT LLC
    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 311,911 shares
    Change vs previous 13F +253,131 shares

    <0.01% of the 13F portfolio, value $2,364,285.

    13F-HR 0001273087-25-000034 filed by MILLENNIUM MANAGEMENT LLC
    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 58,780 shares
    Change vs previous 13F -7,834,768 shares

    <0.01% of the 13F portfolio, value $449,667.

    13F-HR 0001273087-25-000028 filed by MILLENNIUM MANAGEMENT LLC
    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 7,893,548 shares
    Change vs previous 13F -6,435,845 shares

    0.05% of the 13F portfolio, value $56,438,868.

    13F-HR 0001273087-25-000019 filed by MILLENNIUM MANAGEMENT LLC
    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 14,329,393 shares
    Change vs previous 13F +13,880,446 shares

    0.08% of the 13F portfolio, value $92,997,761.

    13F-HR 0001273087-25-000015 filed by MILLENNIUM MANAGEMENT LLC
    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 448,947 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $3,780,134.

    13F-HR 0001273087-24-000118 filed by MILLENNIUM MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).