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Rafferty Asset Management, LLC: UMC position timeline

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

Rafferty Asset Management, LLC held 7,653,378 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 7,653,378 shares
    Change vs previous 13F +2,669,725 shares

    0.47% of the 13F portfolio, value $208,248,415.

    13F-HR 0001999371-26-017909 filed by Rafferty Asset 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 4,983,653 shares
    Change vs previous 13F -1,494,177 shares

    0.18% of the 13F portfolio, value $44,753,204.

    13F-HR 0001999371-26-010796 filed by Rafferty Asset 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 6,477,830 shares
    Change vs previous 13F +257,129 shares

    0.18% of the 13F portfolio, value $50,915,744.

    13F-HR 0001999371-26-003261 filed by Rafferty Asset 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 6,220,701 shares
    Change vs previous 13F -2,182,363 shares

    0.15% of the 13F portfolio, value $47,152,914.

    13F-HR 0001999371-25-017439 filed by Rafferty Asset 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 8,403,064 shares
    Change vs previous 13F +2,826,486 shares

    0.21% of the 13F portfolio, value $64,283,440.

    13F-HR 0001999371-25-011302 filed by Rafferty Asset 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 5,576,578 shares
    Change vs previous 13F -599,160 shares

    0.17% of the 13F portfolio, value $39,872,533.

    13F-HR 0001999371-25-006071 filed by Rafferty Asset 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 6,175,738 shares
    Change vs previous 13F -309,759 shares

    0.14% of the 13F portfolio, value $40,080,540.

    13F-HR 0001999371-25-001622 filed by Rafferty Asset 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 6,485,497 shares
    Change vs previous 13F not available

    0.19% of the 13F portfolio, value $54,607,885.

    13F-HR 0001999371-24-014625 filed by Rafferty Asset Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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