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RITHOLTZ WEALTH MANAGEMENT: UMC position timeline

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

RITHOLTZ WEALTH MANAGEMENT held 100,009 UMC shares at 2026-06-30 per its 13F-HR/A filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F/A 100,009 shares
    Change vs previous 13F +16,299 shares

    0.04% of the 13F portfolio, value $2,721,258.

    13F-HR/A 0001698218-26-000006 filed by RITHOLTZ WEALTH MANAGEMENT
    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 83,710 shares
    Change vs previous 13F +580 shares

    0.01% of the 13F portfolio, value $751,720.

    13F-HR 0001698218-26-000003 filed by RITHOLTZ WEALTH MANAGEMENT
    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 83,130 shares
    Change vs previous 13F -191 shares

    0.01% of the 13F portfolio, value $653,406.

    13F-HR 0001698218-26-000001 filed by RITHOLTZ WEALTH MANAGEMENT
    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 83,321 shares
    Change vs previous 13F -4,342 shares

    0.01% of the 13F portfolio, value $631,573.

    13F-HR 0001698218-25-000004 filed by RITHOLTZ WEALTH MANAGEMENT
    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 87,663 shares
    Change vs previous 13F +2,020 shares

    0.01% of the 13F portfolio, value $670,625.

    13F-HR 0001085146-25-004188 filed by RITHOLTZ WEALTH MANAGEMENT
    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 85,643 shares
    Change vs previous 13F -16,114 shares

    0.02% of the 13F portfolio, value $612,351.

    13F-HR 0001085146-25-002136 filed by RITHOLTZ WEALTH MANAGEMENT
    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 101,757 shares
    Change vs previous 13F -8,915 shares

    0.02% of the 13F portfolio, value $660,403.

    13F-HR 0001085146-25-000201 filed by RITHOLTZ WEALTH MANAGEMENT
    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 110,672 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $931,855.

    13F-HR 0001085146-24-004785 filed by RITHOLTZ WEALTH MANAGEMENT
    Filed (acceptance time not in the bulk data set), ingested

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