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Disclosery

Corundum Group, Inc.: UNH position timeline

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

Corundum Group, Inc. held 0 UNH shares at 2026-03-31 per its 13F-HR filed 2026-04-20.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -637 shares

    13F-HR 0001486083-26-000002 filed by Corundum Group, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 637 shares
    Change vs previous 13F -40 shares

    0.07% of the 13F portfolio, value $210,280.

    13F-HR 0001486083-26-000001 filed by Corundum Group, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-09-30
    13F 677 shares
    Change vs previous 13F -52 shares

    0.1% of the 13F portfolio, value $233,768.

    13F-HR 0001486083-25-000006 filed by Corundum Group, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 729 shares
    Change vs previous 13F -1,718 shares

    0.1% of the 13F portfolio, value $227,426.

    13F-HR 0001486083-25-000005 filed by Corundum Group, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 2,447 shares
    Change vs previous 13F -892 shares

    0.61% of the 13F portfolio, value $1,281,616.

    13F-HR 0001486083-25-000004 filed by Corundum Group, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-12-31
    13F 3,339 shares
    Change vs previous 13F +1,133 shares

    0.63% of the 13F portfolio, value $1,689,067.

    13F-HR 0001486083-25-000001 filed by Corundum Group, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-09-30
    13F 2,206 shares
    Change vs previous 13F not available

    0.59% of the 13F portfolio, value $1,289,804.

    13F-HR 0001486083-24-000004 filed by Corundum Group, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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