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Disclosery

Corundum Group, Inc.: IWF position timeline

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

Corundum Group, Inc. held 341,716 IWF 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 341,716 shares
    Change vs previous 13F +256,287 shares

    12.59% of the 13F portfolio, value $42,430,876.

    13F-HR 0001486083-26-000003 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).

  2. period ended2026-03-31
    13F 85,429 shares
    Change vs previous 13F +9,297 shares

    12.17% of the 13F portfolio, value $36,426,926.

    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).

  3. period ended2025-12-31
    13F 76,132 shares
    Change vs previous 13F +11,354 shares

    12.09% of the 13F portfolio, value $36,033,276.

    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).

  4. period ended2025-09-30
    13F 64,778 shares
    Change vs previous 13F 0 shares

    12.47% of the 13F portfolio, value $30,342,663.

    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).

  5. period ended2025-06-30
    13F 64,778 shares
    Change vs previous 13F 0 shares

    12.16% of the 13F portfolio, value $27,503,443.

    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).

  6. period ended2025-03-31
    13F 64,778 shares
    Change vs previous 13F -2,044 shares

    11.22% of the 13F portfolio, value $23,390,688.

    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).

  7. period ended2024-12-31
    13F 66,822 shares
    Change vs previous 13F -2,143 shares

    10.02% of the 13F portfolio, value $26,834,379.

    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).

  8. period ended2024-09-30
    13F 68,965 shares
    Change vs previous 13F not available

    11.81% of the 13F portfolio, value $25,888,082.

    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).