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Disclosery

Corundum Group, Inc.: MSFT position timeline

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

Corundum Group, Inc. held 12,510 MSFT 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 12,510 shares
    Change vs previous 13F +51 shares

    1.38% of the 13F portfolio, value $4,666,480.

    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 12,459 shares
    Change vs previous 13F -2,797 shares

    1.54% of the 13F portfolio, value $4,611,948.

    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 15,256 shares
    Change vs previous 13F +326 shares

    2.48% of the 13F portfolio, value $7,378,107.

    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 14,930 shares
    Change vs previous 13F -180 shares

    3.18% of the 13F portfolio, value $7,732,993.

    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 15,110 shares
    Change vs previous 13F -820 shares

    3.32% of the 13F portfolio, value $7,515,865.

    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 15,930 shares
    Change vs previous 13F -1,797 shares

    2.87% of the 13F portfolio, value $5,979,963.

    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 17,727 shares
    Change vs previous 13F +452 shares

    2.79% of the 13F portfolio, value $7,471,930.

    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 17,275 shares
    Change vs previous 13F not available

    3.39% of the 13F portfolio, value $7,433,432.

    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).