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Disclosery

Corundum Group, Inc.: SCHW position timeline

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

Corundum Group, Inc. held 2,360 SCHW 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 2,360 shares
    Change vs previous 13F +185 shares

    0.06% of the 13F portfolio, value $217,757.

    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 2,175 shares
    Change vs previous 13F -315 shares

    0.07% of the 13F portfolio, value $204,406.

    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 2,490 shares
    Change vs previous 13F not available

    0.08% of the 13F portfolio, value $248,776.

    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).