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WITTENBERG INVESTMENT MANAGEMENT, INC.: RDI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of WITTENBERG INVESTMENT MANAGEMENT, INC. on RDI, newest first. How the timeline and the estimate are built.

WITTENBERG INVESTMENT MANAGEMENT, INC. held 971,828 RDI shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 971,828 shares
    Change vs previous 13F -14,317 shares

    0.43% of the 13F portfolio, value $1,243,940.

    13F-HR 0001062993-26-004208 filed by WITTENBERG INVESTMENT MANAGEMENT, 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 986,145 shares
    Change vs previous 13F -6,379 shares

    0.41% of the 13F portfolio, value $1,114,344.

    13F-HR 0001062993-26-002625 filed by WITTENBERG INVESTMENT MANAGEMENT, 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 992,524 shares
    Change vs previous 13F -115,478 shares

    0.4% of the 13F portfolio, value $1,042,150.

    13F-HR 0001062993-26-000921 filed by WITTENBERG INVESTMENT MANAGEMENT, 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 1,108,002 shares
    Change vs previous 13F -27,444 shares

    0.65% of the 13F portfolio, value $1,628,763.

    13F-HR 0001062993-25-016732 filed by WITTENBERG INVESTMENT MANAGEMENT, 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 1,135,446 shares
    Change vs previous 13F -90,579 shares

    0.66% of the 13F portfolio, value $1,521,498.

    13F-HR 0001062993-25-014036 filed by WITTENBERG INVESTMENT MANAGEMENT, 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 1,226,025 shares
    Change vs previous 13F -30,742 shares

    0.77% of the 13F portfolio, value $1,704,175.

    13F-HR 0001062993-25-009041 filed by WITTENBERG INVESTMENT MANAGEMENT, 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 1,256,767 shares
    Change vs previous 13F -302,024 shares

    0.65% of the 13F portfolio, value $1,658,932.

    13F-HR 0001062993-25-002229 filed by WITTENBERG INVESTMENT MANAGEMENT, 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 1,558,791 shares
    Change vs previous 13F not available

    0.82% of the 13F portfolio, value $2,540,829.

    13F-HR 0001062993-24-018951 filed by WITTENBERG INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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