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GAMCO Investors (Gabelli): CIO position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of GAMCO Investors (Gabelli) on CIO, newest first. How the timeline and the estimate are built.

GAMCO Investors (Gabelli) held 0 CIO shares at 2026-03-31 per its 13F-HR filed 2026-05-14.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -1,784,715 shares

    13F-HR 0001140361-26-021334 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 0 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 0 shares
    • GABELLI FUNDS LLC: 0 shares

    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 1,784,715 shares
    Change vs previous 13F +1,120,386 shares

    0.05% of the 13F portfolio, value $12,475,158.

    13F-HR 0001140361-26-003893 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 50,000 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 693,050 shares
    • GABELLI FUNDS LLC: 1,041,665 shares

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

  3. period ended2025-09-30
    13F 664,329 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $4,623,730.

    13F-HR 0001140361-25-041671 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 28,000 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 244,050 shares
    • GABELLI FUNDS LLC: 392,279 shares

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