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GAMCO Investors (Gabelli): GT position timeline

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

GAMCO Investors (Gabelli) held 451,655 GT 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 451,655 shares
    Change vs previous 13F 0 shares

    0.03% of the 13F portfolio, value $2,980,923.

    13F-HR 0001140361-26-032508 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 381,655 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 70,000 shares

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

  2. period ended2026-03-31
    13F 451,655 shares
    Change vs previous 13F +23,580 shares

    0.03% of the 13F portfolio, value $2,994,473.

    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: 381,655 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 70,000 shares

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

  3. period ended2025-12-31
    13F 428,075 shares
    Change vs previous 13F +59,712 shares

    0.03% of the 13F portfolio, value $3,749,937.

    13F-HR 0001140361-26-003895 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 364,275 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 63,800 shares

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

  4. period ended2025-09-30
    13F 368,363 shares
    Change vs previous 13F +123,163 shares

    0.03% of the 13F portfolio, value $2,755,355.

    13F-HR 0001140361-25-041670 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 329,563 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 38,800 shares

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

  5. period ended2025-06-30
    13F 245,200 shares
    Change vs previous 13F -6,500 shares

    0.02% of the 13F portfolio, value $2,542,724.

    13F-HR 0001140361-25-030814 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 206,400 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 38,800 shares

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

  6. period ended2025-03-31
    13F 251,700 shares
    Change vs previous 13F -3,000 shares

    0.02% of the 13F portfolio, value $2,325,708.

    13F-HR 0001140361-25-018975 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 212,900 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 38,800 shares

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

  7. period ended2024-12-31
    13F 254,700 shares
    Change vs previous 13F +33,800 shares

    0.02% of the 13F portfolio, value $2,292,300.

    13F-HR 0001140361-25-004330 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 215,900 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 38,800 shares

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

  8. period ended2024-09-30
    13F 220,900 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $1,954,965.

    13F-HR 0001140361-24-046738 filed by GAMCO INVESTORS, INC. ET AL
    Filed (acceptance time not in the bulk data set), ingested

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