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GAMCO Investors (Gabelli): TREX position timeline

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

GAMCO Investors (Gabelli) held 319,277 TREX 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 319,277 shares
    Change vs previous 13F +86,507 shares

    0.06% of the 13F portfolio, value $15,976,622.

    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: 191,413 shares
    • GABELLI FUNDS LLC: 127,864 shares

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

  2. period ended2026-03-31
    13F 232,770 shares
    Change vs previous 13F +38,280 shares

    0.03% of the 13F portfolio, value $8,477,483.

    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: 145,965 shares
    • GABELLI FUNDS LLC: 86,805 shares

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

  3. period ended2025-12-31
    13F 194,490 shares
    Change vs previous 13F not available

    0.03% of the 13F portfolio, value $6,822,709.

    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: 144,490 shares
    • GABELLI FUNDS LLC: 50,000 shares

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