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GAMCO Investors (Gabelli): MAT position timeline

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

GAMCO Investors (Gabelli) held 76,500 MAT 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 76,500 shares
    Change vs previous 13F -10,500 shares

    <0.01% of the 13F portfolio, value $1,061,820.

    13F-HR 0001140361-26-032509 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 36,500 shares
    • GABELLI FUNDS LLC: 40,000 shares

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

  2. period ended2026-03-31
    13F 87,000 shares
    Change vs previous 13F +400 shares

    0.01% of the 13F portfolio, value $1,264,110.

    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: 47,000 shares
    • GABELLI FUNDS LLC: 40,000 shares

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

  3. period ended2025-12-31
    13F 86,600 shares
    Change vs previous 13F 0 shares

    0.01% of the 13F portfolio, value $1,718,144.

    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: 46,600 shares
    • GABELLI FUNDS LLC: 40,000 shares

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

  4. period ended2025-09-30
    13F 86,600 shares
    Change vs previous 13F 0 shares

    0.01% of the 13F portfolio, value $1,457,478.

    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: 46,600 shares
    • GABELLI FUNDS LLC: 40,000 shares

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

  5. period ended2025-06-30
    13F 86,600 shares
    Change vs previous 13F -6,200 shares

    0.01% of the 13F portfolio, value $1,707,752.

    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: 46,600 shares
    • GABELLI FUNDS LLC: 40,000 shares

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

  6. period ended2025-03-31
    13F 92,800 shares
    Change vs previous 13F +6,100 shares

    0.01% of the 13F portfolio, value $1,803,104.

    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: 52,800 shares
    • GABELLI FUNDS LLC: 40,000 shares

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

  7. period ended2024-12-31
    13F 86,700 shares
    Change vs previous 13F 0 shares

    0.01% of the 13F portfolio, value $1,537,191.

    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: 46,700 shares
    • GABELLI FUNDS LLC: 40,000 shares

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

  8. period ended2024-09-30
    13F 86,700 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $1,651,635.

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

    • GAMCO INVESTORS, INC. ET AL: 46,700 shares
    • GABELLI FUNDS LLC: 40,000 shares

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