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GAMCO Investors (Gabelli): MGM position timeline

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

GAMCO Investors (Gabelli) held 622,439 MGM 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 622,439 shares
    Change vs previous 13F +60,667 shares

    0.11% of the 13F portfolio, value $29,758,809.

    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: 333,114 shares
    • GABELLI & Co INVESTMENT ADVISERS, INC.: 32,075 shares
    • GABELLI FUNDS LLC: 257,250 shares

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

  2. period ended2026-03-31
    13F 561,772 shares
    Change vs previous 13F -119,440 shares

    0.08% of the 13F portfolio, value $20,791,182.

    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: 349,172 shares
    • GABELLI FUNDS LLC: 212,600 shares

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

  3. period ended2025-12-31
    13F 681,212 shares
    Change vs previous 13F -23,561 shares

    0.1% of the 13F portfolio, value $24,857,426.

    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: 458,012 shares
    • GABELLI FUNDS LLC: 223,200 shares

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

  4. period ended2025-09-30
    13F 704,773 shares
    Change vs previous 13F -39,322 shares

    0.1% of the 13F portfolio, value $24,427,432.

    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: 466,273 shares
    • GABELLI FUNDS LLC: 238,500 shares

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

  5. period ended2025-06-30
    13F 744,095 shares
    Change vs previous 13F -10,825 shares

    0.11% of the 13F portfolio, value $25,589,427.

    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: 475,295 shares
    • GABELLI FUNDS LLC: 268,800 shares

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

  6. period ended2025-03-31
    13F 754,920 shares
    Change vs previous 13F -13,985 shares

    0.1% of the 13F portfolio, value $22,375,829.

    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: 478,320 shares
    • GABELLI FUNDS LLC: 276,600 shares

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

  7. period ended2024-12-31
    13F 768,905 shares
    Change vs previous 13F -14,800 shares

    0.12% of the 13F portfolio, value $26,642,558.

    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: 491,905 shares
    • GABELLI FUNDS LLC: 277,000 shares

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

  8. period ended2024-09-30
    13F 783,705 shares
    Change vs previous 13F not available

    0.13% of the 13F portfolio, value $30,635,028.

    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: 503,705 shares
    • GABELLI FUNDS LLC: 280,000 shares

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