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GAMCO Investors (Gabelli): MCO position timeline

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

GAMCO Investors (Gabelli) held 66,543 MCO 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 66,543 shares
    Change vs previous 13F -4,631 shares

    0.11% of the 13F portfolio, value $30,138,655.

    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: 12,245 shares
    • GABELLI FUNDS LLC: 54,298 shares

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

  2. period ended2026-03-31
    13F 71,174 shares
    Change vs previous 13F +4,407 shares

    0.12% of the 13F portfolio, value $31,049,658.

    13F-HR 0001140361-26-021337 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 16,536 shares
    • GABELLI FUNDS LLC: 54,638 shares

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

  3. period ended2025-12-31
    13F 66,767 shares
    Change vs previous 13F -190 shares

    0.14% of the 13F portfolio, value $34,107,922.

    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: 15,119 shares
    • GABELLI FUNDS LLC: 51,648 shares

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

  4. period ended2025-09-30
    13F 66,957 shares
    Change vs previous 13F -256 shares

    0.13% of the 13F portfolio, value $31,903,672.

    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: 15,220 shares
    • GABELLI FUNDS LLC: 51,737 shares

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

  5. period ended2025-06-30
    13F 67,213 shares
    Change vs previous 13F +3,171 shares

    0.14% of the 13F portfolio, value $33,713,368.

    13F-HR 0001140361-25-030816 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 15,326 shares
    • GABELLI FUNDS LLC: 51,887 shares

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

  6. period ended2025-03-31
    13F 64,042 shares
    Change vs previous 13F +2,160 shares

    0.13% of the 13F portfolio, value $29,823,719.

    13F-HR 0001140361-25-018974 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 12,143 shares
    • GABELLI FUNDS LLC: 51,899 shares

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

  7. period ended2024-12-31
    13F 61,882 shares
    Change vs previous 13F +5,326 shares

    0.13% of the 13F portfolio, value $29,293,083.

    13F-HR 0001140361-25-004328 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 10,742 shares
    • GABELLI FUNDS LLC: 51,140 shares

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

  8. period ended2024-09-30
    13F 56,556 shares
    Change vs previous 13F not available

    0.11% of the 13F portfolio, value $26,840,912.

    13F-HR 0001140361-24-046503 filed by GABELLI FUNDS LLC
    Filed (acceptance time not in the bulk data set), ingested

    • GAMCO INVESTORS, INC. ET AL: 11,117 shares
    • GABELLI FUNDS LLC: 45,439 shares

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