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Disclosery

GAMCO Investors (Gabelli): OMC position timeline

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

GAMCO Investors (Gabelli) held 214,195 OMC 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 214,195 shares
    Change vs previous 13F +2,300 shares

    0.06% of the 13F portfolio, value $15,599,822.

    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: 180,149 shares
    • GABELLI FUNDS LLC: 34,046 shares

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

  2. period ended2026-03-31
    13F 211,895 shares
    Change vs previous 13F -39,895 shares

    0.06% of the 13F portfolio, value $15,957,812.

    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: 179,539 shares
    • GABELLI FUNDS LLC: 32,356 shares

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

  3. period ended2025-12-31
    13F 251,790 shares
    Change vs previous 13F +233,946 shares

    0.08% of the 13F portfolio, value $20,332,043.

    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: 214,222 shares
    • GABELLI FUNDS LLC: 37,568 shares

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

  4. period ended2025-09-30
    13F 17,844 shares
    Change vs previous 13F -260 shares

    0.01% of the 13F portfolio, value $1,454,821.

    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: 3,096 shares
    • GABELLI FUNDS LLC: 14,748 shares

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

  5. period ended2025-06-30
    13F 18,104 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $1,302,402.

    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: 3,356 shares
    • GABELLI FUNDS LLC: 14,748 shares

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