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Disclosery

GAMCO Investors (Gabelli): AON position timeline

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

GAMCO Investors (Gabelli) held 6,880 AON 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 6,880 shares
    Change vs previous 13F -10,939 shares

    0.01% of the 13F portfolio, value $2,282,027.

    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: 0 shares
    • GABELLI FUNDS LLC: 6,880 shares

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

  2. period ended2026-03-31
    13F 17,819 shares
    Change vs previous 13F +5,403 shares

    0.02% of the 13F portfolio, value $5,751,616.

    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: 5,939 shares
    • GABELLI FUNDS LLC: 11,880 shares

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

  3. period ended2025-12-31
    13F 12,416 shares
    Change vs previous 13F -4,022 shares

    0.02% of the 13F portfolio, value $4,381,358.

    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: 5,856 shares
    • GABELLI FUNDS LLC: 6,560 shares

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

  4. period ended2025-09-30
    13F 16,438 shares
    Change vs previous 13F +118 shares

    0.02% of the 13F portfolio, value $5,861,462.

    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: 5,828 shares
    • GABELLI FUNDS LLC: 10,610 shares

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

  5. period ended2025-06-30
    13F 16,320 shares
    Change vs previous 13F +5,665 shares

    0.02% of the 13F portfolio, value $5,822,323.

    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: 5,600 shares
    • GABELLI FUNDS LLC: 10,720 shares

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

  6. period ended2025-03-31
    13F 10,655 shares
    Change vs previous 13F +2,215 shares

    0.03% of the 13F portfolio, value $4,252,304.

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

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

  7. period ended2024-12-31
    13F 8,440 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $3,031,310.

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

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