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WEITZ INVESTMENT MANAGEMENT, INC.: AON position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of WEITZ INVESTMENT MANAGEMENT, INC. on AON, newest first. How the timeline and the estimate are built.

WEITZ INVESTMENT MANAGEMENT, INC. held 213,860 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 213,860 shares
    Change vs previous 13F 0 shares

    4.91% of the 13F portfolio, value $70,935,223.

    13F-HR 0001821268-26-000133 filed by WEITZ INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2026-03-31
    13F 213,860 shares
    Change vs previous 13F -4,875 shares

    4.82% of the 13F portfolio, value $69,029,731.

    13F-HR 0001821268-26-000087 filed by WEITZ INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-12-31
    13F 218,735 shares
    Change vs previous 13F +5,285 shares

    4.58% of the 13F portfolio, value $77,187,207.

    13F-HR 0001821268-26-000035 filed by WEITZ INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 213,450 shares
    Change vs previous 13F 0 shares

    4.13% of the 13F portfolio, value $76,112,001.

    13F-HR 0001821268-25-000230 filed by WEITZ INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 213,450 shares
    Change vs previous 13F 0 shares

    4.09% of the 13F portfolio, value $76,150,422.

    13F-HR 0001821268-25-000188 filed by WEITZ INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 213,450 shares
    Change vs previous 13F -47,500 shares

    4.53% of the 13F portfolio, value $85,185,761.

    13F-HR 0001821268-25-000102 filed by WEITZ INVESTMENT MANAGEMENT, INC.
    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 260,950 shares
    Change vs previous 13F 0 shares

    4.83% of the 13F portfolio, value $93,722,802.

    13F-HR 0001821268-25-000065 filed by WEITZ INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 260,950 shares
    Change vs previous 13F not available

    4.45% of the 13F portfolio, value $90,286,091.

    13F-HR 0001821268-24-000289 filed by WEITZ INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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