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Disclosery

DUDLEY & SHANLEY, INC.: AON position timeline

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

DUDLEY & SHANLEY, INC. held 85,202 AON shares at 2026-09-30 per its 13F-HR filed 2026-10-06.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 85,202 shares
    Change vs previous 13F -3,605 shares

    3.75% of the 13F portfolio, value $23,581,358.

    13F-HR 0000883511-26-000006 filed by DUDLEY & SHANLEY, INC.
    Accepted , ingested

  2. period ended2026-06-30
    13F 88,807 shares
    Change vs previous 13F +25 shares

    4.45% of the 13F portfolio, value $29,456,394.

    13F-HR 0000883511-26-000003 filed by DUDLEY & SHANLEY, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 88,782 shares
    Change vs previous 13F 0 shares

    4.69% of the 13F portfolio, value $28,657,054.

    13F-HR 0000883511-26-000002 filed by DUDLEY & SHANLEY, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 88,782 shares
    Change vs previous 13F +50 shares

    5.04% of the 13F portfolio, value $31,329,392.

    13F-HR 0000883511-26-000001 filed by DUDLEY & SHANLEY, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 88,732 shares
    Change vs previous 13F +100 shares

    5.09% of the 13F portfolio, value $31,640,057.

    13F-HR 0000883511-25-000008 filed by DUDLEY & SHANLEY, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 88,632 shares
    Change vs previous 13F -5 shares

    4.97% of the 13F portfolio, value $31,620,352.

    13F-HR 0000883511-25-000006 filed by DUDLEY & SHANLEY, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F 88,637 shares
    Change vs previous 13F -5,190 shares

    5.57% of the 13F portfolio, value $35,374,140.

    13F-HR 0000883511-25-000005 filed by DUDLEY & SHANLEY, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 93,827 shares
    Change vs previous 13F not available

    5.2% of the 13F portfolio, value $33,698,905.

    13F-HR 0000883511-25-000001 filed by DUDLEY & SHANLEY, INC.
    Filed (acceptance time not in the bulk data set), ingested

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