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Disclosery

Boston Trust Walden Corp: AON position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Boston Trust Walden Corp on AON, newest first. How the timeline and the estimate are built.

Boston Trust Walden Corp held 2,089,773 AON shares at 2026-06-30 per its 13F-HR filed 2026-08-04.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,089,773 shares
    Change vs previous 13F +134,741 shares

    0.62% of the 13F portfolio, value $695,754,228.

    13F-HR 0001386060-26-000035 filed by Boston Partners
    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 1,955,032 shares
    Change vs previous 13F +320,025 shares

    0.66% of the 13F portfolio, value $631,082,064.

    13F-HR 0001386060-26-000017 filed by Boston Partners
    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 1,635,007 shares
    Change vs previous 13F -76,243 shares

    0.6% of the 13F portfolio, value $576,316,555.

    13F-HR 0001386060-26-000014 filed by Boston Partners
    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 1,711,250 shares
    Change vs previous 13F +230,098 shares

    0.63% of the 13F portfolio, value $610,986,080.

    13F-HR 0001386060-25-000020 filed by Boston Partners
    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/A 1,481,152 shares
    Change vs previous 13F -640,455 shares

    0.59% of the 13F portfolio, value $528,763,907.

    13F-HR/A 0001085146-25-004915 filed by Boston Partners
    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 2,121,607 shares
    Change vs previous 13F +85,609 shares

    1.02% of the 13F portfolio, value $844,533,298.

    13F-HR 0001085146-25-002987 filed by Boston Partners
    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 2,035,998 shares
    Change vs previous 13F +244,706 shares

    0.89% of the 13F portfolio, value $731,798,934.

    13F-HR 0001085146-25-000961 filed by Boston Partners
    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 1,791,292 shares
    Change vs previous 13F not available

    0.73% of the 13F portfolio, value $620,433,221.

    13F-HR 0001085146-24-005518 filed by Boston Partners
    Filed (acceptance time not in the bulk data set), ingested

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