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Disclosery

SEI INVESTMENTS CO: AON position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of SEI INVESTMENTS CO on AON, newest first. How the timeline and the estimate are built.

SEI INVESTMENTS CO held 385,948 AON shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 385,948 shares
    Change vs previous 13F -65,977 shares

    0.11% of the 13F portfolio, value $128,013,818.

    13F-HR 0002048251-26-006553 filed by SEI INVESTMENTS CO
    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 451,925 shares
    Change vs previous 13F -9,875 shares

    0.13% of the 13F portfolio, value $145,872,023.

    13F-HR 0002048251-26-003739 filed by SEI INVESTMENTS CO
    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 461,800 shares
    Change vs previous 13F +90,642 shares

    0.16% of the 13F portfolio, value $162,959,252.

    13F-HR 0000350894-26-000005 filed by SEI INVESTMENTS CO
    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 371,158 shares
    Change vs previous 13F -33,811 shares

    0.14% of the 13F portfolio, value $132,349,599.

    13F-HR 0002048251-25-002343 filed by SEI INVESTMENTS CO
    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 404,969 shares
    Change vs previous 13F -14,132 shares

    0.17% of the 13F portfolio, value $144,477,293.

    13F-HR 0001041062-25-000162 filed by SEI INVESTMENTS CO
    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/A 419,101 shares
    Change vs previous 13F +118,419 shares

    0.22% of the 13F portfolio, value $167,261,658.

    13F-HR/A 0001041062-25-000106 filed by SEI INVESTMENTS CO
    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 300,682 shares
    Change vs previous 13F +61,869 shares

    0.14% of the 13F portfolio, value $107,994,664.

    13F-HR 0001041062-25-000019 filed by SEI INVESTMENTS CO
    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 238,813 shares
    Change vs previous 13F not available

    0.11% of the 13F portfolio, value $82,627,702.

    13F-HR 0001041062-24-000165 filed by SEI INVESTMENTS CO
    Filed (acceptance time not in the bulk data set), ingested

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