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Disclosery

SEI INVESTMENTS CO: AMT position timeline

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

SEI INVESTMENTS CO held 919,264 AMT 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 919,264 shares
    Change vs previous 13F +51,846 shares

    0.13% of the 13F portfolio, value $150,361,924.

    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 867,418 shares
    Change vs previous 13F +63,924 shares

    0.14% of the 13F portfolio, value $149,703,516.

    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 803,494 shares
    Change vs previous 13F +2,159 shares

    0.14% of the 13F portfolio, value $141,070,395.

    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 801,335 shares
    Change vs previous 13F -114,831 shares

    0.17% of the 13F portfolio, value $154,108,845.

    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 916,166 shares
    Change vs previous 13F -208,873 shares

    0.23% of the 13F portfolio, value $202,488,418.

    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 1,125,039 shares
    Change vs previous 13F +130,031 shares

    0.32% of the 13F portfolio, value $244,812,427.

    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 995,008 shares
    Change vs previous 13F +62,359 shares

    0.23% of the 13F portfolio, value $182,493,954.

    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 932,649 shares
    Change vs previous 13F not available

    0.28% of the 13F portfolio, value $216,900,219.

    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).