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SEI INVESTMENTS CO: AMTM position timeline

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

SEI INVESTMENTS CO held 190,069 AMTM 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 190,069 shares
    Change vs previous 13F -104,599 shares

    <0.01% of the 13F portfolio, value $3,928,797.

    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 294,668 shares
    Change vs previous 13F +77,624 shares

    0.01% of the 13F portfolio, value $7,685,049.

    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 217,044 shares
    Change vs previous 13F +16,521 shares

    0.01% of the 13F portfolio, value $6,294,379.

    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 200,523 shares
    Change vs previous 13F -18,603 shares

    0.01% of the 13F portfolio, value $4,802,505.

    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 219,126 shares
    Change vs previous 13F +16,976 shares

    0.01% of the 13F portfolio, value $5,173,553.

    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 202,150 shares
    Change vs previous 13F -85,163 shares

    <0.01% of the 13F portfolio, value $3,679,146.

    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 287,313 shares
    Change vs previous 13F +43,597 shares

    0.01% of the 13F portfolio, value $6,042,231.

    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 243,716 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $7,859,844.

    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).