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Disclosery

SEI INVESTMENTS CO: ATMU position timeline

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

SEI INVESTMENTS CO held 80,334 ATMU 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 80,334 shares
    Change vs previous 13F -83,816 shares

    <0.01% of the 13F portfolio, value $4,096,544.

    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 164,150 shares
    Change vs previous 13F +62,018 shares

    0.01% of the 13F portfolio, value $9,318,938.

    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 102,132 shares
    Change vs previous 13F +28,344 shares

    0.01% of the 13F portfolio, value $5,301,566.

    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 73,788 shares
    Change vs previous 13F +5,175 shares

    <0.01% of the 13F portfolio, value $3,327,234.

    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 68,613 shares
    Change vs previous 13F -132,649 shares

    <0.01% of the 13F portfolio, value $2,498,866.

    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 201,262 shares
    Change vs previous 13F -84,618 shares

    0.01% of the 13F portfolio, value $7,392,125.

    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 285,880 shares
    Change vs previous 13F -36,040 shares

    0.01% of the 13F portfolio, value $11,200,496.

    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 321,920 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $12,081,816.

    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).