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Disclosery

SEI INVESTMENTS CO: ATI position timeline

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

SEI INVESTMENTS CO held 95,963 ATI 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 95,963 shares
    Change vs previous 13F +5,918 shares

    0.02% of the 13F portfolio, value $18,914,272.

    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 90,045 shares
    Change vs previous 13F -29,540 shares

    0.01% of the 13F portfolio, value $13,097,909.

    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 119,585 shares
    Change vs previous 13F +2,088 shares

    0.01% of the 13F portfolio, value $13,723,585.

    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 117,497 shares
    Change vs previous 13F -5,669 shares

    0.01% of the 13F portfolio, value $9,557,155.

    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 123,166 shares
    Change vs previous 13F -24,857 shares

    0.01% of the 13F portfolio, value $10,634,166.

    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 148,023 shares
    Change vs previous 13F -22,943 shares

    0.01% of the 13F portfolio, value $7,701,614.

    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 170,966 shares
    Change vs previous 13F -76,667 shares

    0.01% of the 13F portfolio, value $9,409,974.

    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 247,633 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $16,569,118.

    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).