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Disclosery

SEI INVESTMENTS CO: AMX position timeline

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

SEI INVESTMENTS CO held 578,707 AMX 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 578,707 shares
    Change vs previous 13F +351,898 shares

    0.01% of the 13F portfolio, value $15,040,596.

    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 226,809 shares
    Change vs previous 13F -6,651 shares

    0.01% of the 13F portfolio, value $5,779,103.

    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 233,460 shares
    Change vs previous 13F -14,631 shares

    <0.01% of the 13F portfolio, value $4,825,618.

    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 248,091 shares
    Change vs previous 13F -181,000 shares

    0.01% of the 13F portfolio, value $5,209,913.

    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 429,091 shares
    Change vs previous 13F -133,885 shares

    0.01% of the 13F portfolio, value $7,697,891.

    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 562,976 shares
    Change vs previous 13F -53,026 shares

    0.01% of the 13F portfolio, value $8,005,521.

    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 616,002 shares
    Change vs previous 13F -3,870 shares

    0.01% of the 13F portfolio, value $8,814,992.

    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 619,872 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $10,141,103.

    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).