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SEI INVESTMENTS CO: MEC position timeline

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

SEI INVESTMENTS CO held 118,607 MEC 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 118,607 shares
    Change vs previous 13F -4,271 shares

    <0.01% of the 13F portfolio, value $4,443,020.

    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 122,878 shares
    Change vs previous 13F +39,309 shares

    <0.01% of the 13F portfolio, value $2,205,660.

    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 83,569 shares
    Change vs previous 13F +28,255 shares

    <0.01% of the 13F portfolio, value $1,564,408.

    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 55,314 shares
    Change vs previous 13F +3,824 shares

    <0.01% of the 13F portfolio, value $761,125.

    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 51,490 shares
    Change vs previous 13F +6,103 shares

    <0.01% of the 13F portfolio, value $821,778.

    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 45,387 shares
    Change vs previous 13F -3,183 shares

    <0.01% of the 13F portfolio, value $609,548.

    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 48,570 shares
    Change vs previous 13F +2,353 shares

    <0.01% of the 13F portfolio, value $763,519.

    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 46,217 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $974,257.

    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).