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SEI INVESTMENTS CO: MGNI position timeline

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

SEI INVESTMENTS CO held 165,553 MGNI 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 165,553 shares
    Change vs previous 13F -185,309 shares

    <0.01% of the 13F portfolio, value $3,142,187.

    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 350,862 shares
    Change vs previous 13F +139,325 shares

    <0.01% of the 13F portfolio, value $4,168,239.

    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 211,537 shares
    Change vs previous 13F +136,554 shares

    <0.01% of the 13F portfolio, value $3,433,249.

    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 74,983 shares
    Change vs previous 13F -7,133 shares

    <0.01% of the 13F portfolio, value $1,633,128.

    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 82,116 shares
    Change vs previous 13F +42,353 shares

    <0.01% of the 13F portfolio, value $1,980,635.

    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 39,763 shares
    Change vs previous 13F -6,406 shares

    <0.01% of the 13F portfolio, value $453,697.

    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 46,169 shares
    Change vs previous 13F +21,464 shares

    <0.01% of the 13F portfolio, value $735,015.

    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 24,705 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $342,161.

    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).