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SEI INVESTMENTS CO: MAS position timeline

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

SEI INVESTMENTS CO held 318,955 MAS 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 318,955 shares
    Change vs previous 13F -28,371 shares

    0.02% of the 13F portfolio, value $25,953,573.

    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 347,326 shares
    Change vs previous 13F +53,864 shares

    0.02% of the 13F portfolio, value $20,967,621.

    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 293,462 shares
    Change vs previous 13F +17,581 shares

    0.02% of the 13F portfolio, value $18,622,709.

    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 275,881 shares
    Change vs previous 13F +14,084 shares

    0.02% of the 13F portfolio, value $19,419,380.

    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 261,797 shares
    Change vs previous 13F +3,544 shares

    0.02% of the 13F portfolio, value $16,849,213.

    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 258,253 shares
    Change vs previous 13F +52,429 shares

    0.02% of the 13F portfolio, value $17,960,023.

    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 205,824 shares
    Change vs previous 13F +89 shares

    0.02% of the 13F portfolio, value $14,936,709.

    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 205,735 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $17,269,431.

    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).