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SEI INVESTMENTS CO: MRCY position timeline

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

SEI INVESTMENTS CO held 261,712 MRCY 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 261,712 shares
    Change vs previous 13F -109,280 shares

    0.03% of the 13F portfolio, value $32,015,089.

    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 370,992 shares
    Change vs previous 13F -7,365 shares

    0.02% of the 13F portfolio, value $27,049,033.

    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 378,357 shares
    Change vs previous 13F +66,796 shares

    0.03% of the 13F portfolio, value $27,623,990.

    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 311,561 shares
    Change vs previous 13F +120,962 shares

    0.03% of the 13F portfolio, value $24,114,860.

    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 190,599 shares
    Change vs previous 13F +19,843 shares

    0.01% of the 13F portfolio, value $10,265,627.

    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 170,756 shares
    Change vs previous 13F +26,570 shares

    0.01% of the 13F portfolio, value $7,357,705.

    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 144,186 shares
    Change vs previous 13F +13,103 shares

    0.01% of the 13F portfolio, value $6,055,860.

    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 131,083 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $4,850,167.

    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).