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SEI INVESTMENTS CO: MTRN position timeline

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

SEI INVESTMENTS CO held 63,136 MTRN 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 63,136 shares
    Change vs previous 13F -16,472 shares

    0.02% of the 13F portfolio, value $18,775,766.

    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 79,608 shares
    Change vs previous 13F +9,003 shares

    0.01% of the 13F portfolio, value $11,515,660.

    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 70,605 shares
    Change vs previous 13F +10,237 shares

    0.01% of the 13F portfolio, value $8,777,280.

    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 60,368 shares
    Change vs previous 13F +5,490 shares

    0.01% of the 13F portfolio, value $7,293,405.

    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 54,878 shares
    Change vs previous 13F +3,281 shares

    0.01% of the 13F portfolio, value $4,354,665.

    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 51,597 shares
    Change vs previous 13F +7,230 shares

    0.01% of the 13F portfolio, value $4,210,029.

    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 44,367 shares
    Change vs previous 13F +3,347 shares

    0.01% of the 13F portfolio, value $4,387,281.

    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 41,020 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $4,588,101.

    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).