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SEI INVESTMENTS CO: BLK position timeline

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

SEI INVESTMENTS CO held 43,104 BLK 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 43,104 shares
    Change vs previous 13F -1,979 shares

    0.04% of the 13F portfolio, value $41,444,145.

    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 45,083 shares
    Change vs previous 13F -339 shares

    0.04% of the 13F portfolio, value $43,355,139.

    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 45,422 shares
    Change vs previous 13F +1,734 shares

    0.05% of the 13F portfolio, value $48,615,816.

    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 43,688 shares
    Change vs previous 13F +723 shares

    0.05% of the 13F portfolio, value $50,938,815.

    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 42,965 shares
    Change vs previous 13F -6,779 shares

    0.05% of the 13F portfolio, value $45,083,736.

    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 49,744 shares
    Change vs previous 13F +2,633 shares

    0.06% of the 13F portfolio, value $47,084,935.

    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 47,111 shares
    Change vs previous 13F not available

    0.06% of the 13F portfolio, value $48,300,693.

    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).