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SEI INVESTMENTS CO: SEIM position timeline

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

SEI INVESTMENTS CO held 12,840,416 SEIM 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 12,840,416 shares
    Change vs previous 13F -629,335 shares

    0.64% of the 13F portfolio, value $720,990,948.

    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 13,469,751 shares
    Change vs previous 13F +329,618 shares

    0.57% of the 13F portfolio, value $613,549,494.

    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 13,140,133 shares
    Change vs previous 13F -11,514 shares

    0.6% of the 13F portfolio, value $606,154,067.

    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 13,151,647 shares
    Change vs previous 13F +2,415,116 shares

    0.64% of the 13F portfolio, value $597,088,599.

    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 10,736,531 shares
    Change vs previous 13F +102,597 shares

    0.52% of the 13F portfolio, value $452,652,160.

    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 10,633,934 shares
    Change vs previous 13F -256,818 shares

    0.49% of the 13F portfolio, value $383,461,340.

    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 10,890,752 shares
    Change vs previous 13F -1,352,771 shares

    0.54% of the 13F portfolio, value $420,492,260.

    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 12,243,523 shares
    Change vs previous 13F not available

    0.57% of the 13F portfolio, value $442,237,150.

    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).