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SEI INVESTMENTS CO: WDC position timeline

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

SEI INVESTMENTS CO held 410,425 WDC 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 410,425 shares
    Change vs previous 13F -84,749 shares

    0.23% of the 13F portfolio, value $262,145,302.

    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 495,174 shares
    Change vs previous 13F +23,977 shares

    0.12% of the 13F portfolio, value $133,934,948.

    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 471,197 shares
    Change vs previous 13F +11,323 shares

    0.08% of the 13F portfolio, value $81,170,986.

    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 459,874 shares
    Change vs previous 13F +358,136 shares

    0.06% of the 13F portfolio, value $55,201,167.

    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 101,738 shares
    Change vs previous 13F +9,349 shares

    0.01% of the 13F portfolio, value $6,510,988.

    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 92,389 shares
    Change vs previous 13F -34,155 shares

    <0.01% of the 13F portfolio, value $3,732,844.

    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 126,544 shares
    Change vs previous 13F -29,213 shares

    0.01% of the 13F portfolio, value $7,549,085.

    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 155,757 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $10,635,086.

    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).