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SEI INVESTMENTS CO: CIEN position timeline

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

SEI INVESTMENTS CO held 144,010 CIEN 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 144,010 shares
    Change vs previous 13F -763 shares

    0.06% of the 13F portfolio, value $70,644,287.

    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 144,773 shares
    Change vs previous 13F -104,622 shares

    0.05% of the 13F portfolio, value $56,204,897.

    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 249,395 shares
    Change vs previous 13F -60,582 shares

    0.06% of the 13F portfolio, value $58,325,943.

    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 309,977 shares
    Change vs previous 13F +99,171 shares

    0.05% of the 13F portfolio, value $45,154,539.

    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 210,806 shares
    Change vs previous 13F -38,615 shares

    0.02% of the 13F portfolio, value $17,145,012.

    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 249,421 shares
    Change vs previous 13F +92,407 shares

    0.02% of the 13F portfolio, value $15,072,397.

    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 157,014 shares
    Change vs previous 13F -24,006 shares

    0.02% of the 13F portfolio, value $13,316,293.

    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 181,020 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $11,148,970.

    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).