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DIMENSIONAL FUND ADVISORS LP: CIEN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of DIMENSIONAL FUND ADVISORS LP on CIEN, newest first. How the timeline and the estimate are built.

DIMENSIONAL FUND ADVISORS LP held 1,153,229 CIEN shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,153,229 shares
    Change vs previous 13F +7,209 shares

    0.1% of the 13F portfolio, value $565,627,151.

    13F-HR 0000354204-26-000866 filed by DIMENSIONAL FUND ADVISORS LP
    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 1,146,020 shares
    Change vs previous 13F -250,854 shares

    0.09% of the 13F portfolio, value $444,746,223.

    13F-HR 0000354204-26-000581 filed by DIMENSIONAL FUND ADVISORS LP
    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 1,396,874 shares
    Change vs previous 13F -598,825 shares

    0.07% of the 13F portfolio, value $326,720,052.

    13F-HR 0000354204-26-000347 filed by DIMENSIONAL FUND ADVISORS LP
    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 1,995,699 shares
    Change vs previous 13F -273,525 shares

    0.06% of the 13F portfolio, value $290,690,722.

    13F-HR 0000354204-25-001337 filed by DIMENSIONAL FUND ADVISORS LP
    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 2,269,224 shares
    Change vs previous 13F -108,254 shares

    0.04% of the 13F portfolio, value $184,571,921.

    13F-HR 0000354204-25-001097 filed by DIMENSIONAL FUND ADVISORS LP
    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 2,377,478 shares
    Change vs previous 13F -225,053 shares

    0.04% of the 13F portfolio, value $143,670,662.

    13F-HR 0000354204-25-000866 filed by DIMENSIONAL FUND ADVISORS LP
    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 2,602,531 shares
    Change vs previous 13F -43,513 shares

    0.05% of the 13F portfolio, value $220,726,316.

    13F-HR 0000354204-25-000528 filed by DIMENSIONAL FUND ADVISORS LP
    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 2,646,044 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $162,971,964.

    13F-HR 0000354204-24-004773 filed by DIMENSIONAL FUND ADVISORS LP
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).