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Disclosery

Atreides Management, LP: CIEN position timeline

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

Atreides Management, LP held 688,521 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 688,521 shares
    Change vs previous 13F +11,714 shares

    3.03% of the 13F portfolio, value $337,760,862.

    13F-HR 0001777813-26-000009 filed by Atreides Management, 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 676,807 shares
    Change vs previous 13F -751,423 shares

    6.4% of the 13F portfolio, value $262,756,782.

    13F-HR 0001777813-26-000006 filed by Atreides Management, 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 1,428,230 shares
    Change vs previous 13F +27,466 shares

    7.09% of the 13F portfolio, value $334,020,150.

    13F-HR 0001777813-26-000003 filed by Atreides Management, 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 1,400,764 shares
    Change vs previous 13F +137,946 shares

    5.3% of the 13F portfolio, value $204,049,292.

    13F-HR 0001777813-25-000008 filed by Atreides Management, 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 1,262,818 shares
    Change vs previous 13F +1,262,818 shares

    2.85% of the 13F portfolio, value $102,704,988.

    13F-HR 0001768757-25-000010 filed by Atreides Management, 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 0 shares
    Change vs previous 13F -74,952 shares

    13F-HR 0001777813-25-000005 filed by Atreides Management, LP
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  7. period ended2024-12-31
    13F 74,952 shares
    Change vs previous 13F -2,144,259 shares

    0.2% of the 13F portfolio, value $6,356,679.

    13F-HR 0001768757-25-000003 filed by Atreides Management, 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 2,219,211 shares
    Change vs previous 13F not available

    4.62% of the 13F portfolio, value $136,681,205.

    13F-HR 0001777813-24-000010 filed by Atreides Management, LP
    Filed (acceptance time not in the bulk data set), ingested

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