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Disclosery

Magnetar Financial LLC: CIEN position timeline

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

Magnetar Financial LLC held 769 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 769 shares
    Change vs previous 13F +769 shares

    <0.01% of the 13F portfolio, value $377,241.

    13F-HR 0001104659-26-096490 filed by Magnetar Financial LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2025-06-30
    13F 0 shares
    Change vs previous 13F -59,933 shares

    13F-HR 0001104659-25-076542 filed by Magnetar Financial LLC
    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.

  3. period ended2025-03-31
    13F 59,933 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $3,621,751.

    13F-HR 0001104659-25-048974 filed by Magnetar Financial LLC
    Filed (acceptance time not in the bulk data set), ingested

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