Skip to content
Disclosery

Atika Capital Management LLC: CIEN position timeline

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

Atika Capital Management LLC held 48,768 CIEN shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 48,768 shares
    Change vs previous 13F +5,117 shares

    2.37% of the 13F portfolio, value $23,923,629.

    13F-HR 0001214659-26-010035 filed by Atika Capital Management LLC
    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 43,651 shares
    Change vs previous 13F -16,349 shares

    2.67% of the 13F portfolio, value $16,946,628.

    13F-HR 0001214659-26-006119 filed by Atika Capital Management LLC
    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 60,000 shares
    Change vs previous 13F -20,000 shares

    1.95% of the 13F portfolio, value $14,032,201.

    13F-HR 0001214659-26-001658 filed by Atika Capital Management LLC
    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 80,000 shares
    Change vs previous 13F not available

    0.99% of the 13F portfolio, value $11,653,599.

    13F-HR 0001214659-25-016379 filed by Atika Capital Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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