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Disclosery

Polar Capital Holdings Plc: CIEN position timeline

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

Polar Capital Holdings Plc held 0 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 0 shares
    Change vs previous 13F -798,395 shares

    13F-HR 0001172661-26-003663 filed by Polar Capital Holdings Plc
    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.

  2. period ended2026-03-31
    13F 798,395 shares
    Change vs previous 13F -491,032 shares

    1.35% of the 13F portfolio, value $309,960,891.

    13F-HR 0001172661-26-002147 filed by Polar Capital Holdings Plc
    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 1,289,427 shares
    Change vs previous 13F -173,784 shares

    1.38% of the 13F portfolio, value $301,558,292.

    13F-HR 0001172661-26-000823 filed by Polar Capital Holdings Plc
    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 1,463,211 shares
    Change vs previous 13F +178,688 shares

    1.03% of the 13F portfolio, value $213,145,946.

    13F-HR 0001172661-25-004921 filed by Polar Capital Holdings Plc
    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 1,284,523 shares
    Change vs previous 13F +49,546 shares

    0.55% of the 13F portfolio, value $104,470,256.

    13F-HR 0001172661-25-003304 filed by Polar Capital Holdings Plc
    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 1,234,977 shares
    Change vs previous 13F -934,429 shares

    0.45% of the 13F portfolio, value $74,629,660.

    13F-HR 0001172661-25-002011 filed by Polar Capital Holdings Plc
    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 2,169,406 shares
    Change vs previous 13F +1,154,260 shares

    1.03% of the 13F portfolio, value $183,987,323.

    13F-HR 0001172661-25-000891 filed by Polar Capital Holdings Plc
    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 1,015,146 shares
    Change vs previous 13F not available

    0.3% of the 13F portfolio, value $62,522,842.

    13F-HR 0001172661-24-004785 filed by Polar Capital Holdings Plc
    Filed (acceptance time not in the bulk data set), ingested

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