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Disclosery

Brevan Howard Capital Management LP: CIEN position timeline

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

Brevan Howard Capital Management LP held 15,174 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 15,174 shares
    Change vs previous 13F +2,237 shares

    0.1% of the 13F portfolio, value $7,443,757.

    13F-HR 0000905148-26-003711 filed by Brevan Howard Capital 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 12,937 shares
    Change vs previous 13F +4,697 shares

    0.05% of the 13F portfolio, value $5,022,531.

    13F-HR 0000905148-26-002360 filed by Brevan Howard Capital 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 8,240 shares
    Change vs previous 13F -129,487 shares

    0.04% of the 13F portfolio, value $1,927,089.

    13F-HR 0000905148-26-000855 filed by Brevan Howard Capital 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 137,727 shares
    Change vs previous 13F +130,649 shares

    0.29% of the 13F portfolio, value $20,062,692.

    13F-HR 0000905148-25-004026 filed by Brevan Howard Capital 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 7,078 shares
    Change vs previous 13F -15,041 shares

    0.01% of the 13F portfolio, value $575,654.

    13F-HR 0000905148-25-002941 filed by Brevan Howard Capital 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 22,119 shares
    Change vs previous 13F +22,119 shares

    0.04% of the 13F portfolio, value $1,336,651.

    13F-HR 0000905148-25-001719 filed by Brevan Howard Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-09-30
    13F 0 shares
    Change vs previous 13F not available

    13F-HR 0000905148-24-003131 filed by Brevan Howard Capital 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.