Skip to content
Disclosery

Impax Asset Management Group plc: CIEN position timeline

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

Impax Asset Management Group plc held 0 CIEN shares at 2026-03-31 per its 13F-HR filed 2026-05-12.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -31,239 shares

    13F-HR 0001749768-26-000002 filed by Impax Asset Management Group 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 ended2025-12-31
    13F 31,239 shares
    Change vs previous 13F -79,000 shares

    0.05% of the 13F portfolio, value $7,305,865.

    13F-HR 0001749768-26-000001 filed by Impax Asset Management Group plc
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-09-30
    13F 110,239 shares
    Change vs previous 13F -79,675 shares

    0.09% of the 13F portfolio, value $16,058,515.

    13F-HR 0001749768-25-000052 filed by Impax Asset Management Group plc
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 189,914 shares
    Change vs previous 13F +40,000 shares

    0.09% of the 13F portfolio, value $15,445,706.

    13F-HR 0001749768-25-000049 filed by Impax Asset Management Group plc
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 149,914 shares
    Change vs previous 13F +19,500 shares

    0.05% of the 13F portfolio, value $9,059,303.

    13F-HR 0001749768-25-000042 filed by Impax Asset Management Group plc
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-12-31
    13F 130,414 shares
    Change vs previous 13F -80,650 shares

    0.05% of the 13F portfolio, value $11,060,411.

    13F-HR 0001749768-25-000039 filed by Impax Asset Management Group plc
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-09-30
    13F/A 211,064 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $12,999,432.

    13F-HR/A 0001749768-24-000024 filed by Impax Asset Management Group plc
    Filed (acceptance time not in the bulk data set), ingested

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