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Disclosery

Czech National Bank: CIEN position timeline

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

Czech National Bank held 40,672 CIEN shares at 2026-09-30 per its 13F-HR filed 2026-10-13.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 40,672 shares
    Change vs previous 13F +425 shares

    0.08% of the 13F portfolio, value $14,309,223.

    13F-HR 0001908923-26-000004 filed by Czech National Bank
    Accepted , ingested

  2. period ended2026-06-30
    13F 40,247 shares
    Change vs previous 13F +1,886 shares

    0.11% of the 13F portfolio, value $19,743,568.

    13F-HR 0001908923-26-000003 filed by Czech National Bank
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 38,361 shares
    Change vs previous 13F not available

    0.1% of the 13F portfolio, value $14,892,891.

    13F-HR 0001908923-26-000002 filed by Czech National Bank
    Filed (acceptance time not in the bulk data set), ingested

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