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Disclosery

Capital World Investors: CIEN position timeline

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

Capital World Investors held 1,755,602 CIEN shares at 2026-06-30 per its 13F-HR filed 2026-08-12.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,755,602 shares
    Change vs previous 13F +30,795 shares

    0.1% of the 13F portfolio, value $861,228,117.

    13F-HR 0001422849-26-000113 filed by Capital World Investors
    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 1,724,807 shares
    Change vs previous 13F -144,074 shares

    0.09% of the 13F portfolio, value $669,621,822.

    13F-HR 0001422849-26-000046 filed by Capital World Investors
    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 1,868,881 shares
    Change vs previous 13F +31,900 shares

    0.06% of the 13F portfolio, value $437,075,199.

    13F-HR 0001422849-26-000010 filed by Capital World Investors
    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 1,836,981 shares
    Change vs previous 13F +130,507 shares

    0.04% of the 13F portfolio, value $267,593,022.

    13F-HR 0001422849-25-000069 filed by Capital World Investors
    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 1,706,474 shares
    Change vs previous 13F -146,535 shares

    0.02% of the 13F portfolio, value $138,787,530.

    13F-HR 0001422848-25-000151 filed by Capital World Investors
    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 1,853,009 shares
    Change vs previous 13F not available

    0.02% of the 13F portfolio, value $111,977,334.

    13F-HR 0000732812-25-000016 filed by Capital World Investors
    Filed (acceptance time not in the bulk data set), ingested

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