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Disclosery

National Pension Service: CIEN position timeline

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

National Pension Service held 272,251 CIEN shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 272,251 shares
    Change vs previous 13F -26,292 shares

    0.09% of the 13F portfolio, value $133,555,451.

    13F-HR 0001193125-26-347818 filed by National Pension Service
    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 298,543 shares
    Change vs previous 13F +86,122 shares

    0.09% of the 13F portfolio, value $115,903,349.

    13F-HR 0001193125-26-217663 filed by National Pension Service
    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 212,421 shares
    Change vs previous 13F not available

    0.04% of the 13F portfolio, value $49,678,899.

    13F-HR 0001608046-26-000001 filed by National Pension Service
    Filed (acceptance time not in the bulk data set), ingested

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