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Cornerstone Advisors, LLC: CIEN position timeline

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

Cornerstone Advisors, LLC held 13,961 CIEN shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 13,961 shares
    Change vs previous 13F not available

    0.23% of the 13F portfolio, value $6,848,708.

    13F-HR 0001398344-26-013809 filed by Cornerstone Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec ยง4.2).