Last updated Aug 4, 2026
CIENA CORP (CIEN) is a publicly traded company. This page tracks every superinvestor 13F holding, congressional stock trade, and Form 4 insider transaction in CIEN. Across our datasets, 3 superinvestors hold CIEN and 4 members of Congress have traded it.
Notable holders include Ray Dalio, Mairs & Power, and Christopher Bloomstran. Active congressional traders include Lisa McClain, Ro Khanna, and John James.
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