CIEN
CIENA CORP
Latest close $417.01 as of Aug 5, 2026
Schedule 13G/13D reports beneficial ownership at an observation date. “Accumulation” or “reduction” is inferred
from changes in reported shares when available; it is not a list of individual trades or exact execution prices.
Form 13F rows are quarter-end holding context only and do not establish an exact entry date.
Free access includes current parsed ownership filings, reported share changes, and ownership-percentage changes.
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Beneficial ownership filing history
Showing 3 of 5 parsed filing(s) · 2 older require more history access| Holder | Observed / filed | Reported change | Shares | Ownership | Observation | Filing | Latest |
|---|---|---|---|---|---|---|---|
| BlackRock CIK0002012383 | Mar 31, 2026 observed Apr 24, 2026 filed · 24d Schedule 13G amendment | Reported reduction | 11.3M -3.3M | 12.00% 0.00 pts | $388.23 | $520.80 | $417.01 |
| JPMorgan Chase / Asset Management CIK0000019617 | Dec 31, 2025 observed Jan 21, 2026 filed · 21d Initial Schedule 13G | Initial Schedule 13G | 10.9M | 12.00% | $233.87 | $231.89 | $417.01 |
| BlackRock CIK0002012383 | Nov 30, 2025 observed Dec 4, 2025 filed · 4d Schedule 13G amendment | Earliest Schedule 13G amendment found | 14.5M | 12.00% | $204.21 | $195.73 | $417.01 |