Stock research
CIEN — CIENA CORP
CIEN is reported by 10 tracked managers with $1.1B in visible reported value. This page connects ownership breadth, filing activity, and price context.
Stock research evidence
The latest visible filing snapshot is 2026 Q2. Values come from reported manager holdings; prices and 52-week context come from the latest available market quote.
- Tracked holders
- 10
- Reported value
- $1.1B
- Ownership breadth
- Not available
- Current price
- $350
Top reported managers
These managers have the largest visible reported positions in CIEN. Portfolio weight is measured within each manager's latest visible filing.
- Cliff Asness0.2% of reported portfolio · $507.2M · Filed Aug 14, 2026
- Primecap0.1% of reported portfolio · $151.1M · Reduce · Filed Aug 14, 2026
- Ken Griffin0.1% of reported portfolio · $105.0M · Add · Filed Aug 14, 2026
- Jim Simons0.1% of reported portfolio · $90.6M · Add · Filed Aug 13, 2026
- Israel Englander0.1% of reported portfolio · $81.6M · Filed Aug 14, 2026
Continue the research
Review the manager roster, compare this company with the most widely held stocks, or browse transparent screens built from the same filing-backed data.