Renaissance Technologies LLC
- SEC CIK
- 0001037389
- Latest filing
- Aug 13, 2026
CIEN holding history
Ciena Corp in every 13F filed by Renaissance Technologies LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
CIEN overviewAll 13F holders of CIENFull Q2 2026 holdings
- Shares (Q2 2026)
- 184,774
- Value
- $90.6M
- % of portfolio
- 0.1%
- Quarters held
- 7
- Since Q4 2021
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 184,774 | $90.6M | 0.1% | +86,974+88.9% | Added | Holders |
| Q1 2026 | 97,800 | $38.0M | 0.1% | +65,200+200.0% | Added | Holders |
| Q4 2025 | 32,600 | $7.62M | <0.1% | +32,600 | New | Holders |
| Q2 2025 | 0 | $0 | 0.0% | −309,174−100.0% | Sold out | Holders |
| Q1 2025 | 309,174 | $18.7M | <0.1% | +309,174 | New | Holders |
| Q1 2024 | 0 | $0 | 0.0% | −134,674−100.0% | Sold out | Holders |
| Q4 2023 | 134,674 | $6.06M | <0.1% | +134,674 | New | Holders |
| Q2 2022 | 0 | $0 | 0.0% | −37,974−100.0% | Sold out | Holders |
| Q1 2022 | 37,974 | $2.30M | <0.1% | −173,000−82.0% | Reduced | Holders |
| Q4 2021 | 210,974 | $16.2M | <0.1% | +210,974 | New | Holders |