Boston Partners
- SEC CIK
- 0001386060
- Latest filing
- Aug 4, 2026
CIEN holding history
Ciena Corp in every 13F filed by Boston Partners, 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 (Q3 2024)
- 0
- Sold out in Q3 2024
- Value
- $0
- % of portfolio
- 0.0%
- Quarters held
- 6
- Since Q1 2023
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q3 2024 | 0 | $0 | 0.0% | −204,906−100.0% | Sold out | Holders |
| Q2 2024 | 204,906 | $9.87M | <0.1% | −8,461−4.0% | Reduced | Holders |
| Q1 2024 | 213,367 | $10.5M | <0.1% | −16,004−7.0% | Reduced | Holders |
| Q4 2023 | 229,371 | $10.3M | <0.1% | −14,550−6.0% | Reduced | Holders |
| Q3 2023 | 243,921 | $11.5M | <0.1% | −4,871−2.0% | Reduced | Holders |
| Q2 2023 | 248,792 | $10.6M | <0.1% | −19,236−7.2% | Reduced | Holders |
| Q1 2023 | 268,028 | $14.1M | <0.1% | +268,028 | New | Holders |