Ciena Corporation shares owned by Robeco Institutional Asset Management B V
Quarter-by-quarter ownership of Ciena Corporation (CIEN) shares owned by Robeco Institutional Asset Management B V
from 13F filings
Historical chart of Robeco Institutional Asset Management B V investment in Ciena Corporation
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Quarterly reported holdings in Ciena Corporation by Robeco Institutional Asset Management B V
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2026-03-31 | $104M | 268k | 388.23 |
| 2025-12-31 | $12M | 52k | 233.87 |
| 2025-09-30 | $217k | 1.5k | 145.67 |
| 2025-06-30 | $3.4M | 42k | 81.33 |
| 2025-03-31 | $2.6M | 42k | 60.43 |
| 2024-12-31 | $3.6M | 42k | 84.81 |
| 2024-09-30 | $2.6M | 42k | 61.59 |
| 2024-06-30 | $2.0M | 42k | 48.18 |
| 2020-09-30 | $7.7M | 193k | 39.69 |
| 2020-06-30 | $9.6M | 178k | 54.16 |
| 2020-03-31 | $10M | 258k | 39.81 |
| 2019-12-31 | $11M | 258k | 42.68 |
| 2019-09-30 | $14M | 344k | 39.23 |
| 2019-06-30 | $15M | 367k | 41.13 |
| 2019-03-31 | $14M | 370k | 37.34 |
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