Ciena Corporation shares owned by California State Teachers Retirement System
Quarter-by-quarter ownership of Ciena Corporation (CIEN) shares owned by California State Teachers Retirement System
from 13F filings
Historical chart of California State Teachers Retirement System investment in Ciena Corporation
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Quarterly reported holdings in Ciena Corporation by California State Teachers Retirement System
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $19M | 133k | 145.67 |
| 2025-06-30 | $11M | 133k | 81.33 |
| 2025-03-31 | $8.1M | 134k | 60.43 |
| 2024-12-31 | $12M | 135k | 84.81 |
| 2024-09-30 | $8.4M | 137k | 61.59 |
| 2024-06-30 | $6.8M | 142k | 48.18 |
| 2024-03-31 | $7.2M | 146k | 49.45 |
| 2023-09-30 | $7.8M | 166k | 47.26 |
| 2023-06-30 | $7.7M | 182k | 42.49 |
| 2023-03-31 | $9.8M | 186k | 52.52 |
| 2022-12-31 | $9.7M | 190k | 50.98 |
| 2022-09-30 | $7.7M | 191k | 40.43 |
| 2022-06-30 | $9.0M | 196k | 45.70 |
| 2022-03-31 | $12M | 199k | 60.63 |
| 2021-12-31 | $17M | 216k | 76.97 |
| 2021-09-30 | $13M | 260k | 51.35 |
| 2021-06-30 | $15M | 263k | 56.89 |
| 2021-03-31 | $15M | 266k | 54.72 |
| 2020-12-31 | $14M | 266k | 52.85 |
| 2020-09-30 | $10M | 262k | 39.69 |
| 2020-06-30 | $14M | 257k | 54.16 |
| 2020-03-31 | $10M | 255k | 39.81 |
| 2019-12-31 | $10M | 240k | 42.69 |
| 2019-09-30 | $10M | 246k | 41.13 |
| 2019-06-30 | $10M | 246k | 41.13 |
| 2019-03-31 | $8.2M | 220k | 37.34 |
| 2018-12-31 | $7.6M | 224k | 33.91 |
| 2018-09-30 | $6.9M | 219k | 31.24 |
| 2018-06-30 | $5.8M | 219k | 26.51 |
| 2018-03-31 | $5.7M | 219k | 25.90 |
| 2017-12-31 | $4.7M | 223k | 20.93 |
| 2017-09-30 | $5.0M | 226k | 21.97 |
| 2017-06-30 | $6.3M | 250k | 25.02 |
| 2017-03-31 | $6.4M | 271k | 23.61 |
| 2016-12-31 | $6.9M | 283k | 24.41 |
| 2016-09-30 | $6.3M | 291k | 21.80 |
| 2016-06-30 | $5.4M | 289k | 18.75 |
| 2016-03-31 | $5.0M | 262k | 19.02 |
| 2015-12-31 | $4.7M | 229k | 20.69 |
| 2015-09-30 | $4.7M | 225k | 20.72 |
| 2015-06-30 | $5.1M | 215k | 23.68 |
| 2015-03-31 | $3.7M | 192k | 19.31 |
| 2014-12-31 | $3.8M | 196k | 19.41 |
| 2014-09-30 | $3.2M | 194k | 16.72 |
| 2014-06-30 | $4.2M | 192k | 21.66 |
| 2014-03-31 | $4.2M | 185k | 22.74 |
| 2013-12-31 | $4.4M | 184k | 23.93 |
| 2013-09-30 | $4.6M | 183k | 24.98 |
| 2013-06-30 | $3.4M | 177k | 19.42 |
| 2013-03-31 | $2.8M | 172k | 16.01 |
More positions owned by California State Teachers Retirement System
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