Westlake Chemical Corporation shares owned by California State Teachers Retirement System
Quarter-by-quarter ownership of Westlake Chemical Corporation (WLK) shares owned by California State Teachers Retirement System
from 13F filings
Historical chart of California State Teachers Retirement System investment in Westlake Chemical Corporation
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Quarterly reported holdings in Westlake Chemical Corporation by California State Teachers Retirement System
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $161k | 2.1k | 77.06 |
| 2025-06-30 | $159k | 2.1k | 75.93 |
| 2025-03-31 | $4.5M | 45k | 100.03 |
| 2024-12-31 | $5.2M | 45k | 114.65 |
| 2024-09-30 | $7.1M | 48k | 150.29 |
| 2024-06-30 | $7.3M | 50k | 144.82 |
| 2024-03-31 | $7.8M | 51k | 152.80 |
| 2023-09-30 | $6.7M | 54k | 124.67 |
| 2023-06-30 | $6.8M | 57k | 119.47 |
| 2023-03-31 | $6.8M | 58k | 115.98 |
| 2022-12-31 | $6.0M | 59k | 102.54 |
| 2022-09-30 | $5.5M | 63k | 86.87 |
| 2022-06-30 | $6.2M | 63k | 98.02 |
| 2022-03-31 | $5.8M | 47k | 123.41 |
| 2021-12-31 | $4.9M | 51k | 97.13 |
| 2021-09-30 | $5.5M | 60k | 91.13 |
| 2021-06-30 | $5.1M | 57k | 90.08 |
| 2021-03-31 | $5.2M | 59k | 88.79 |
| 2020-12-31 | $4.8M | 59k | 81.59 |
| 2020-09-30 | $3.7M | 58k | 63.22 |
| 2020-06-30 | $3.1M | 57k | 53.65 |
| 2020-03-31 | $2.2M | 59k | 38.18 |
| 2019-12-31 | $3.8M | 55k | 70.15 |
| 2019-09-30 | $3.9M | 56k | 69.47 |
| 2019-06-30 | $3.9M | 56k | 69.47 |
| 2019-03-31 | $4.0M | 59k | 67.87 |
| 2018-12-31 | $3.9M | 59k | 66.17 |
| 2018-09-30 | $4.7M | 56k | 83.11 |
| 2018-06-30 | $6.1M | 56k | 107.63 |
| 2018-03-31 | $6.3M | 56k | 111.16 |
| 2017-12-31 | $6.2M | 58k | 106.54 |
| 2017-09-30 | $4.9M | 58k | 83.09 |
| 2017-06-30 | $4.3M | 65k | 66.20 |
| 2017-03-31 | $5.1M | 78k | 66.05 |
| 2016-12-31 | $4.5M | 81k | 55.99 |
| 2016-09-30 | $4.4M | 83k | 53.50 |
| 2016-06-30 | $3.5M | 82k | 42.93 |
| 2016-03-31 | $4.1M | 88k | 46.30 |
| 2015-12-31 | $4.2M | 77k | 54.32 |
| 2015-09-30 | $3.9M | 76k | 51.88 |
| 2015-06-30 | $5.0M | 74k | 68.59 |
| 2015-03-31 | $5.4M | 76k | 71.94 |
| 2014-12-31 | $4.7M | 77k | 61.09 |
| 2014-09-30 | $6.6M | 76k | 86.59 |
| 2014-06-30 | $6.4M | 76k | 83.76 |
| 2014-03-31 | $4.9M | 74k | 66.18 |
| 2013-12-31 | $4.5M | 37k | 122.06 |
| 2013-09-30 | $3.8M | 37k | 104.66 |
| 2013-06-30 | $3.4M | 36k | 96.42 |
| 2013-03-31 | $3.3M | 35k | 93.49 |
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