Westlake Chemical Corporation shares owned by Robert E. Robotti
Quarter-by-quarter ownership of Westlake Chemical Corporation (WLK) shares owned by Robert E. Robotti
from 13F filings
Historical chart of Robert E. Robotti investment in Westlake Chemical Corporation
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Quarterly reported holdings in Westlake Chemical Corporation by Robert E. Robotti
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $14M | 182k | 77.06 |
| 2025-06-30 | $7.5M | 183k | 40.78 |
| 2025-03-31 | $17M | 165k | 100.03 |
| 2024-12-31 | $19M | 164k | 114.65 |
| 2024-09-30 | $25M | 164k | 150.29 |
| 2024-06-30 | $24M | 164k | 144.82 |
| 2024-03-31 | $26M | 168k | 152.80 |
| 2023-12-31 | $32M | 227k | 139.96 |
| 2023-09-30 | $28M | 228k | 124.67 |
| 2023-06-30 | $27M | 228k | 119.47 |
| 2023-03-31 | $27M | 229k | 115.98 |
| 2022-12-31 | $24M | 229k | 102.54 |
| 2022-09-30 | $20M | 230k | 86.88 |
| 2022-06-30 | $23M | 230k | 98.02 |
| 2022-03-31 | $28M | 230k | 123.40 |
| 2021-12-31 | $13M | 132k | 97.13 |
| 2021-09-30 | $21M | 231k | 91.14 |
| 2021-06-30 | $21M | 230k | 90.09 |
| 2021-03-31 | $23M | 259k | 88.79 |
| 2020-12-31 | $21M | 262k | 81.60 |
| 2020-09-30 | $17M | 267k | 63.22 |
| 2020-06-30 | $15M | 276k | 53.65 |
| 2020-03-31 | $12M | 303k | 38.17 |
| 2019-12-31 | $20M | 288k | 70.15 |
| 2019-09-30 | $19M | 289k | 65.52 |
| 2019-06-30 | $20M | 290k | 69.46 |
| 2019-03-31 | $20M | 296k | 67.72 |
| 2018-12-31 | $20M | 298k | 66.17 |
| 2018-09-30 | $22M | 262k | 83.11 |
| 2018-06-30 | $28M | 261k | 107.63 |
| 2018-03-31 | $30M | 265k | 111.15 |
| 2017-12-31 | $29M | 267k | 106.53 |
| 2017-09-30 | $22M | 269k | 83.09 |
| 2017-06-30 | $18M | 271k | 65.73 |
| 2017-03-31 | $18M | 272k | 66.05 |
| 2016-12-31 | $15M | 271k | 55.99 |
| 2016-09-30 | $15M | 271k | 53.50 |
| 2016-06-30 | $12M | 272k | 42.92 |
| 2016-03-31 | $3.5M | 76k | 46.30 |
| 2015-12-31 | $4.0M | 74k | 54.33 |
| 2014-06-30 | $1.7M | 20k | 83.75 |
| 2014-03-31 | $1.3M | 20k | 66.20 |
| 2013-12-31 | $1.2M | 10k | 122.10 |
| 2013-09-30 | $1.0M | 10k | 104.70 |
| 2013-06-30 | $964k | 10k | 96.40 |
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