Millennium Management — WLK Trade History
Quarter-by-quarter changes in the WESTLAKE CORPORATION position · CUSIP 960413102
Currently held · 9.5 YearsFirst seen: 2016 Q3
| Quarter | Filed | Activity | Shares | Δ Shares | Δ % | Value | % Port. |
|---|---|---|---|---|---|---|---|
| 2026 Q2 | 2026-08-14 | Add | 366,074 | 281,077 | +330.7% | $26.7M | 0.01% |
| 2026 Q1 | 2026-05-15 | Reduce | 84,997 | -342,757 | -80.1% | $9.9M | 0.00% |
| 2025 Q4 | 2026-02-17 | Add | 427,754 | 321,434 | +302.3% | $31.6M | 0.01% |
| 2025 Q3 | 2025-11-14 | Reduce | 106,320 | -683,526 | -86.5% | $8.2M | 0.00% |
| 2025 Q2 | 2025-08-14 | Reduce | 789,846 | -111,383 | -12.4% | $60.0M | 0.03% |
| 2025 Q1 | 2025-05-15 | Add | 901,229 | 708,142 | +366.7% | $90.1M | 0.05% |
| 2024 Q4 | 2025-02-14 | Add | 193,087 | 106,329 | +122.6% | $22.1M | 0.01% |
| 2024 Q3 | 2024-11-14 | Reduce | 86,758 | -44,858 | -34.1% | $13.0M | 0.01% |
| 2024 Q2 | 2024-08-14 | Add | 131,616 | 35,331 | +36.7% | $19.1M | 0.01% |
| 2024 Q1 | 2024-05-15 | Add | 96,285 | 71,410 | +287.1% | $14.7M | 0.01% |
| 2023 Q4 | 2024-02-14 | Reduce | 24,875 | -175,389 | -87.6% | $3.5M | 0.00% |
| 2023 Q3 | 2023-11-14 | Add | 200,264 | 174,483 | +676.8% | $25.0M | 0.01% |
| 2023 Q2 | 2023-08-14 | Add | 25,781 | 22,253 | +630.8% | $3.1M | 0.00% |
| 2023 Q1 | 2023-05-15 | Reduce | 3,528 | -4,925 | -58.3% | $409.00 | — |
| 2022 Q4 | 2023-02-14 | Reduce | 8,453 | -121,133 | -93.5% | $867.00 | — |
| 2022 Q3 | 2022-11-14 | Add | 129,586 | 107,925 | +498.2% | $11.3M | 0.01% |
| 2022 Q2 | 2022-08-15 | Reduce | 21,661 | -94,365 | -81.3% | $2.1M | 0.00% |
| 2022 Q1 | 2022-05-16 | Reduce | 116,026 | -24,767 | -17.6% | $14.3M | 0.01% |
| 2021 Q4 | 2022-02-14 | Reduce | 140,793 | -1,150,643 | -89.1% | $13.7M | 0.01% |
| 2021 Q3 | 2021-11-15 | Add | 1,291,436 | 612,509 | +90.2% | $117.7M | 0.07% |
| 2021 Q2 | 2021-08-16 | Reduce | 678,927 | -731,255 | -51.9% | $61.2M | 0.04% |
| 2021 Q1 | 2021-05-17 | Add | 1,410,182 | 1,399,844 | +13540.8% | $125.2M | 0.09% |
| 2020 Q4 | 2021-02-16 | Reduce | 10,338 | -48,510 | -82.4% | $844.0K | 0.00% |
| 2020 Q3 | 2020-11-16 | Reduce | 58,848 | -534,031 | -90.1% | $3.7M | 0.01% |
| 2020 Q2 | 2020-08-14 | Reduce | 592,879 | -64,986 | -9.9% | $31.8M | 0.04% |
| 2020 Q1 | 2020-05-14 | Reduce | 657,865 | -234,805 | -26.3% | $25.1M | 0.06% |
| 2019 Q4 | 2020-02-14 | Add | 892,670 | 477,437 | +115.0% | $62.6M | 0.08% |
| 2019 Q3 | 2019-11-14 | Reduce | 415,233 | -81,566 | -16.4% | $27.2M | 0.04% |
| 2019 Q2 | 2019-08-15 | Reduce | 496,799 | -580,332 | -53.9% | $34.5M | 0.05% |
| 2019 Q1 | 2019-05-14 | Add | 1,077,131 | 243,107 | +29.1% | $73.1M | 0.11% |
| 2018 Q4 | 2019-02-15 | Add | 834,024 | 422,380 | +102.6% | $55.2M | 0.09% |
| 2018 Q3 | 2018-11-14 | Add | 411,644 | 169,090 | +69.7% | $34.2M | 0.04% |
| 2018 Q2 | 2018-08-14 | Add | 242,554 | 18,107 | +8.1% | $26.1M | 0.03% |
| 2018 Q1 | 2018-05-15 | Reduce | 224,447 | -503,231 | -69.2% | $24.9M | 0.03% |
| 2017 Q4 | 2018-02-14 | Reduce | 727,678 | -615,365 | -45.8% | $77.5M | 0.11% |
| 2017 Q3 | 2017-11-14 | Add | 1,343,043 | 942,913 | +235.7% | $111.6M | 0.17% |
| 2017 Q2 | 2017-08-14 | Reduce | 400,130 | -378,890 | -48.6% | $26.5M | 0.05% |
| 2017 Q1 | 2017-05-15 | New | 779,020 | 779,020 | — | $51.5M | 0.09% |
| 2016 Q4 | 2017-02-14 | Sold out | — | -15,909 | -100.0% | — | — |
| 2016 Q3 | 2016-11-14 | New | 15,909 | 15,909 | — | $851.0K | 0.00% |
Share counts are split-adjusted. Time held counts consecutive quarters ending with the latest filing; more than ten years shows as ">10 Years".
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.