WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 1,885,678 Value ($000) $139,431 Avg Close $70.79 Range $55.84 - $82.75
Q3 2025
Shares 1,300,240 Value ($000) $100,195 Avg Close $82.33 Range $73.94 - $91.41
Q2 2025
Shares 1,275,169 Value ($000) $96,827 Avg Close $80.28 Range $67.52 - $99.92
Q1 2025
Shares 939,669 Value ($000) $93,983 Avg Close $108.01 Range $95.27 - $116.71
Q4 2024
Shares 934,122 Value ($000) $107,092 Avg Close $126.38 Range $109.67 - $146.31
Q3 2024
Shares 890,578 Value ($000) $133,844 Avg Close $139.25 Range $125.61 - $148.72
Q2 2024
Shares 926,952 Value ($000) $134,253 Avg Close $148.16 Range $138.77 - $156.68
Q1 2024
Shares 969,423 Value ($000) $148,128 Avg Close $135.33 Range $113.88 - $147.53
Q4 2023
Shares 1,026,066 Value ($000) $143,615 Avg Close $121.60 Range $107.83 - $137.84
Q3 2023
Shares 1,102,549 Value ($000) $137,462 Avg Close $122.44 Range $108.80 - $131.81
Q2 2023
Shares 1,251,871 Value ($000) $149,562 Avg Close $108.79 Range $98.37 - $116.78
Q1 2023
Shares 1,470,450 Value ($000) $170,531 Avg Close $109.37 Range $92.83 - $119.59
Q4 2022
Shares 1,708,835 Value ($000) $175 Avg Close $95.20 Range $80.55 - $107.11
Q3 2022
Shares 2,138,368 Value ($000) $185,776 Avg Close $90.33 Range $76.70 - $104.08
Q2 2022
Shares 2,277,403 Value ($000) $223,225 Avg Close $115.03 Range $86.41 - $132.48
Q1 2022
Shares 2,279,597 Value ($000) $281,308 Avg Close $102.15 Range $87.54 - $119.36
Q4 2021
Shares 2,280,323 Value ($000) $221,487 Avg Close $91.08 Range $82.73 - $97.95
Q3 2021
Shares 2,309,902 Value ($000) $210,530 Avg Close $79.74 Range $72.56 - $88.16
Q2 2021
Shares 2,278,426 Value ($000) $205,260 Avg Close $90.14 Range $80.84 - $98.96
Q1 2021
Shares 2,332,583 Value ($000) $207,116 Avg Close $80.32 Range $68.77 - $90.16
Q4 2020
Shares 2,344,834 Value ($000) $191,338 Avg Close $68.91 Range $56.02 - $78.45
Q3 2020
Shares 2,343,385 Value ($000) $148,140 Avg Close $54.23 Range $46.16 - $63.35
Q2 2020
Shares 2,273,869 Value ($000) $121,996 Avg Close $42.05 Range $30.99 - $55.36
Q1 2020
Shares 1,919,812 Value ($000) $73,272 Avg Close $51.06 Range $26.40 - $65.18
Q4 2019
Shares 1,560,309 Value ($000) $109,444 Avg Close $60.78 Range $52.18 - $68.35
Q3 2019
Shares 1,494,179 Value ($000) $97,900 Avg Close $57.99 Range $50.43 - $64.27
Q2 2019
Shares 1,392,478 Value ($000) $96,721 Avg Close $59.69 Range $51.40 - $69.93
Q1 2019
Shares 1,179,287 Value ($000) $80,028 Avg Close $64.77 Range $57.75 - $72.34
Q4 2018
Shares 1,172,825 Value ($000) $77,597 Avg Close $64.35 Range $53.36 - $76.44
Q3 2018
Shares 1,164,329 Value ($000) $96,776 Avg Close $86.83 Range $72.82 - $100.10
Q2 2018
Shares 1,130,411 Value ($000) $121,660 Avg Close $99.34 Range $90.39 - $110.06
Q1 2018
Shares 1,126,912 Value ($000) $125,256 Avg Close $98.39 Range $86.89 - $107.41
Q4 2017
Shares 1,132,347 Value ($000) $120,633 Avg Close $81.78 Range $72.56 - $95.02
Q3 2017
Shares 1,158,262 Value ($000) $96,243 Avg Close $64.66 Range $57.52 - $74.59
Q2 2017
Shares 1,186,361 Value ($000) $78,544 Avg Close $55.73 Range $52.23 - $59.49
Q1 2017
Shares 1,212,176 Value ($000) $80,060 Avg Close $55.38 Range $49.25 - $59.68
Q4 2016
Shares 1,216,471 Value ($000) $68,114 Avg Close $47.64 Range $42.61 - $53.78
Q3 2016
Shares 1,337,352 Value ($000) $71,544 Avg Close $41.92 Range $34.93 - $47.03
Q2 2016
Shares 1,267,872 Value ($000) $54,413 Avg Close $39.55 Range $34.26 - $45.64
Q1 2016
Shares 1,216,765 Value ($000) $56,340 Avg Close $39.11 Range $34.33 - $46.52
Q4 2015
Shares 955,188 Value ($000) $51,889 Avg Close $49.75 Range $44.01 - $54.52
Q3 2015
Shares 1,031,259 Value ($000) $53,509 Avg Close $49.96 Range $42.26 - $59.13
Q2 2015
Shares 802,098 Value ($000) $55,016 Avg Close $62.10 Range $58.06 - $67.58
Q1 2015
Shares 790,989 Value ($000) $56,904 Avg Close $54.56 Range $46.07 - $62.01
Q4 2014
Shares 933,642 Value ($000) $57,038 Avg Close $57.80 Range $45.45 - $73.16
Q3 2014
Shares 1,106,021 Value ($000) $95,777 Avg Close $76.69 Range $70.51 - $83.52
Q2 2014
Shares 1,109,301 Value ($000) $92,914 Avg Close $63.36 Range $52.18 - $72.01
Q1 2014
Shares 1,118,138 Value ($000) $73,995 Avg Close $53.68 Range $48.11 - $58.70
Q4 2013
Shares 701,648 Value ($000) $85,649 Avg Close $47.34 Range $43.59 - $51.55
Q3 2013
Shares 1,024,863 Value ($000) $107,261 Avg Close $42.90 Range $40.28 - $45.40
Q2 2013
Shares 1,439,002 Value ($000) $138,736 Avg Close $37.72 Range $32.17 - $41.82