WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

SEI INVESTMENTS CO's Holding History (CIK: 0000350894)

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

Q4 2025
Shares 28,442 Value ($000) $2,103 Avg Close $70.79 Range $55.84 - $82.75
Q3 2025
Shares 14,767 Value ($000) $1,138 Avg Close $82.33 Range $73.94 - $91.41
Q2 2025
Shares 22,746 Value ($000) $1,727 Avg Close $80.28 Range $67.52 - $99.92
Q1 2025
Shares 8,691 Value ($000) $869 Avg Close $108.01 Range $95.27 - $116.71
Q4 2024
Shares 7,827 Value ($000) $897 Avg Close $126.38 Range $109.67 - $146.31
Q3 2024
Shares 3,976 Value ($000) $597 Avg Close $139.25 Range $125.61 - $148.72
Q2 2024
Shares 14,212 Value ($000) $2,058 Avg Close $148.16 Range $138.77 - $156.68
Q1 2024
Shares 14,771 Value ($000) $2,257 Avg Close $135.33 Range $113.88 - $147.53
Q4 2023
Shares 12,389 Value ($000) $1,734 Avg Close $121.60 Range $107.83 - $137.84
Q3 2023
Shares 15,906 Value ($000) $1,983 Avg Close $122.44 Range $108.80 - $131.81
Q2 2023
Shares 16,276 Value ($000) $1,945 Avg Close $108.79 Range $98.37 - $116.78
Q1 2023
Shares 16,485 Value ($000) $1,912 Avg Close $109.37 Range $92.83 - $119.59
Q4 2022
Shares 15,151 Value ($000) $1,554 Avg Close $95.20 Range $80.55 - $107.11
Q3 2022
Shares 46,759 Value ($000) $4,063 Avg Close $90.33 Range $76.70 - $104.08
Q2 2022
Shares 67,094 Value ($000) $6,576 Avg Close $115.03 Range $86.41 - $132.48
Q1 2022
Shares 60,757 Value ($000) $7,482 Avg Close $102.15 Range $87.54 - $119.36
Q4 2021
Shares 62,896 Value ($000) $6,110 Avg Close $91.08 Range $82.73 - $97.95
Q3 2021
Shares 53,425 Value ($000) $4,878 Avg Close $79.74 Range $72.56 - $88.16
Q2 2021
Shares 40,169 Value ($000) $3,623 Avg Close $90.14 Range $80.84 - $98.96
Q1 2021
Shares 19,032 Value ($000) $1,690 Avg Close $80.32 Range $68.77 - $90.16
Q4 2020
Shares 20,884 Value ($000) $1,704 Avg Close $68.91 Range $56.02 - $78.45
Q3 2020
Shares 25,000 Value ($000) $1,581 Avg Close $54.23 Range $46.16 - $63.35
Q2 2020
Shares 29,513 Value ($000) $1,583 Avg Close $42.05 Range $30.99 - $55.36
Q1 2019
Shares 567 Value ($000) $41 Avg Close $64.77 Range $57.75 - $72.34
Q4 2018
Shares 425 Value ($000) $32 Avg Close $64.35 Range $53.36 - $76.44
Q3 2018
Shares 699 Value ($000) $51 Avg Close $86.83 Range $72.82 - $100.10
Q2 2018
Shares 37,346 Value ($000) $4,019 Avg Close $99.34 Range $90.39 - $110.06
Q1 2018
Shares 34,438 Value ($000) $3,828 Avg Close $98.39 Range $86.89 - $107.41
Q4 2017
Shares 51,099 Value ($000) $5,444 Avg Close $81.78 Range $72.56 - $95.02
Q3 2017
Shares 39,402 Value ($000) $3,273 Avg Close $64.66 Range $57.52 - $74.59
Q2 2017
Shares 57,617 Value ($000) $3,814 Avg Close $55.73 Range $52.23 - $59.49
Q1 2017
Shares 47,469 Value ($000) $3,135 Avg Close $55.38 Range $49.25 - $59.68
Q4 2016
Shares 50,601 Value ($000) $2,833 Avg Close $47.64 Range $42.61 - $53.78
Q3 2016
Shares 33,992 Value ($000) $1,819 Avg Close $41.92 Range $34.93 - $47.03
Q2 2016
Shares 1,211 Value ($000) $52 Avg Close $39.55 Range $34.26 - $45.64
Q1 2016
Shares 1,272 Value ($000) $59 Avg Close $39.11 Range $34.33 - $46.52
Q4 2015
Shares 391 Value ($000) $21 Avg Close $49.75 Range $44.01 - $54.52
Q3 2015
Shares 316 Value ($000) $16 Avg Close $49.96 Range $42.26 - $59.13
Q2 2015
Shares 212 Value ($000) $14 Avg Close $62.10 Range $58.06 - $67.58
Q1 2015
Shares 239 Value ($000) $16 Avg Close $54.56 Range $46.07 - $62.01
Q4 2014
Shares 348 Value ($000) $19 Avg Close $57.80 Range $45.45 - $73.16