WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q4 2025
Shares 1,981 Value ($000) $146 Avg Close $70.79 Range $55.84 - $82.75
Q1 2025
Shares 146 Value ($000) $0 Avg Close $108.01 Range $95.27 - $116.71
Q4 2024
Shares 2,229 Value ($000) $0 Avg Close $126.38 Range $109.67 - $146.31
Q2 2024
Shares 1,722 Value ($000) $0 Avg Close $148.16 Range $138.77 - $156.68
Q4 2022
Shares 41 Value ($000) $0 Avg Close $95.20 Range $80.55 - $107.11
Q3 2022
Shares 4,682 Value ($000) $406 Avg Close $90.33 Range $76.70 - $104.08
Q2 2022
Shares 4,394 Value ($000) $430 Avg Close $115.03 Range $86.41 - $132.48
Q1 2022
Shares 231 Value ($000) $28 Avg Close $102.15 Range $87.54 - $119.36
Q4 2021
Shares 200 Value ($000) $19 Avg Close $91.08 Range $82.73 - $97.95
Q3 2021
Shares 1,112 Value ($000) $101 Avg Close $79.74 Range $72.56 - $88.16
Q2 2021
Shares 1,112 Value ($000) $100 Avg Close $90.14 Range $80.84 - $98.96
Q1 2021
Shares 1,201 Value ($000) $106 Avg Close $80.32 Range $68.77 - $90.16
Q1 2020
Shares 12,178 Value ($000) $464 Avg Close $51.06 Range $26.40 - $65.18
Q4 2018
Shares 12,562 Value ($000) $831 Avg Close $64.35 Range $53.36 - $76.44
Q3 2018
Shares 4,904 Value ($000) $407 Avg Close $86.83 Range $72.82 - $100.10
Q4 2017
Shares 3,297 Value ($000) $351 Avg Close $81.78 Range $72.56 - $95.02
Q2 2017
Shares 7,875 Value ($000) $521 Avg Close $55.73 Range $52.23 - $59.49
Q2 2016
Shares 5,262 Value ($000) $225 Avg Close $39.55 Range $34.26 - $45.64
Q1 2016
Shares 296 Value ($000) $13 Avg Close $39.11 Range $34.33 - $46.52
Q3 2015
Shares 4,562 Value ($000) $236 Avg Close $49.96 Range $42.26 - $59.13
Q2 2015
Shares 418 Value ($000) $28 Avg Close $62.10 Range $58.06 - $67.58
Q1 2015
Shares 318 Value ($000) $22 Avg Close $54.56 Range $46.07 - $62.01
Q4 2014
Shares 258 Value ($000) $16 Avg Close $57.80 Range $45.45 - $73.16