WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q3 2021
Shares 22,155 Value ($000) $2,019 Avg Close $79.74 Range $72.56 - $88.16
Q1 2019
Shares 1 Value ($000) $0 Avg Close $64.77 Range $57.75 - $72.34
Q4 2018
Shares 683 Value ($000) $45 Avg Close $64.35 Range $53.36 - $76.44
Q2 2018
Shares 499 Value ($000) $54 Avg Close $99.34 Range $90.39 - $110.06
Q3 2017
Shares 34 Value ($000) $3 Avg Close $64.66 Range $57.52 - $74.59
Q2 2017
Shares 95 Value ($000) $6 Avg Close $55.73 Range $52.23 - $59.49
Q1 2017
Shares 997 Value ($000) $66 Avg Close $55.38 Range $49.25 - $59.68
Q4 2016
Shares 917 Value ($000) $51 Avg Close $47.64 Range $42.61 - $53.78
Q3 2016
Shares 1,563 Value ($000) $84 Avg Close $41.92 Range $34.93 - $47.03
Q2 2016
Shares 7,942 Value ($000) $341 Avg Close $39.55 Range $34.26 - $45.64
Q1 2016
Shares 8,971 Value ($000) $415 Avg Close $39.11 Range $34.33 - $46.52
Q4 2015
Shares 2,057 Value ($000) $112 Avg Close $49.75 Range $44.01 - $54.52
Q1 2015
Shares 24,841 Value ($000) $1,787 Avg Close $54.56 Range $46.07 - $62.01
Q4 2014
Shares 1,447 Value ($000) $88 Avg Close $57.80 Range $45.45 - $73.16
Q3 2014
Shares 2,731 Value ($000) $236 Avg Close $76.69 Range $70.51 - $83.52
Q2 2014
Shares 5,821 Value ($000) $488 Avg Close $63.36 Range $52.18 - $72.01
Q1 2014
Shares 8,201 Value ($000) $543 Avg Close $53.68 Range $48.11 - $58.70
Q4 2013
Shares 136 Value ($000) $17 Avg Close $47.34 Range $43.59 - $51.55
Q3 2013
Shares 594 Value ($000) $62 Avg Close $42.90 Range $40.28 - $45.40
Q2 2013
Shares 2,024 Value ($000) $195 Avg Close $37.72 Range $32.17 - $41.82