WESTLAKE CHEM CORP

Ticker: WLK CUSIP: 960413102 Class: Common Stock

STEVENS CAPITAL MANAGEMENT LP's Holding History (CIK: 0001134813)

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

Q1 2018

Shares 12,052 Value ($000) $1,340 Avg Close $98.39 Range $86.89 - $107.41

Q4 2017

Shares 21,739 Value ($000) $2,316 Avg Close $81.78 Range $72.56 - $95.02

Q2 2016

Shares 20,555 Value ($000) $882 Avg Close $39.55 Range $34.26 - $45.64

Q1 2016

Shares 78,078 Value ($000) $3,615 Avg Close $39.11 Range $34.33 - $46.52

Q4 2015

Shares 69,948 Value ($000) $3,800 Avg Close $49.75 Range $44.01 - $54.52

Q2 2015

Shares 16,400 Value ($000) $1,125 Avg Close $62.10 Range $58.06 - $67.58

Q4 2014

Shares 9,334 Value ($000) $570 Avg Close $57.80 Range $45.45 - $73.16

Q3 2014

Shares 38,375 Value ($000) $3,323 Avg Close $76.69 Range $70.51 - $83.52

Q4 2013

Shares 4,900 Value ($000) $598 Avg Close $47.34 Range $43.59 - $51.55

Q3 2013

Shares 20,185 Value ($000) $2,113 Avg Close $42.90 Range $40.28 - $45.40

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	12,052	$1,340	$98.39	$86.89 - $107.41
Q4 2017	21,739	$2,316	$81.78	$72.56 - $95.02
Q2 2016	20,555	$882	$39.55	$34.26 - $45.64
Q1 2016	78,078	$3,615	$39.11	$34.33 - $46.52
Q4 2015	69,948	$3,800	$49.75	$44.01 - $54.52
Q2 2015	16,400	$1,125	$62.10	$58.06 - $67.58
Q4 2014	9,334	$570	$57.80	$45.45 - $73.16
Q3 2014	38,375	$3,323	$76.69	$70.51 - $83.52
Q4 2013	4,900	$598	$47.34	$43.59 - $51.55
Q3 2013	20,185	$2,113	$42.90	$40.28 - $45.40