WESTLAKE CHEM CORP

CUSIP: 96041310 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q2 2016
Shares 989,596 Value ($000) $42,473 Avg Close — Range —
Q1 2016
Shares 52,300 Value ($000) $2,421 Avg Close — Range —
Q4 2015
Shares 51,600 Value ($000) $2,803 Avg Close — Range —
Q3 2015
Shares 220,162 Value ($000) $15,101 Avg Close — Range —
Q2 2015
Shares 220,162 Value ($000) $15,101 Avg Close — Range —
Q1 2015
Shares 106,096 Value ($000) $7,633 Avg Close — Range —
Q4 2014
Shares 396,680 Value ($000) $24,233 Avg Close — Range —
Q3 2014
Shares 283,822 Value ($000) $24,576 Avg Close — Range —
Q2 2014
Shares 10,121 Value ($000) $848 Avg Close — Range —
Q1 2014
Shares 38,980 Value ($000) $2,580 Avg Close — Range —
Q4 2013
Shares 19,514 Value ($000) $2,382 Avg Close — Range —
Q2 2013
Shares 71,854 Value ($000) $6,927 Avg Close — Range —