Portolan Capital Management’s Westlake Corp WLK Stock Holding History

Portolan Capital Management’s Portfolio WLK Stock Details WLK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2015 Q1	–	Sell	-21,990	Closed	-$1.34M	–	125
2014 Q4	$1.34M	Buy	+21,990	New	+$1.5M	0.27%	95
2014 Q2	–	Sell	-19,031	Closed	-$1.26M	–	140
2014 Q1	$1.26M	Buy	+19,031	New	+$1.21M	0.29%	102

Other funds holding WLK

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Select Equity Group New York $19.5B AUM 17.33% 1-Year Est. Return

Royce & Associates New York $10.1B AUM 42.88% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

GTP

Global Thematic Partners New York $120M AUM 25.18% 1-Year Est. Return

Schroder Investment Management Group London, United Kingdom $122B AUM 29.27% 1-Year Est. Return

BIT

BlackRock Institutional Trust San Francisco, California $675B AUM 16.07% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

JIR

James Investment Research Alpha, Ohio $891M AUM 30.4% 1-Year Est. Return

Portolan Capital Management's WLK Position: Q1 2015 in Review

Portolan Capital Management sold out of Westlake Corp (WLK) in Q1 2015, closing a stake of 21,990 shares — an estimated $1.34M sold.

Portolan Capital Management first reported a position in WLK in Q1 2014 and held it in 2 quarters. The position peaked at $1.34M in Q4 2014. 265 funds tracked by Wall St. Rank hold WLK as of Q1 2015.

Portolan Capital Management reported no remaining Westlake Corp position as of Q1 2015 after selling out during the quarter.
Portolan Capital Management sold 21,990 Westlake Corp shares in Q1 2015, an estimated $1.34M.
Portolan Capital Management first reported a position in Westlake Corp in Q1 2014 and held it in 2 quarters.
Portolan Capital Management's Westlake Corp position peaked at $1.34M in Q4 2014.
265 funds tracked by Wall St. Rank held Westlake Corp as of Q1 2015.

Based on Portolan Capital Management's 13F filing for Q1 2015, filed 15 May 2015.