Twin Tree Management’s Westlake Corp WLK Stock Holding History

Twin Tree 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
2026 Q2	$241K	Sell	3,300 -5,000	-60%	-$488K	﹤0.01%	1161
2026 Q1	$970K	Buy	8,300 +2,800	+51%	+$272K	0.02%	741
2025 Q4	$407K	Buy	+5,500	New	+$391K	﹤0.01%	1166
2024 Q4	–	Sell	-25,400	Closed	-$3.82M	–	1937
2024 Q3	$3.82M	Hold	25,400	–	–	0.01%	980
2024 Q2	$3.68M	Buy	+25,400	New	+$3.9M	0.01%	840
2019 Q3	–	Sell	-5,300	Closed	-$368K	–	1544
2019 Q2	$368K	Buy	+5,300	New	+$353K	﹤0.01%	923
2016 Q2	–	Sell	-6,300	Closed	-$292K	–	1416
2016 Q1	$292K	Buy	6,300 +5,000	+385%	+$227K	0.01%	935
2015 Q4	$71K	Sell	1,300 -2,900	-69%	-$168K	﹤0.01%	1242
2015 Q3	$218K	Sell	4,200 -14,200	-77%	-$829K	0.01%	980
2015 Q2	$1.26M	Sell	18,400 -2,000	-10%	-$146K	0.03%	556
2015 Q1	$1.47M	Buy	+20,400	New	+$1.31M	0.04%	483
2014 Q4	–	Sell	-11,300	Closed	-$978K	–	1212
2014 Q3	$978K	Sell	11,300 -13,100	-54%	-$1.19M	0.03%	572
2014 Q2	$2.04M	Buy	+24,400	New	+$1.83M	0.05%	405

Other funds holding WLK

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

OAG

Orbis Allan Gray Hamilton, Bermuda $29.1B AUM 60.8% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

BIP

Brandes Investment Partners La Jolla, California $14.3B AUM 23.11% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Twin Tree Management's WLK Position: Q2 2026 in Review

Twin Tree Management sold out of Westlake Corp (WLK) in Q2 2026, closing a stake of 35,977 shares — an estimated $3.51M sold.

Twin Tree Management first reported a position in WLK in Q1 2015 and held it in 14 quarters. The position peaked at $4.2M in Q1 2026. 359 funds tracked by Wall St. Rank hold WLK as of Q2 2026.

Twin Tree Management reported no remaining Westlake Corp position as of Q2 2026 after selling out during the quarter.
Twin Tree Management sold 35,977 Westlake Corp shares in Q2 2026, an estimated $3.51M.
Twin Tree Management first reported a position in Westlake Corp in Q1 2015 and held it in 14 quarters.
Twin Tree Management's Westlake Corp position peaked at $4.2M in Q1 2026.
359 funds tracked by Wall St. Rank held Westlake Corp as of Q2 2026.

Based on Twin Tree Management's 13F filing for Q2 2026, filed 12 Aug 2026.