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 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

OAG

Orbis Allan Gray Hamilton, Bermuda $23.7B AUM 65.43% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

BIP

Brandes Investment Partners La Jolla, California $14.1B AUM 25.52% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Twin Tree Management's WLK Position: Q1 2026 in Review

Twin Tree Management opened a new position in Westlake Corp (WLK) in Q1 2026: 35,977 shares worth $4.2M. The stake represents 0.09% of the portfolio and ranks #256 among its holdings. This is a return to the name: Twin Tree Management previously reported a position in WLK as recently as Q3 2025.

Twin Tree Management first reported a position in WLK in Q1 2015 and has held it in 14 quarters since. 336 funds tracked by Wall St. Rank hold WLK as of Q1 2026.

Twin Tree Management held 35,977 shares of Westlake Corp worth $4.2M as of Q1 2026.
Westlake Corp was a new Twin Tree Management position in Q1 2026.
Westlake Corp made up 0.09% of Twin Tree Management's portfolio in Q1 2026, its #256 holding.
Twin Tree Management first reported a position in Westlake Corp in Q1 2015 and has held it in 14 quarters since.
336 funds tracked by Wall St. Rank held Westlake Corp as of Q1 2026.

Based on Twin Tree Management's 13F filing for Q1 2026, filed 14 May 2026.