Twin Tree Management
WLK icon

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 		– Sell
-16,800
Closed -$1.96M – 1732
2026
Q1 		$1.96M Sell
16,800
-22,200
-57% -$2.15M 0.04% 490
2025
Q4 		$2.88M Buy
39,000
+10,400
+36% +$740K 0.03% 700
2025
Q3 		$2.2M Buy
28,600
+18,900
+195% +$1.57M 0.01% 1015
2025
Q2 		$737K Buy
+9,700
New +$794K ﹤0.01% 1403
2020
Q4 		– Sell
-5,500
Closed -$348K – 1524
2020
Q3 		$348K Buy
+5,500
New +$325K ﹤0.01% 999
2020
Q1 		– Sell
-46,300
Closed -$3.25M – 1652
2019
Q4 		$3.25M Sell
46,300
-82,200
-64% -$5.52M 0.01% 605
2019
Q3 		$8.42M Sell
128,500
-47,500
-27% -$3.06M 0.03% 363
2019
Q2 		$12.2M Buy
176,000
+162,900
+1,244% +$10.8M 0.06% 259
2019
Q1 		$889K Buy
+13,100
New +$949K ﹤0.01% 854
2015
Q1 		– Sell
-5,300
Closed -$324K – 1331
2014
Q4 		$324K Sell
5,300
-5,300
-50% -$361K 0.01% 842
2014
Q3 		$918K Sell
10,600
-38,200
-78% -$3.46M 0.02% 583
2014
Q2 		$4.09M Buy
+48,800
New +$3.65M 0.09% 234

Other funds holding WLK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
T. Rowe Price Associates
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
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Portfolio Management
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
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
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.