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Thompson Siegel & Walmsley’s Westlake Corp WLK Stock Holding History

Thompson Siegel & Walmsley’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
-2,976
Closed -$348K – 461
2026
Q1 		$348K Sell
2,976
-533,314
-99% -$51.7M 0.01% 386
2025
Q4 		$39.7M Buy
536,290
+94,950
+22% +$6.76M 0.67% 55
2025
Q3 		$34M Buy
+441,340
New +$36.8M 0.55% 62
2024
Q1 		– Sell
-627
Closed -$88K – 535
2023
Q4 		$88K Hold
627
– – ﹤0.01% 391
2023
Q3 		$78K Sell
627
-26
-4% -$3.34K ﹤0.01% 397
2023
Q2 		$78K Hold
653
– – ﹤0.01% 404
2023
Q1 		$76K Sell
653
-5,256
-89% -$607K ﹤0.01% 410
2022
Q4 		$606K Sell
5,909
-21,948
-79% -$2.21M 0.01% 280
2022
Q3 		$2.42M Buy
27,857
+1,119
+4% +$107K 0.04% 221
2022
Q2 		$2.62M Buy
+26,738
New +$3.27M 0.04% 220
2020
Q2 		– Sell
-12,798
Closed -$488K – 705
2020
Q1 		$488K Sell
12,798
-350,157
-96% -$19.7M 0.01% 264
2019
Q4 		$25.5M Sell
362,955
-260,514
-42% -$17.5M 0.39% 76
2019
Q3 		$40.9M Buy
+623,469
New +$40.1M 0.65% 59
2019
Q1 		– Sell
-60
Closed -$4K – 750
2018
Q4 		$4K Hold
60
– – ﹤0.01% 713
2018
Q3 		$5K Sell
60
-16
-21% -$1.56K ﹤0.01% 726
2018
Q2 		$8K Hold
76
– – ﹤0.01% 720
2018
Q1 		$8K Hold
76
– – ﹤0.01% 712
2017
Q4 		$8K Sell
76
-5
-6% -$463 ﹤0.01% 748
2017
Q3 		$7K Hold
81
– – ﹤0.01% 750
2017
Q2 		$5K Hold
81
– – ﹤0.01% 767
2017
Q1 		$5K Sell
81
-7,118
-99% -$450K ﹤0.01% 757
2016
Q4 		$403K Sell
7,199
-373,597
-98% -$20.4M 0.01% 372
2016
Q3 		$20.4M Buy
+380,796
New +$18.4M 0.32% 98

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

Thompson Siegel & Walmsley's WLK Position: Q2 2026 in Review

Thompson Siegel & Walmsley sold out of Westlake Corp (WLK) in Q2 2026, closing a stake of 2,976 shares — an estimated $348K sold.

Thompson Siegel & Walmsley first reported a position in WLK in Q3 2016 and held it in 23 quarters. The position peaked at $40.9M in Q3 2019. 358 funds tracked by Wall St. Rank hold WLK as of Q2 2026.

  • Thompson Siegel & Walmsley reported no remaining Westlake Corp position as of Q2 2026 after selling out during the quarter.
  • Thompson Siegel & Walmsley sold 2,976 Westlake Corp shares in Q2 2026, an estimated $348K.
  • Thompson Siegel & Walmsley first reported a position in Westlake Corp in Q3 2016 and held it in 23 quarters.
  • Thompson Siegel & Walmsley's Westlake Corp position peaked at $40.9M in Q3 2019.
  • 358 funds tracked by Wall St. Rank held Westlake Corp as of Q2 2026.

Based on Thompson Siegel & Walmsley's 13F filing for Q2 2026, filed 11 Aug 2026.