Citadel Advisors
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Citadel Advisors’s Westlake Corp WLK Stock Holding History

Citadel Advisors’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 		$8.07M Buy
69,100
+10,500
+18% +$1.02M ﹤0.01% 3568
2025
Q4 		$4.33M Buy
58,600
+3,100
+6% +$221K ﹤0.01% 4497
2025
Q3 		$4.28M Buy
55,500
+27,300
+97% +$2.27M ﹤0.01% 4644
2025
Q2 		$2.14M Buy
28,200
+16,800
+147% +$1.37M ﹤0.01% 5578
2025
Q1 		$1.14M Sell
11,400
-28,700
-72% -$3.18M ﹤0.01% 6679
2024
Q4 		$4.6M Sell
40,100
-21,700
-35% -$2.82M ﹤0.01% 4096
2024
Q3 		$9.29M Buy
61,800
+29,200
+90% +$4.2M ﹤0.01% 3016
2024
Q2 		$4.72M Sell
32,600
-22,200
-41% -$3.41M ﹤0.01% 3837
2024
Q1 		$8.37M Buy
54,800
+35,700
+187% +$5.03M ﹤0.01% 3163
2023
Q4 		$2.67M Sell
19,100
-19,100
-50% -$2.42M ﹤0.01% 4858
2023
Q3 		$4.76M Sell
38,200
-12,700
-25% -$1.63M ﹤0.01% 3725
2023
Q2 		$6.08M Buy
50,900
+23,900
+89% +$2.73M ﹤0.01% 3337
2023
Q1 		$3.13M Sell
27,000
-12,600
-32% -$1.45M ﹤0.01% 4563
2022
Q4 		$4.06M Sell
39,600
-80,200
-67% -$8.08M ﹤0.01% 4216
2022
Q3 		$10.4M Buy
119,800
+68,200
+132% +$6.54M ﹤0.01% 2700
2022
Q2 		$5.06M Buy
51,600
+22,400
+77% +$2.74M ﹤0.01% 3769
2022
Q1 		$3.6M Buy
29,200
+8,900
+44% +$970K ﹤0.01% 4818
2021
Q4 		$1.97M Sell
20,300
-2,900
-13% -$283K ﹤0.01% 6276
2021
Q3 		$2.11M Buy
23,200
+500
+2% +$42.8K ﹤0.01% 6212
2021
Q2 		$2.04M Sell
22,700
-3,900
-15% -$379K ﹤0.01% 6565
2021
Q1 		$2.36M Buy
26,600
+12,700
+91% +$1.1M ﹤0.01% 6013
2020
Q4 		$1.13M Sell
13,900
-25,200
-64% -$1.88M ﹤0.01% 6539
2020
Q3 		$2.47M Buy
39,100
+7,000
+22% +$413K ﹤0.01% 4330
2020
Q2 		$1.72M Sell
32,100
-8,300
-21% -$382K ﹤0.01% 4838
2020
Q1 		$1.54M Buy
40,400
+10,800
+36% +$607K ﹤0.01% 4569
2019
Q4 		$2.08M Sell
29,600
-17,600
-37% -$1.18M ﹤0.01% 4362
2019
Q3 		$3.09M Sell
47,200
-6,400
-12% -$412K ﹤0.01% 3802
2019
Q2 		$3.72M Buy
53,600
+20,900
+64% +$1.39M ﹤0.01% 3522
2019
Q1 		$2.22M Buy
32,700
+11,000
+51% +$797K ﹤0.01% 4293
2018
Q4 		$1.44M Sell
21,700
-21,900
-50% -$1.58M ﹤0.01% 4704
2018
Q3 		$3.62M Buy
43,600
+25,800
+145% +$2.52M ﹤0.01% 3443
2018
Q2 		$1.92M Sell
17,800
-10,500
-37% -$1.18M ﹤0.01% 4181
2018
Q1 		$3.15M Buy
28,300
+1,800
+7% +$200K ﹤0.01% 3083
2017
Q4 		$2.82M Sell
26,500
-7,100
-21% -$658K ﹤0.01% 3175
2017
Q3 		$2.79M Buy
33,600
+19,700
+142% +$1.45M ﹤0.01% 3010
2017
Q2 		$920K Hold
13,900
– – ﹤0.01% 4198
2017
Q1 		$918K Buy
13,900
+5,500
+65% +$348K ﹤0.01% 4131
2016
Q4 		$470K Sell
8,400
-19,100
-69% -$1.04M ﹤0.01% 5001
2016
Q3 		$1.47M Buy
27,500
+10,300
+60% +$497K ﹤0.01% 3337
2016
Q2 		$738K Buy
17,200
+800
+5% +$36.5K ﹤0.01% 3961
2016
Q1 		$759K Sell
16,400
-2,000
-11% -$90.8K ﹤0.01% 3820
2015
Q4 		$999K Sell
18,400
-4,200
-19% -$243K ﹤0.01% 3569
2015
Q3 		$1.17M Sell
22,600
-7,000
-24% -$409K ﹤0.01% 3610
2015
Q2 		$2.03M Sell
29,600
-12,200
-29% -$888K ﹤0.01% 3047
2015
Q1 		$3.01M Buy
41,800
+14,200
+51% +$910K ﹤0.01% 2587
2014
Q4 		$1.69M Buy
27,600
+11,100
+67% +$756K ﹤0.01% 3119
2014
Q3 		$1.43M Sell
16,500
-19,800
-55% -$1.79M ﹤0.01% 3264
2014
Q2 		$3.04M Buy
36,300
+20,000
+123% +$1.5M ﹤0.01% 2324
2014
Q1 		$1.08M Sell
16,300
-9,100
-36% -$578K ﹤0.01% 3327
2013
Q4 		$1.55M Sell
25,400
-13,600
-35% -$764K ﹤0.01% 2794
2013
Q3 		$2.04M Buy
39,000
+9,400
+32% +$479K ﹤0.01% 2396
2013
Q2 		$1.43M Buy
+29,600
New +$1.33M ﹤0.01% 2814

Other funds holding WLK

OAG
Orbis Allan Gray Hamilton, Bermuda $23.7B AUM 65.43% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
T. Rowe Price Associates
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
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
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Citadel Advisors's WLK Position: Q1 2026 in Review

Citadel Advisors increased its Westlake Corp (WLK) stake by 252% in Q1 2026, buying an estimated $49.7M and bringing the position to 715,586 shares worth $83.6M. The position accounts for 0.01% of the portfolio, ranked #938.

Citadel Advisors first reported a position in WLK in Q2 2013 and has held it in 52 quarters since. The position peaked at $205M in Q2 2015. 336 funds tracked by Wall St. Rank hold WLK as of Q1 2026.

  • Citadel Advisors held 715,586 shares of Westlake Corp worth $83.6M as of Q1 2026.
  • Citadel Advisors bought 512,283 Westlake Corp shares in Q1 2026, an estimated $49.7M.
  • Westlake Corp made up 0.01% of Citadel Advisors's portfolio in Q1 2026, its #938 holding.
  • Citadel Advisors first reported a position in Westlake Corp in Q2 2013 and has held it in 52 quarters since.
  • Citadel Advisors's Westlake Corp position peaked at $205M in Q2 2015.
  • 336 funds tracked by Wall St. Rank held Westlake Corp as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.