Wellington Management Group
WLK icon

Wellington Management Group’s Westlake Corp WLK Stock Holding History

Wellington Management Group’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 		$210M Sell
1,793,517
-2,427,200
-58% -$235M 0.04% 371
2025
Q4 		$312M Buy
4,220,717
+4,163,207
+7,239% +$296M 0.05% 288
2025
Q3 		$4.43M Buy
+57,510
New +$4.79M ﹤0.01% 1469
2025
Q2 		– Sell
-4,674
Closed -$468K – 2063
2025
Q1 		$468K Sell
4,674
-38,260
-89% -$4.24M ﹤0.01% 1832
2024
Q4 		$4.92M Buy
42,934
+2,281
+6% +$297K ﹤0.01% 1352
2024
Q3 		$6.11M Sell
40,653
-7,871
-16% -$1.13M ﹤0.01% 1286
2024
Q2 		$7.03M Buy
48,524
+545
+1% +$83.7K ﹤0.01% 1245
2024
Q1 		$7.33M Buy
47,979
+1,905
+4% +$268K ﹤0.01% 1229
2023
Q4 		$6.45M Sell
46,074
-4,120
-8% -$523K ﹤0.01% 1234
2023
Q3 		$6.26M Buy
50,194
+13,583
+37% +$1.74M ﹤0.01% 1222
2023
Q2 		$4.37M Buy
36,611
+7,855
+27% +$899K ﹤0.01% 1308
2023
Q1 		$3.34M Sell
28,756
-17,591
-38% -$2.03M ﹤0.01% 1383
2022
Q4 		$4.75M Sell
46,347
-1,646
-3% -$166K ﹤0.01% 1285
2022
Q3 		$4.17M Sell
47,993
-111,849
-70% -$10.7M ﹤0.01% 1333
2022
Q2 		$15.7M Sell
159,842
-22,403
-12% -$2.74M ﹤0.01% 1007
2022
Q1 		$22.5M Sell
182,245
-3,836
-2% -$418K ﹤0.01% 990
2021
Q4 		$18.1M Buy
186,081
+153,250
+467% +$14.9M ﹤0.01% 1106
2021
Q3 		$2.99M Buy
32,831
+2,497
+8% +$214K ﹤0.01% 1627
2021
Q2 		$2.73M Sell
30,334
-1,020
-3% -$99.1K ﹤0.01% 1622
2021
Q1 		$2.78M Buy
31,354
+5,898
+23% +$512K ﹤0.01% 1557
2020
Q4 		$2.08M Sell
25,456
-6,894
-21% -$515K ﹤0.01% 1489
2020
Q3 		$2.04M Sell
32,350
-506
-2% -$29.9K ﹤0.01% 1406
2020
Q2 		$1.76M Sell
32,856
-7,657
-19% -$352K ﹤0.01% 1370
2020
Q1 		$1.55M Sell
40,513
-21,457
-35% -$1.21M ﹤0.01% 1413
2019
Q4 		$4.35M Buy
61,970
+39,717
+178% +$2.67M ﹤0.01% 1363
2019
Q3 		$1.46M Buy
22,253
+14,055
+171% +$905K ﹤0.01% 1656
2019
Q2 		$570K Sell
8,198
-62,310
-88% -$4.15M ﹤0.01% 1879
2019
Q1 		$4.79M Buy
70,508
+51,261
+266% +$3.71M ﹤0.01% 1389
2018
Q4 		$1.27M Sell
19,247
-169,531
-90% -$12.3M ﹤0.01% 1749
2018
Q3 		$15.7M Sell
188,778
-247,943
-57% -$24.2M ﹤0.01% 1154
2018
Q2 		$47M Sell
436,721
-190,939
-30% -$21.4M 0.01% 814
2018
Q1 		$69.8M Sell
627,660
-388,757
-38% -$43.2M 0.02% 685
2017
Q4 		$108M Sell
1,016,417
-82,540
-8% -$7.65M 0.02% 546
2017
Q3 		$91.3M Sell
1,098,957
-343,828
-24% -$25.3M 0.02% 570
2017
Q2 		$95.5M Buy
1,442,785
+134,404
+10% +$8.53M 0.02% 533
2017
Q1 		$86.4M Buy
1,308,381
+141,114
+12% +$8.93M 0.02% 562
2016
Q4 		$65.4M Buy
1,167,267
+1,133,419
+3,349% +$61.9M 0.02% 637
2016
Q3 		$1.81M Sell
33,848
-23,802
-41% -$1.15M ﹤0.01% 1671
2016
Q2 		$2.47M Buy
57,650
+17,755
+45% +$811K ﹤0.01% 1549
2016
Q1 		$1.85M Buy
39,895
+23,847
+149% +$1.08M ﹤0.01% 1626
2015
Q4 		$872K Buy
16,048
+5,041
+46% +$292K ﹤0.01% 1851
2015
Q3 		$572K Buy
11,007
+7,211
+190% +$421K ﹤0.01% 1940
2015
Q2 		$261K Buy
3,796
+91
+2% +$6.62K ﹤0.01% 2070
2015
Q1 		$267K Buy
+3,705
New +$237K ﹤0.01% 2099
2014
Q1 		– Sell
-19,080
Closed -$1.16M – 2237
2013
Q4 		$1.16M Sell
19,080
-3,754
-16% -$211K ﹤0.01% 1816
2013
Q3 		$1.19M Sell
22,834
-221,010
-91% -$11.3M ﹤0.01% 1759
2013
Q2 		$11.8M Buy
+243,844
New +$11M ﹤0.01% 1129

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
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
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Wellington Management Group's WLK Position: Q1 2026 in Review

Wellington Management Group reduced its Westlake Corp (WLK) stake by 58% in Q1 2026, selling an estimated $235M and leaving 1,793,517 shares worth $210M. The position accounts for 0.04% of the portfolio, ranked #371.

Wellington Management Group first reported a position in WLK in Q2 2013 and has held it in 47 quarters since. The position peaked at $312M in Q4 2025. 336 funds tracked by Wall St. Rank hold WLK as of Q1 2026.

  • Wellington Management Group held 1,793,517 shares of Westlake Corp worth $210M as of Q1 2026.
  • Wellington Management Group sold 2,427,200 Westlake Corp shares in Q1 2026, an estimated $235M.
  • Westlake Corp made up 0.04% of Wellington Management Group's portfolio in Q1 2026, its #371 holding.
  • Wellington Management Group first reported a position in Westlake Corp in Q2 2013 and has held it in 47 quarters since.
  • Wellington Management Group's Westlake Corp position peaked at $312M in Q4 2025.
  • 336 funds tracked by Wall St. Rank held Westlake Corp as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.