Latest Institutional Purchases of Westlake Corp (WLK)
This list provides information on the latest institutional transactions involving Westlake Corp (WLK) stock that were buys. The list includes the name of the institution, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the purchase has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Jan 29, 2026
Q4 2025
|
Vanguard Group Inc
Valley Forge, PA |
BUY
|
- |
478K+ 13.89% |
$29.9M - $39.3M
|
3.92M
$245M
|
|
|
Jan 29, 2026
Q4 2025
|
Ubs Group Ag
|
BUY
|
- |
87.5K+ 15.62% |
$5.48M - $7.21M
|
648K
$40.5M
|
|
|
Jan 09, 2026
Q4 2025
|
Sg Americas Securities, LLC
|
BUY
|
- |
30.1K+ 433.38% |
$1.88M - $2.48M
|
37K
$2.32M
|
|
|
Jan 30, 2026
Q4 2025
|
Amg National Trust Bank
|
BUY
|
- |
23.3KNew |
$1.46M - $1.92M
|
23.3K
$1.46M
|
|
|
Jan 23, 2026
Q4 2025
|
Deprince Race & Zollo Inc
Winter Park, FL |
BUY
|
- |
15.2K+ 8.05% |
$952K - $1.25M
|
204K
$12.8M
|
|
|
Jan 27, 2026
Q4 2025
|
Zurcher Kantonalbank (Zurich Cantonalbank)
Zurich, V8 |
BUY
|
- |
13.4KNew |
$836K - $1.1M
|
13.4K
$836K
|
|
|
Jan 28, 2026
Q4 2025
|
Arizona State Retirement System
|
BUY
|
- |
10.8KNew |
$675K - $889K
|
10.8K
$675K
|
|
|
Jan 28, 2026
Q4 2025
|
Klp Kapitalforvaltning As
Oslo, Q8 |
BUY
|
- |
8.2KNew |
$513K - $675K
|
8.2K
$513K
|
|
|
Jan 21, 2026
Q4 2025
|
Oak Thistle LLC
|
BUY
|
- |
7.17KNew |
$449K - $591K
|
7.17K
$449K
|
|
|
Jan 29, 2026
Q4 2025
|
Pictet Asset Management Holding Sa
Carouge, V8 |
BUY
|
- |
6.03KNew |
$377K - $496K
|
6.03K
$377K
|
|
|
Jan 09, 2026
Q4 2025
|
Assenagon Asset Management S.A.
|
BUY
|
- |
3.79KNew |
$237K - $312K
|
3.79K
$237K
|
|
|
Jan 14, 2026
Q4 2025
|
Wedge Capital Management L L P
|
BUY
|
- |
3.47K+ 8.8% |
$217K - $285K
|
42.8K
$2.68M
|
|
|
Jan 29, 2026
Q4 2025
|
Comerica Bank
|
BUY
|
- |
221+ 0.78% |
$13.8K - $18.2K
|
28.5K
$1.78M
|
|
|
Jan 16, 2026
Q4 2025
|
Ronald Blue Trust, Inc.
Brentwood, TN |
BUY
|
- |
171+ 1140.0% |
$10.7K - $14.1K
|
186
$11.6K
|
|
|
Jan 07, 2026
Q4 2025
|
Massmutual Trust CO Fsb
|
BUY
|
- |
43+ 18.61% |
$2.69K - $3.54K
|
274
$17.1K
|
|
|
Jan 20, 2026
Q4 2025
|
Unison Advisors LLC
|
BUY
|
- |
35+ 0.68% |
$2.19K - $2.88K
|
5.22K
$326K
|
|
|
Jan 29, 2026
Q4 2025
|
Torren Management, LLC
San Diego, CA |
BUY
|
- |
34New |
$2.13K - $2.8K
|
34
$2.13K
|
|
|
Jan 14, 2026
Q4 2025
|
Spire Wealth Management
|
BUY
|
- |
34+ 12.5% |
$2.13K - $2.8K
|
306
$19.1K
|
|
|
Jan 29, 2026
Q4 2025
|
Quent Capital, LLC
|
BUY
|
- |
29+ 14.29% |
$1.81K - $2.39K
|
232
$14.5K
|
|
|
Jan 02, 2026
Q4 2025
|
Global Wealth Strategies & Associates
Denver, CO |
BUY
|
- |
23New |
$1.44K - $1.89K
|
23
$1.44K
|
|
|
Jan 02, 2026
Q4 2025
|
Gamma Investing LLC
Foster City, CA |
BUY
|
- |
23+ 5.22% |
$1.44K - $1.89K
|
464
$29K
|
|
|
Jan 20, 2026
Q4 2025
|
Advisor Net Financial, Inc
|
BUY
|
- |
19New |
$1.19K - $1.57K
|
19
$1.19K
|
|
|
Jan 13, 2026
Q4 2025
|
Core Cap Advisors, LLC
Southfield, MI |
BUY
|
- |
19+ 380.0% |
$1.19K - $1.57K
|
24
$1.5K
|
|
|
Jan 13, 2026
Q4 2025
|
Jfs Wealth Advisors, LLC
|
BUY
|
- |
14New |
$876 - $1.15K
|
14
$876
|
|
|
Jan 08, 2026
Q4 2025
|
True Wealth Design, LLC
Akron, OH |
BUY
|
- |
14+ 350.0% |
$876 - $1.15K
|
18
$1.13K
|
|
|
Jan 30, 2026
Q4 2025
|
American Capital Advisory, LLC
Ketchum, ID |
BUY
|
- |
7New |
$438 - $577
|
7
$438
|
|
|
Jan 09, 2026
Q4 2025
|
Rialto Wealth Management, LLC
Syracuse, NY |
BUY
|
- |
7New |
$438 - $577
|
7
$438
|
|
|
Jan 28, 2026
Q4 2025
|
Rakuten Securities, Inc.
Tokyo, M0 |
BUY
|
- |
5+ 500.0% |
$313 - $412
|
6
$375
|
|
|
Jan 23, 2026
Q4 2025
|
Optima Capital LLC
Portland, OR |
BUY
|
- |
3New |
$188 - $247
|
3
$188
|
|
|
Jan 20, 2026
Q4 2025
|
Cromwell Holdings LLC
Jackson, WY |
BUY
|
- |
2+ 100.0% |
$125 - $165
|
4
$250
|
|
|
Jan 29, 2026
Q4 2025
|
Dunhill Financial, LLC
London, X0 |
BUY
|
- |
1New |
$62.6 - $82.4
|
1
$62.6
|
|
| Q3 2025 | |||||||
|
Nov 14, 2025
Q3 2025
|
Orbis Allan Gray LTD
Hamilton, D0 |
BUY
|
- |
3.91MNew |
$295M - $355M
|
3.91M
$245M
|
|
|
Nov 14, 2025
Q3 2025
|
Ken Griffin
Citadel Advisors LLC | Chicago, Il
|
BUY
|
- |
1.19M+ 9658.26% |
$89.7M - $108M
|
1.2M
$75.1M
|
|
|
Nov 14, 2025
Q3 2025
|
Holocene Advisors, LP
New York, NY |
BUY
|
- |
696K+ 440.09% |
$52.5M - $63.1M
|
854K
$53.4M
|
|
|
Nov 12, 2025
Q3 2025
|
Barclays PLC
London, X0 |
BUY
|
PUT |
471KNew |
$35.5M - $42.6M
|
471K
$29.4M
|
|
|
Nov 12, 2025
Q3 2025
|
Thompson Siegel & Walmsley LLC
|
BUY
|
- |
441KNew |
$33.3M - $40M
|
441K
$27.6M
|
|
|
Nov 14, 2025
Q3 2025
|
Balyasny Asset Management LLC
Chicago, IL |
BUY
|
- |
396K+ 495.82% |
$29.9M - $35.9M
|
476K
$29.8M
|
|
|
Nov 14, 2025
Q3 2025
|
Caisse De Depot Et Placement Du Quebec
Montreal, A8 |
BUY
|
- |
368KNew |
$27.8M - $33.4M
|
368K
$23M
|
|
|
Nov 14, 2025
Q3 2025
|
Morgan Stanley
New York, NY |
BUY
|
- |
353K+ 76.36% |
$26.6M - $32M
|
816K
$51M
|
|
|
Nov 14, 2025
Q3 2025
|
Merewether Investment Management, LP
Dallas, TX |
BUY
|
- |
268KNew |
$20.2M - $24.3M
|
268K
$16.8M
|
|
|
Nov 14, 2025
Q3 2025
|
Ubs Asset Management Americas Inc
Chicago, IL |
BUY
|
- |
265K+ 40.72% |
$20M - $24M
|
917K
$57.4M
|
|
|
Nov 14, 2025
Q3 2025
|
Janus Henderson Group PLC
London, X0 |
BUY
|
- |
152K+ 70.8% |
$11.4M - $13.7M
|
366K
$22.9M
|
|
|
Nov 14, 2025
Q3 2025
|
Price T Rowe Associates Inc
Baltimore, MD |
BUY
|
- |
150K+ 7.26% |
$11.3M - $13.5M
|
2.21M
$138M
|
|
|
Nov 14, 2025
Q3 2025
|
Nomura Holdings Inc
Tokyo, M0 |
BUY
|
PUT |
140KNew |
$10.6M - $12.7M
|
140K
$8.76M
|
|
|
Nov 12, 2025
Q3 2025
|
Impala Asset Management LLC
New Canaan, CT |
BUY
|
- |
115KNew |
$8.67M - $10.4M
|
115K
$7.19M
|
|
|
Nov 14, 2025
Q3 2025
|
Lloyd Harbor Capital Management, LLC
Cold Spring Harbor, NY |
BUY
|
- |
110KNew |
$8.3M - $9.97M
|
110K
$6.88M
|
|
|
Nov 14, 2025
Q3 2025
|
Brandes Investment Partners, LP
La Jolla, CA |
BUY
|
- |
91.8K+ 6.3% |
$6.93M - $8.32M
|
1.55M
$96.9M
|
|
|
Nov 14, 2025
Q3 2025
|
Zimmer Partners, LP
New York, NY |
BUY
|
- |
90KNew |
$6.79M - $8.15M
|
90K
$5.63M
|
|
|
Nov 12, 2025
Q3 2025
|
Erste Asset Management Gmb H
Vienna, C4 |
BUY
|
- |
88.5K+ 51.6% |
$6.68M - $8.02M
|
260K
$16.3M
|
|
|
Nov 14, 2025
Q3 2025
|
Steven Cohen
Point72 Asset Management, L.P. | Stamford, Ct
|
BUY
|
- |
84.9KNew |
$6.4M - $7.69M
|
84.9K
$5.31M
|
|