Security key
960413102
- Type / Class
- Equity / COM
- Total 13F shares
- 44,102,447
- Share change
- -1,736,801
- Total reported value
- $5,148,107,375
- Put/Call ratio
- 66%
- Price per share
- $116.82
- Number of holders
- 333
- Value change
- -$100,050,175
- Number of buys
- 202
- Number of sells
- 127
Report period
Q1 2026
Institutions
333
Top holders
10
WLK full security history
Previous quarter: Q4 2025
WESTLAKE CORP SEC filings
WESTLAKE CORP company facts
Broader feeds
Reporting periods
Holder history for CUSIP 960413102
Recent filing periods:
Top shareholders of WLK - WESTLAKE CORP - COM (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Dorothy C. Jenkins |
3/4/5
|
Director, 10%+ Owner |
—
class O/S missing
|
93,479,332
|
$12,071,920,935 | — | 12 Aug 2022 | |
| Orbis Allan Gray Ltd |
13F
|
Company |
—
class O/S missing
|
4,386,635
|
$324,347,792 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
—
class O/S missing
|
4,220,717
|
$312,079,814 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
—
class O/S missing
|
3,917,329
|
$289,647,306 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
—
class O/S missing
|
3,261,433
|
$241,150,363 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
—
class O/S missing
|
2,208,715
|
$163,313,000 | — | 31 Dec 2025 | |
| Capital World Investors |
13F
|
Company |
—
class O/S missing
|
2,171,324
|
$160,547,697 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
—
class O/S missing
|
1,885,678
|
$139,431,144 | — | 31 Dec 2025 | |
| BRANDES INVESTMENT PARTNERS, LP |
13F
|
Company |
—
class O/S missing
|
1,670,327
|
$123,504,691 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
—
class O/S missing
|
1,396,633
|
$103,267,044 | — | 31 Dec 2025 | |
| Holocene Advisors, LP |
13F
|
Company |
—
class O/S missing
|
1,220,622
|
$90,252,791 | — | 31 Dec 2025 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
—
class O/S missing
|
1,113,819
|
$82,355,777 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
—
class O/S missing
|
924,704
|
$68,372,614 | — | 31 Dec 2025 | |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. |
13F
|
Company |
—
class O/S missing
|
876,885
|
$64,837,978 | — | 31 Dec 2025 | |
| Albert Chao |
3/4/5
|
Executive Chairman, Director |
—
mixed-class rows
|
712,588
mixed-class rows
|
$61,857,724 | -$3,004,373 | 19 Feb 2026 | |
| MORGAN STANLEY |
13F
|
Company |
—
class O/S missing
|
759,623
|
$56,166,568 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
—
class O/S missing
|
753,953
|
$55,747,280 | — | 31 Dec 2025 | |
| JACOBS LEVY EQUITY MANAGEMENT, INC |
13F
|
Company |
—
class O/S missing
|
668,405
|
$49,421,866 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
—
class O/S missing
|
652,909
|
$48,276,092 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
—
class O/S missing
|
648,012
|
$47,914,008 | — | 31 Dec 2025 | |
| Woodline Partners LP |
13F
|
Company |
—
class O/S missing
|
628,159
|
$46,446,076 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
—
class O/S missing
|
594,922
|
$43,997,447 | — | 31 Dec 2025 | |
| THOMPSON SIEGEL & WALMSLEY LLC |
13F
|
Company |
—
class O/S missing
|
536,290
|
$39,653,000 | — | 31 Dec 2025 | |
| Allspring Global Investments Holdings, LLC |
13F
|
Company |
—
class O/S missing
|
506,756
|
$37,575,957 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
—
class O/S missing
|
486,281
|
$35,955,617 | — | 31 Dec 2025 | |
| ProShare Advisors LLC |
13F
|
Company |
—
class O/S missing
|
435,261
|
$32,183,198 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
—
class O/S missing
|
427,754
|
$31,628,131 | — | 31 Dec 2025 | |
| Erste Asset Management GmbH |
13F
|
Company |
—
class O/S missing
|
420,000
|
$31,054,800 | — | 31 Dec 2025 | |
| ANTIPODES PARTNERS Ltd |
13F
|
Company |
—
class O/S missing
|
416,520
|
$30,799,798 | — | 31 Dec 2025 | |
| Merewether Investment Management, LP |
13F
|
Company |
—
class O/S missing
|
388,100
|
$28,696,114 | — | 31 Dec 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
—
class O/S missing
|
348,953
|
$25,801,585 | — | 31 Dec 2025 | |
| JANUS HENDERSON GROUP PLC |
13F
|
Company |
—
class O/S missing
|
334,593
|
$24,740,851 | — | 31 Dec 2025 | |
| NEW YORK STATE COMMON RETIREMENT FUND |
13F
|
Company |
—
class O/S missing
|
309,626
|
$22,893,746 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
—
class O/S missing
|
297,248
|
$21,978,517 | — | 31 Dec 2025 | |
| Engineers Gate Manager LP |
13F
|
Company |
—
class O/S missing
|
289,255
|
$21,387,515 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
—
class O/S missing
|
268,634
|
$19,862,798 | — | 31 Dec 2025 | |
| Robert E. Robotti |
13F
|
Individual |
—
class O/S missing
|
256,244
|
$18,946,681 | — | 31 Dec 2025 | |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. |
13F
|
Company |
—
class O/S missing
|
235,919
|
$17,443,851 | — | 31 Dec 2025 | |
| Ceredex Value Advisors LLC |
13F
|
Company |
—
class O/S missing
|
235,618
|
$17,421,595 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
—
class O/S missing
|
228,843
|
$16,920,659 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
—
class O/S missing
|
213,157
|
$15,760,828 | — | 31 Dec 2025 | |
| DEPRINCE RACE & ZOLLO INC |
13F
|
Company |
—
class O/S missing
|
204,226
|
$15,100,470 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
—
class O/S missing
|
203,303
|
$15,032,224 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
—
class O/S missing
|
198,379
|
$14,668,143 | — | 31 Dec 2025 | |
| DIAMOND HILL CAPITAL MANAGEMENT INC |
13F
|
Company |
—
class O/S missing
|
190,180
|
$14,061,909 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
—
class O/S missing
|
184,435
|
$13,637,124 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
—
class O/S missing
|
181,328
|
$13,407,392 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
—
class O/S missing
|
174,318
|
$12,889,052 | — | 31 Dec 2025 | |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY |
13F
|
Company |
—
class O/S missing
|
165,315
|
$12,223,000 | — | 31 Dec 2025 | |
| Russell Investments Group, Ltd. |
13F
|
Company |
—
class O/S missing
|
158,321
|
$11,706,411 | — | 31 Dec 2025 |
Institutional Holders of WESTLAKE CORP - COM (WLK) as of Q1 2026
As of 31 Mar 2026,
WESTLAKE CORP - COM (WLK) was held by
333 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
44,102,447 shares.
The largest 10 holders included
Orbis Allan Gray Ltd, Capital World Investors, BlackRock, Inc., PRICE T ROWE ASSOCIATES INC /MD/, BRANDES INVESTMENT PARTNERS, LP, WELLINGTON MANAGEMENT GROUP LLP, VANGUARD PORTFOLIO MANAGEMENT LLC, DIMENSIONAL FUND ADVISORS LP, VANGUARD CAPITAL MANAGEMENT LLC, and GOLDMAN SACHS GROUP INC.
This page lists
333
institutional shareholders reporting positions in this security
for the Q1 2026 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
293
Q1 2026 holders
333
Holder diff
40
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 Value $ | Q1 2026 Value $ | Value Diff $ | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.
An asterisk sign (*) next to the price indicates that the price is likely invalid.