Westlake Corporation (WLK) is held by institutional investors who disclose positions via SEC 13F filings. View the full list of institutional holders on HoldingsIntel.

Are institutions buying or selling WLK?

HoldingsIntel tracks quarter-over-quarter changes in institutional positions for Westlake Corporation, showing new buyers, position increases, decreases, and exits with conviction-weighted sentiment.

What is the Smart Money Verdict on WLK?

The Smart Money Verdict combines four independent signals (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for Westlake Corporation.

Is institutional money flowing into WLK?

148 institutional investors hold Westlake Corporation (WLK). View detailed buyer/seller breakdown on HoldingsIntel.

What do hedge funds think about WLK?

Track institutional sentiment and conviction scores for Westlake Corporation (WLK) including Smart Money Verdict and position changes on HoldingsIntel.

Westlake Corporation

WLK·960413102·US·equity·Basic Materials - Specialty Chemicals

WLK (Westlake Corporation) is held by 148 institutional investors as of Q4 2025. Largest holders: Orbis Allan Gray Ltd ($324.3M), WELLINGTON MANAGEMENT GROUP LLP ($312.1M), VANGUARD GROUP INC ($289.6M). Net institutional sentiment: Mixed.

148

Holders

Avg rating(9 Elite)

$3B

Total Value

46% (174)

Fund Consensus

77 buying - 90 selling

Smart Money VerdictView all

42Weak MomentumSplit Signals

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See how WLK's score breaks down across 4 SEC sources

Held by 148 funds

9 elite

Who's Trading

InsiderBuesinger Robert F.Sell $461KMar 27, 2026

Insider

13F: Dec 31, 2025Insider & Congress: Updated regularly

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
Orbis Allan Gray Ltd	Increased	4.4M(+12.1%)	$324.3M	1.4%	+35.08%	55
WELLINGTON MANAGEMENT GROUP LLP	Increased	4.2M(+7239.1%)	$312.1M	0.1%	+37.41%	50
VANGUARD GROUP INC	Increased	3.9M(+13.9%)	$289.6M	0.0%	-24.76%	35
BlackRock, Inc.	Increased	3.3M(+2.4%)	$241.2M	0.0%	-6.12%	31
Capital World Investors	New	2.2M	$160.5M	0.0%	+37.45%	42
DIMENSIONAL FUND ADVISORS LP	Increased	1.9M(+45.0%)	$139.4M	0.0%	+12.58%	41
BRANDES INVESTMENT PARTNERS, LP	Increased	1.7M(+7.8%)	$123.5M	0.9%	+27.69%	46
STATE STREET CORP	Increased	1.4M(+7.8%)	$103.3M	0.0%	-14.82%	32
Holocene Advisors, LP	Increased	1.2M(+42.9%)	$90.3M	0.2%	+31.33%	48
VICTORY CAPITAL MANAGEMENT INC	Decreased	1.1M(-61.1%)	$82.4M	0.0%	+27.16%	0
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	Increased	924,704(+0.8%)	$68.4M	0.0%	+10.94%	30
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	Increased	876,885(+2.4%)	$64.8M	0.1%	-24.39%	30
MORGAN STANLEY	Decreased	759,623(-6.9%)	$56.2M	0.0%	+6.65%	0
GOLDMAN SACHS GROUP INC	Decreased	753,953(-28.3%)	$55.7M	0.0%	-5.21%	0
JACOBS LEVY EQUITY MANAGEMENT, INC	Decreased	668,405(-22.3%)	$49.4M	0.2%	-16.39%	0
Nuveen, LLC	Decreased	652,909(-4.9%)	$48.3M	0.0%	+10.55%	0
UBS Group AG	Increased	648,012(+15.6%)	$47.9M	0.0%	+3.23%	34
Woodline Partners LP	Increased	628,159(+224.2%)	$46.4M	0.2%	+37.38%	56
GEODE CAPITAL MANAGEMENT, LLC	Decreased	594,922(-8.9%)	$44M	0.0%	+30.45%	0
Allspring Global Investments Holdings, LLC	Decreased	506,756(-7.2%)	$37.6M	0.1%	-5.27%	0
D. E. Shaw & Co., Inc.	Increased	486,281(+203.9%)	$36M	0.0%	+21.67%	47
ProShare Advisors LLC	Increased	435,261(+3.0%)	$32.2M	0.1%	-2.99%	30
MILLENNIUM MANAGEMENT LLC	Increased	427,754(+302.3%)	$31.6M	0.0%	+25.83%	47
Erste Asset Management GmbH	Increased	420,000(+61.5%)	$31.1M	0.3%	+31.37%	50
VOLORIDGE INVESTMENT MANAGEMENT, LLC	Decreased	348,953(-11.5%)	$25.8M	0.1%	+7.45%	0
JANUS HENDERSON GROUP PLC	Decreased	334,593(-8.6%)	$24.7M	0.0%	+5.40%	0
NEW YORK STATE COMMON RETIREMENT FUND	Unchanged	309,626	$22.9M	0.0%	+37.45%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	297,248(+8.9%)	$22M	0.0%	+45.04%	31
Engineers Gate Manager LP	New	289,255	$21.4M	0.3%	+37.45%	47
NORTHERN TRUST CORP	Increased	268,634(+12.8%)	$19.9M	0.0%	+18.33%	32
VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V.	Increased	235,919(+20.3%)	$17.4M	0.1%	+37.14%	40
FMR LLC	Decreased	228,843(-27.2%)	$16.9M	0.0%	-4.78%	0
Invesco Ltd.	Increased	213,157(+58.3%)	$15.8M	0.0%	+6.40%	40
CITADEL ADVISORS LLC	Decreased	203,303(-83.1%)	$15M	0.0%	+34.29%	0
TWO SIGMA INVESTMENTS, LP	Increased	198,379(+92.7%)	$14.7M	0.0%	+8.16%	44
DIAMOND HILL CAPITAL MANAGEMENT INC	New	190,180	$14.1M	0.1%	+37.45%	39
BANK OF AMERICA CORP /DE/	Decreased	184,435(-11.7%)	$13.6M	0.0%	+11.78%	0
Bank of New York Mellon Corp	Decreased	174,318(-2.1%)	$12.9M	0.0%	+19.96%	0
Russell Investments Group, Ltd.	Decreased	158,321(-14.3%)	$11.7M	0.0%	-7.73%	0
ExodusPoint Capital Management, LP	New	154,391	$11.4M	0.1%	+37.45%	39
FIRST TRUST ADVISORS LP	Decreased	146,411(-11.2%)	$10.8M	0.0%	-1.61%	0
TWO SIGMA ADVISERS, LP	Increased	144,700(+96.3%)	$10.7M	0.0%	+10.41%	44
Cerity Partners LLC	Increased	127,095(+53.0%)	$9.4M	0.0%	-9.60%	39
Quantinno Capital Management LP	Increased	116,366(+78.4%)	$8.6M	0.0%	+22.37%	42
FEDERATED HERMES, INC.	Increased	107,730(+3456.6%)	$8M	0.0%	+36.75%	44
Alyeska Investment Group, L.P.	Decreased	103,041(-14.1%)	$7.6M	0.0%	+0.28%	0
BNP PARIBAS FINANCIAL MARKETS	Decreased	92,223(-51.7%)	$6.8M	0.0%	+28.46%	0
WELLS FARGO & COMPANY/MN	Decreased	91,879(-5.4%)	$6.8M	0.0%	+1.62%	0
NATIXIS	New	87,872	$6.5M	0.0%	+37.45%	38
RHUMBLINE ADVISERS	Decreased	85,432(-3.9%)	$6.3M	0.0%	+9.68%	0
ROYAL BANK OF CANADA	Decreased	85,270(-77.7%)	$6.3M	0.0%	+31.07%	0
Swiss National Bank	New	75,900	$5.6M	0.0%	+37.45%	37
Select Equity Group, L.P.	New	74,997	$5.5M	0.0%	+37.45%	37
LAZARD ASSET MANAGEMENT LLC	Increased	74,428(+2.5%)	$5.5M	0.0%	-25.28%	28
PRINCIPAL FINANCIAL GROUP INC	Decreased	71,719(-3.2%)	$5.3M	0.0%	+4.20%	0
ALLIANCEBERNSTEIN L.P.	Increased	68,448(+2.5%)	$5.1M	0.0%	+18.22%	28
JPMORGAN CHASE & CO	Decreased	67,320(-57.3%)	$5M	0.0%	+2.03%	0
BARCLAYS PLC	Decreased	66,613(-34.5%)	$4.9M	0.0%	-5.59%	0
Jain Global LLC	Increased	62,043(+399.7%)	$4.6M	0.0%	+36.91%	43
Legal & General Group Plc	Increased	57,251(+56.3%)	$4.2M	0.0%	+25.03%	38
Corient Private Wealth LLC	Increased	50,715(+53.6%)	$3.7M	0.0%	+27.42%	37
AMERIPRISE FINANCIAL INC	Decreased	49,117(-41.8%)	$3.6M	0.0%	+32.61%	0
Walleye Capital LLC	Decreased	47,657(-67.9%)	$3.5M	0.0%	+24.64%	0
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	Decreased	46,760(-0.1%)	$3.5M	0.0%	-10.99%	0
Retirement Systems of Alabama	Decreased	40,027(-0.7%)	$3M	0.0%	+4.40%	0
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	Increased	36,098(+1628.0%)	$2.7M	0.0%	+38.30%	42
MANUFACTURERS LIFE INSURANCE COMPANY, THE	Increased	33,451(+19.1%)	$2.5M	0.0%	+11.27%	31
Hudson Bay Capital Management LP	Increased	30,443(+770.8%)	$2.3M	0.0%	+37.14%	42
COMERICA BANK	Increased	28,483(+0.8%)	$2.1M	0.0%	-3.62%	26
SEI INVESTMENTS CO	Increased	28,442(+92.6%)	$2.1M	0.0%	+28.89%	41
ENVESTNET ASSET MANAGEMENT INC	Increased	27,870(+1.5%)	$2.1M	0.0%	-1.48%	26
CITIGROUP INC	Decreased	27,337(-76.7%)	$2M	0.0%	+22.43%	0
BANK OF MONTREAL /CAN/	Decreased	26,923(-40.4%)	$2M	0.0%	-0.79%	0
Verition Fund Management LLC	Decreased	26,078(-4.0%)	$1.9M	0.0%	-13.76%	0
STATE OF WISCONSIN INVESTMENT BOARD	New	25,711	$1.9M	0.0%	+37.45%	36
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM	Unchanged	24,115	$1.8M	0.0%	+38.17%	0
SUSQUEHANNA INTERNATIONAL GROUP, LLP	Increased	23,801(+169.1%)	$1.8M	0.0%	+36.75%	42
AQR CAPITAL MANAGEMENT LLC	Decreased	20,535(-60.9%)	$1.5M	0.0%	+34.75%	0
MACKENZIE FINANCIAL CORP	Decreased	19,833(-21.7%)	$1.5M	0.0%	+34.80%	0
Alberta Investment Management Corp	New	19,700	$1.5M	0.0%	+37.45%	35
STIFEL FINANCIAL CORP	Increased	18,921(+12.9%)	$1.4M	0.0%	+16.82%	29
AMERICAN CENTURY COMPANIES INC	Increased	18,301(+1.1%)	$1.4M	0.0%	-8.65%	26
MetLife Investment Management, LLC	Decreased	16,295(-4.9%)	$1.2M	0.0%	+3.32%	0
State of Tennessee, Department of Treasury	Increased	12,946(+158.3%)	$1M	0.0%	+2.84%	40
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC	Decreased	13,880(-9.9%)	$1M	0.0%	+6.02%	0
Zurcher Kantonalbank (Zurich Cantonalbank)	New	13,367	$988,356	0.0%	+37.45%	35
LPL Financial LLC	Increased	12,648(+2.3%)	$935,173	0.0%	+1.09%	25
YOUSIF CAPITAL MANAGEMENT, LLC	Decreased	11,055(-1.4%)	$927,736	0.0%	+6.02%	0
Arizona State Retirement System	New	10,794	$798,108	0.0%	+37.45%	34
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	Decreased	10,056(-3.7%)	$743,541	0.0%	+50.83%	0
Mitsubishi UFJ Asset Management Co., Ltd.	Increased	9,980(+57.1%)	$740,017	0.0%	+4.29%	35
Vanguard Personalized Indexing Management, LLC	Increased	9,755(+4.4%)	$721,285	0.0%	+2.50%	26
Brevan Howard Capital Management LP	Increased	9,468(+27.8%)	$700,064	0.0%	+20.56%	31
Gotham Asset Management, LLC	Decreased	9,199(-58.3%)	$680,174	0.0%	+22.35%	0
Universal- Beteiligungs- und Servicegesellschaft mbH	Decreased	9,182(-3.1%)	$678,917	0.0%	+26.11%	0
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	Decreased	8,346(-2.5%)	$617,103	0.0%	+2.10%	0
KLP KAPITALFORVALTNING AS	New	8,200	$606,308	0.0%	+37.45%	34
CANADA PENSION PLAN INVESTMENT BOARD	Increased	7,931(+52.2%)	$586,418	0.0%	-8.06%	34
STATE OF MICHIGAN RETIREMENT SYSTEM	Unchanged	7,900	$584,126	0.0%	+3.41%	0
Creative Planning	Decreased	7,685(-42.3%)	$568,229	0.0%	+0.01%	0
Pictet Asset Management Holding SA	New	6,025	$445,489	0.0%	+37.45%	33
Schonfeld Strategic Advisors LLC	Decreased	6,012(-86.9%)	$444,527	0.0%	+21.20%	0
Police & Firemen's Retirement System of New Jersey	Unchanged	5,684	$420,275	0.0%	-2.21%	0
Pathstone Holdings, LLC	Decreased	4,649(-48.4%)	$343,741	0.0%	-18.22%	0
GUGGENHEIM CAPITAL LLC	New	4,174	$308,626	0.0%	+37.45%	32
CI INVESTMENTS INC.	Decreased	4,128(-1.3%)	$305,224	0.0%	+35.29%	0
Pacer Advisors, Inc.	Decreased	3,988(-33.6%)	$294,873	0.0%	+34.80%	0
CIBC Asset Management Inc	Decreased	3,977(-9.2%)	$294,059	0.0%	-24.59%	0
GAMCO INVESTORS, INC. ET AL	Decreased	3,941(-4.8%)	$291,398	0.0%	+37.24%	0
MERCER GLOBAL ADVISORS INC /ADV	Decreased	3,923(-7.5%)	$290,068	0.0%	+18.54%	0
Assenagon Asset Management S.A.	New	3,790	$280,233	0.0%	+37.45%	32
Sanctuary Advisors, LLC	Decreased	3,441(-3.0%)	$254,428	0.0%	+34.80%	0
Cetera Investment Advisers	Decreased	3,154(-32.6%)	$233,225	0.0%	-12.76%	0
RAYMOND JAMES FINANCIAL INC	Decreased	3,121(-34.4%)	$230,769	0.0%	-6.83%	0
CAPSTONE INVESTMENT ADVISORS, LLC	New	3,119	$230,619	0.0%	+37.45%	32
XPONANCE LLC	Decreased	3,101(-17.1%)	$229,288	0.0%	-8.25%	0
Empowered Funds, LLC	New	2,823	$208,733	0.0%	+37.45%	32
Federation des caisses Desjardins du Quebec	Increased	2,559(+17.0%)	$189,212	0.0%	+30.06%	26
PRICE T ROWE ASSOCIATES INC /MD/	Increased	2.2M(+0.0%)	$163,313	0.0%	+36.49%	22
US BANCORP \DE\	Decreased	2,010(-17.4%)	$148,619	0.0%	+53.97%	0
SIMPLEX TRADING, LLC	New	1,981	$146,475	0.0%	+37.45%	31
Allworth Financial LP	Decreased	1,438(-0.3%)	$106,326	0.0%	+10.92%	0
PNC FINANCIAL SERVICES GROUP, INC.	Decreased	1,335(-13.5%)	$98,711	0.0%	+16.16%	0
MAI Capital Management	Increased	1,316(+0.5%)	$97,306	0.0%	-5.85%	22
Kestra Advisory Services, LLC	New	1,138	$84,178	0.0%	+37.45%	30
DEUTSCHE BANK AG\	New	1,084	$80,151	0.0%	+37.45%	33
Rockefeller Capital Management L.P.	Increased	955(+219.4%)	$70,634	0.0%	+36.61%	34
NOMURA ASSET MANAGEMENT CO LTD	Unchanged	896	$66,250	0.0%	+4.33%	0
STRS OHIO	Increased	800(+0.1%)	$59,152	0.0%	+37.25%	21
NewEdge Advisors, LLC	Unchanged	745	$55,085	0.0%	-4.66%	0
FIFTH THIRD BANCORP	Increased	562(+71.3%)	$41,554	0.0%	+11.52%	30
JONES FINANCIAL COMPANIES LLLP	Decreased	306(-24.6%)	$22,648	0.0%	-2.60%	0
Farther Finance Advisors, LLC	Decreased	300(-40.4%)	$22,182	0.0%	+31.87%	0
OSAIC HOLDINGS, INC.	Decreased	280(-91.4%)	$20,701	0.0%	+12.76%	0
NATIONAL BANK OF CANADA /FI/	Decreased	275(-4.2%)	$20,331	0.0%	-1.56%	0
CIBC Private Wealth Group LLC	Decreased	191(-72.2%)	$14,123	0.0%	+34.80%	0
CULLEN/FROST BANKERS, INC.	Increased	164(+23.3%)	$12,130	0.0%	+35.29%	21
LOS ANGELES CAPITAL MANAGEMENT LLC	New	157	$10,722	0.0%	+37.45%	26
HUNTINGTON NATIONAL BANK	Decreased	119(-66.0%)	$8,799	0.0%	+37.22%	0
First Eagle Investment Management, LLC	New	53	$3,919	0.0%	+37.45%	22
NISA INVESTMENT ADVISORS, LLC	Decreased	50(-84.9%)	$3,697	0.0%	-9.76%	0
TD Waterhouse Canada Inc.	Decreased	40(-20.0%)	$2,958	0.0%	+36.75%	0
ASSETMARK, INC	Decreased	39(-58.5%)	$2,884	0.0%	+12.64%	0
Steward Partners Investment Advisory, LLC	Decreased	24(-60.7%)	$1,775	0.0%	+0.54%	0
BROWN BROTHERS HARRIMAN & CO	New	21	$1,553	0.0%	+37.45%	17
PICTON MAHONEY ASSET MANAGEMENT	Unchanged	8	$592	0.0%	-29.30%	0
BNP Paribas Asset Management Holding S.A.	New	338	$25	0.0%	+37.45%	17
Wealthspire Advisors, LLC	Exited	0(-100.0%)	$2,851	0.0%	-1.93%	0
Point72 Asset Management, L.P.	Exited	0(-100.0%)	$6.5M	0.0%	-1.93%	0
1832 Asset Management L.P.	Exited	0(-100.0%)	$10.7M	0.0%	-40.19%	0
Walleye Trading LLC	Exited	0(-100.0%)	$283,041	0.0%	-1.93%	0
PRUDENTIAL FINANCIAL INC	Exited	0(-100.0%)	$283,427	0.0%	-35.98%	0
Squarepoint Ops LLC	Exited	0(-100.0%)	$7.7M	0.0%	-32.27%	0
Kovitz Investment Group Partners, LLC	Exited	0(-100.0%)	$316,332	0.0%	-32.22%	0
BALYASNY ASSET MANAGEMENT L.P.	Exited	0(-100.0%)	$36.7M	0.0%	-9.55%	0
EXCHANGE TRADED CONCEPTS, LLC	Exited	0(-100.0%)	$943,291	0.0%	-1.93%	0
VOYA INVESTMENT MANAGEMENT LLC	Exited	0(-100.0%)	$213,610	0.0%	-3.48%	0
MARSHALL WACE, LLP	Exited	0(-100.0%)	$4.4M	0.0%	-1.67%	0
LMR Partners LLP	Exited	0(-100.0%)	$297,529	0.0%	-0.15%	0
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	Exited	0(-100.0%)	$23.1M	0.0%	-0.21%	0
Optiver Holding B.V.	Exited	0(-100.0%)	$6,396	0.0%	-0.15%	0
CAISSE DE DEPOT ET PLACEMENT DU QUEBEC	Exited	0(-100.0%)	$28.4M	0.0%	-1.93%	0
HRT FINANCIAL LP	Exited	0(-100.0%)	$3,669	0.0%	-1.93%	0
JANE STREET GROUP, LLC	Exited	0(-100.0%)	$1M	0.0%	-25.67%	0
RENAISSANCE TECHNOLOGIES LLC	Exited	0(-100.0%)	$2M	0.0%	-40.74%	0
Amundi	Exited	0(-100.0%)	$2.2M	0.0%	-26.07%	0
APG Asset Management N.V.	Exited	0(-100.0%)	$1.4M	0.0%	-30.42%	0
Magnetar Financial LLC	Exited	0(-100.0%)	$256,532	0.0%	-22.80%	0
NOMURA HOLDINGS INC	Exited	0(-100.0%)	$5.3M	0.0%	-1.93%	0
&PARTNERS	Exited	0(-100.0%)	$233,317	0.0%	-1.93%	0
TUDOR INVESTMENT CORP ET AL	Exited	0(-100.0%)	$4.8M	0.0%	-1.93%	0
SCHRODER INVESTMENT MANAGEMENT GROUP	Exited	0(-100.0%)	$20.1M	0.0%	-35.60%	0
Twin Tree Management, LP	Exited	0(-100.0%)	$1.2M	0.0%	-0.15%	0

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