Westlake (WLK) Institutional Ownership

$87.14 +0.31 (+0.36%)

As of 12:04 PM Eastern

Current Institutional Ownership Percentage: 28.40%
Number of Institutional Buyers (last 12 months): 194
Total Institutional Inflows (last 12 months): $1.52B

Number of Institutional Sellers (last 12 months): 122
Total Institutional Outflows (last 12 months): $743.67M

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WLK Institutional Buying and Selling by Quarter

Westlake Major Shareholders & Ownership History

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Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
5/19/2026	Bank of America Corp DE	236,986	$27.69M	0.0%	+28.5%	0.185%
5/19/2026	Edgestream Partners L.P.	17,681	$2.07M	0.1%	+149.2%	0.014%
5/19/2026	Janus Henderson Group PLC	269,783	$31.52M	0.0%	-19.4%	0.211%
5/18/2026	Amundi	1,997	$233K	0.0%	N/A	0.002%
5/18/2026	California State Teachers Retirement System	44,459	$5.19M	0.0%	+23.2%	0.035%
5/18/2026	Royal Bank of Canada	103,951	$12.14M	0.0%	+21.9%	0.081%
5/18/2026	Recurrent Investment Advisors LLC	112,790	$13.18M	0.8%	+49.1%	0.088%
5/18/2026	Rokos Capital Management LLP	60,800	$7.10M	0.1%	N/A	0.047%
5/18/2026	Empowered Funds LLC	2,162	$253K	0.0%	-23.4%	0.002%
5/16/2026	The Manufacturers Life Insurance Company	33,295	$3.89M	0.0%	-0.5%	0.026%
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5/16/2026	Quantinno Capital Management LP	121,444	$14.19M	0.0%	+4.4%	0.095%
5/16/2026	SummitTX Capital L.P.	14,335	$1.68M	0.1%	N/A	0.011%
5/14/2026	Gamco Investors INC. ET AL	3,491	$408K	0.0%	-11.4%	0.003%
5/14/2026	Public Employees Retirement System of Ohio	9,724	$1.14M	0.0%	-3.3%	0.008%
5/14/2026	Sei Investments Co.	12,769	$1.49M	0.0%	-55.1%	0.010%
5/13/2026	Cetera Investment Advisers	3,921	$458K	0.0%	+24.3%	0.003%
5/13/2026	First Trust Advisors LP	102,299	$11.95M	0.0%	-30.1%	0.080%
5/8/2026	PNC Financial Services Group Inc.	1,522	$178K	0.0%	+14.0%	0.001%
5/7/2026	Dimensional Fund Advisors LP	1,466,020	$171.26M	0.0%	-22.3%	1.145%
5/7/2026	Parallel Advisors LLC	830	$97K	0.0%	+133.8%	0.001%
5/7/2026	KBC Group NV	19,432	$2.27M	0.0%	-12.6%	0.015%
5/6/2026	California Public Employees Retirement System	25,000	$2.92M	0.0%	-46.5%	0.020%
5/6/2026	Allspring Global Investments Holdings LLC	285,434	$33.28M	0.1%	-43.7%	0.223%
5/5/2026	Bank of New York Mellon Corp	181,070	$21.15M	0.0%	+3.9%	0.141%
5/5/2026	Sanctuary Advisors LLC	3,272	$382K	0.0%	-4.9%	0.003%
5/5/2026	Maryland State Retirement & Pension System	1,915	$224K	0.0%	N/A	0.001%
5/4/2026	AMG National Trust Bank	23,041	$2.69M	0.1%	-1.2%	0.018%
5/4/2026	Archer Investment Corp	2,493	$291K	0.1%	N/A	0.002%
5/4/2026	State of Michigan Retirement System	8,000	$935K	0.0%	+1.3%	0.006%
5/4/2026	Principal Financial Group Inc.	74,481	$8.70M	0.0%	+3.9%	0.058%
5/4/2026	Teachers Retirement System of The State of Kentucky	178,160	$20.81M	0.2%	+7.8%	0.139%
5/1/2026	Fifth Third Bancorp	16,045	$1.87M	0.0%	+2,755.0%	0.013%
4/30/2026	Oregon Public Employees Retirement Fund	6,868	$802K	0.0%	+3.0%	0.005%
4/27/2026	New York State Teachers Retirement System	4,143	$484K	0.0%	-20.7%	0.003%
4/24/2026	Deprince Race & Zollo Inc.	203,366	$23.76M	0.4%	-0.4%	0.159%
4/23/2026	Inspire Investing LLC	2,836	$331K	0.0%	-35.6%	0.002%
4/22/2026	Sterling Capital Management LLC	1,122	$131K	0.0%	-43.2%	0.001%
4/21/2026	Louisiana State Employees Retirement System	9,700	$1.13M	0.0%	N/A	0.008%
4/16/2026	SG Americas Securities LLC	24,576	$2.87M	0.0%	-33.6%	0.019%
4/16/2026	BI Asset Management Fondsmaeglerselskab A S	42,043	$4.91M	0.1%	+497.5%	0.033%
SpaceX eyes a 1.75 trillion valuation - here's what to know (Ad) Elon Musk's team has quietly filed confidential paperwork with the SEC for what Bloomberg estimates could be a $1.75 trillion IPO - larger than Saudi Aramco and any tech offering in history. CNBC calls it 'the big market event of 2026.' According to former tech executive and angel investor Jeff Brown, there's a way to claim a stake before the public filing drops, starting with as little as $500. See how to get positioned in SpaceX before the announcement goes public
3/17/2026	Rockefeller Capital Management L.P.	955	$71K	0.0%	+219.4%	0.001%
3/9/2026	Corient Private Wealth LLC	50,715	$3.75M	0.0%	+53.6%	0.040%
2/24/2026	Pacer Advisors Inc.	3,988	$295K	0.0%	-33.6%	0.003%
2/19/2026	Invesco Ltd.	213,157	$15.76M	0.0%	+58.2%	0.166%
2/19/2026	Corient Private Wealth LLC	50,715	$3.75M	0.0%	+53.6%	0.040%
2/19/2026	Alberta Investment Management Corp	19,700	$1.46M	0.0%	N/A	0.015%
2/18/2026	Alpine Woods Capital Investors LLC	8,989	$665K	0.2%	N/A	0.007%
2/18/2026	Mercer Global Advisors Inc. ADV	3,923	$290K	0.0%	-7.5%	0.003%
2/18/2026	State of Tennessee Department of Treasury	12,946	$1.03M	0.0%	+158.2%	0.010%
2/18/2026	Mackenzie Financial Corp	19,833	$1.48M	0.0%	-21.7%	0.015%
2/18/2026	Empowered Funds LLC	2,823	$209K	0.0%	N/A	0.002%
2/18/2026	VARCOV Co.	35,597	$2.63M	1.0%	N/A	0.028%
2/18/2026	Voloridge Investment Management LLC	348,953	$25.80M	0.1%	-11.5%	0.272%
2/18/2026	Virtus Investment Advisers LLC	2,186	$162K	0.0%	N/A	0.002%
2/18/2026	Wellington Management Group LLP	4,220,717	$312.08M	0.1%	+7,239.1%	3.290%
2/18/2026	Polymer Capital Management US LLC	6,500	$481K	0.1%	-59.9%	0.005%
2/18/2026	Numerai GP LLC	5,792	$428K	0.1%	N/A	0.005%
2/18/2026	Occudo Quantitative Strategies LP	25,180	$1.86M	0.1%	-8.1%	0.020%
2/18/2026	Odyssean LLC	2,903	$215K	0.2%	N/A	0.002%
2/18/2026	Millennium Management LLC	427,754	$31.63M	0.0%	+302.3%	0.333%
2/18/2026	Inspire Investing LLC	4,404	$326K	0.0%	+10.3%	0.003%
2/18/2026	Janus Henderson Group PLC	334,593	$24.74M	0.0%	-8.6%	0.261%
2/18/2026	Gotham Asset Management LLC	9,199	$680K	0.0%	-58.3%	0.007%
2/18/2026	Engineers Gate Manager LP	289,255	$21.39M	0.3%	N/A	0.226%
2/18/2026	Aventail Capital Group LP	27,764	$2.05M	0.1%	-64.6%	0.022%
2/17/2026	Guggenheim Capital LLC	4,174	$309K	0.0%	N/A	0.003%
2/17/2026	Luminus Management LLC	35,189	$2.60M	2.3%	N/A	0.027%
2/17/2026	Schonfeld Strategic Advisors LLC	6,012	$445K	0.0%	-86.9%	0.005%
2/17/2026	PDT Partners LLC	64,977	$4.80M	0.3%	+232.9%	0.051%
2/17/2026	AQR Capital Management LLC	20,535	$1.52M	0.0%	-60.9%	0.016%
2/17/2026	Cetera Investment Advisers	3,154	$233K	0.0%	-32.6%	0.002%
2/17/2026	Lazard Asset Management LLC	74,428	$5.50M	0.0%	+2.5%	0.058%
2/17/2026	Jain Global LLC	62,043	$4.59M	0.0%	+399.7%	0.048%
2/17/2026	iSAM Funds UK Ltd	2,828	$209K	0.1%	N/A	0.002%
2/17/2026	Orbis Allan Gray Ltd	4,386,635	$324.35M	1.4%	+12.1%	3.420%
2/17/2026	Jump Financial LLC	17,600	$1.30M	0.0%	-77.4%	0.014%
2/17/2026	Sciencast Management LP	15,619	$1.16M	0.2%	N/A	0.012%
2/17/2026	Price T Rowe Associates Inc. MD	2,208,715	$163.31M	0.0%	+0.0%	1.722%
2/17/2026	Weiss Asset Management LP	9,928	$734K	0.0%	N/A	0.008%
2/17/2026	Public Employees Retirement System of Ohio	10,056	$744K	0.0%	-3.7%	0.008%
2/17/2026	California State Teachers Retirement System	36,098	$2.67M	0.0%	+1,628.0%	0.028%
2/17/2026	State of Wisconsin Investment Board	25,711	$1.90M	0.0%	N/A	0.020%
2/17/2026	ExodusPoint Capital Management LP	154,391	$11.42M	0.1%	N/A	0.120%
2/17/2026	Royal Bank of Canada	85,270	$6.31M	0.0%	-77.7%	0.066%
2/17/2026	Aster Capital Management DIFC Ltd	820	$61K	0.0%	N/A	0.001%
2/17/2026	Alberta Investment Management Corp	19,700	$1.46M	0.0%	N/A	0.015%
2/16/2026	Vanguard Personalized Indexing Management LLC	9,755	$721K	0.0%	+4.4%	0.008%
2/16/2026	Verition Fund Management LLC	26,078	$1.93M	0.0%	-4.0%	0.020%
2/16/2026	Marnell Management LLC	11,700	$865K	0.4%	N/A	0.009%
2/16/2026	Entropy Technologies LP	20,137	$1.49M	0.1%	+246.2%	0.016%
SpaceX eyes a 1.75 trillion valuation - here's what to know (Ad) Elon Musk's team has quietly filed confidential paperwork with the SEC for what Bloomberg estimates could be a $1.75 trillion IPO - larger than Saudi Aramco and any tech offering in history. CNBC calls it 'the big market event of 2026.' According to former tech executive and angel investor Jeff Brown, there's a way to claim a stake before the public filing drops, starting with as little as $500. See how to get positioned in SpaceX before the announcement goes public
2/16/2026	Barclays PLC	66,613	$4.93M	0.0%	-118.1%	0.052%
2/16/2026	Agman Capital LLC	72,283	$5.35M	4.5%	N/A	0.056%
2/13/2026	Kestra Advisory Services LLC	1,138	$84K	0.0%	N/A	0.001%
2/13/2026	Transamerica Financial Advisors LLC	805	$59K	0.0%	+37.4%	0.001%
2/13/2026	The Manufacturers Life Insurance Company	33,451	$2.47M	0.0%	+19.1%	0.026%
2/13/2026	CANADA LIFE ASSURANCE Co	19,331	$1.43M	0.0%	+27.1%	0.015%
2/13/2026	UMB Bank n.a.	393	$29K	0.0%	-32.0%	0.000%
2/13/2026	Stifel Financial Corp	18,921	$1.40M	0.0%	+12.9%	0.015%
2/13/2026	Hudson Bay Capital Management LP	30,443	$2.25M	0.0%	+770.8%	0.024%
2/13/2026	Quarry LP	426	$31K	0.0%	N/A	0.000%

WLK Institutional Ownership - Frequently Asked Questions

During the previous two years, 393 institutional investors and hedge funds held shares of Westlake. The most heavily invested institutionals were Orbis Allan Gray Ltd ($324.35M), Wellington Management Group LLP ($312.08M), Vanguard Group Inc. ($289.65M), Dimensional Fund Advisors LP ($171.26M), FMR LLC ($164.94M), Price T Rowe Associates Inc. MD ($163.31M), and Capital World Investors ($160.55M).Learn more on Westlake's institutional investors.

28.40% of Westlake's stock is owned by institutional investors. Learn more on WLK's institutional investor holdings.

Of the 335 institutional investors that purchased Westlake's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Wellington Management Group LLP ($4.17M), Capital World Investors ($2.17M), Norges Bank ($1.96M), Balyasny Asset Management L.P. ($1.27M), Millennium Management LLC ($1.17M), Victory Capital Management Inc. ($1.16M), and Brandes Investment Partners LP ($1.16M).

Institutional investors have bought a total of 20,015,812 shares in the last 24 months. This purchase volume represents approximately $1.52B in transactions.

Of the 122 institutional investors that sold Westlake's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Victory Capital Management Inc. ($2.61M), Millennium Management LLC ($683.53K), Balyasny Asset Management L.P. ($442.03K), Ilex Capital Partners UK LLP ($425.44K), Dimensional Fund Advisors LP ($419.66K), ANTIPODES PARTNERS Ltd ($406.65K), and Jacobs Levy Equity Management Inc. ($316.85K).

Institutional investors have sold a total of 9,394,529 shares in the last 24 months. This volume of shares sold represents approximately $743.67M in transactions.

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This page (NYSE:WLK) was last updated on 6/3/2026 by MarketBeat.com Staff.

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Westlake (WLK) Institutional Ownership

WLK Institutional Buying and Selling by Quarter

Westlake Major Shareholders & Ownership History

WLK Institutional Ownership - Frequently Asked Questions

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Westlake (WLK) Institutional Ownership

Institutional Ownership Changes (13F Filings) for Westlake (NYSE:WLK)

WLK Institutional Buying and Selling by Quarter

Westlake Major Shareholders & Ownership History

WLK Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of WLK shares?

What percentage of Westlake's stock is owned by institutional investors?

Which institutional investors have been buying Westlake's stock?

How much institutional buying is happening at Westlake?

Which of Westlake's major shareholders have been selling company stock?

How much institutional selling is happening at Westlake?

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