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Westlake (WLK) Institutional Ownership

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$92.61 -3.93 (-4.07%)
Closing price 05/13/2026 03:59 PM Eastern
Extended Trading
$92.88 +0.26 (+0.29%)
As of 08:13 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Westlake (NYSE:WLK)

Current
Institutional Ownership
Percentage
28.40%
Number of
Institutional Buyers
(last 12 months)
205
Total
Institutional Inflows
(last 12 months)
$1.60B
Number of
Institutional Sellers
(last 12 months)
132
Total
Institutional Outflows
(last 12 months)
$769.45M
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WLK Institutional Buying and Selling by Quarter

Westlake Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/14/2026Sei Investments Co.12,769$1.49M0.0%-55.1%0.010%
5/13/2026Cetera Investment Advisers3,921$458K0.0%+24.3%0.003%
5/13/2026First Trust Advisors LP102,299$11.95M0.0%-30.1%0.080%
5/8/2026 PNC Financial Services Group Inc.1,522$178K0.0%+14.0%0.001%
5/7/2026 Dimensional Fund Advisors LP1,466,020$171.26M0.0%-22.3%1.145%
5/7/2026 Parallel Advisors LLC830$97K0.0%+133.8%0.001%
5/7/2026 KBC Group NV19,432$2.27M0.0%-12.6%0.015%
5/6/2026 California Public Employees Retirement System25,000$2.92M0.0%-46.5%0.020%
5/6/2026 Allspring Global Investments Holdings LLC285,434$33.28M0.1%-43.7%0.223%
5/5/2026 Bank of New York Mellon Corp181,070$21.15M0.0%+3.9%0.141%
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5/5/2026 Sanctuary Advisors LLC3,272$382K0.0%-4.9%0.003%
5/5/2026 Maryland State Retirement & Pension System1,915$224K0.0%N/A0.001%
5/4/2026 AMG National Trust Bank23,041$2.69M0.1%-1.2%0.018%
5/4/2026 Archer Investment Corp2,493$291K0.1%N/A0.002%
5/4/2026 State of Michigan Retirement System8,000$935K0.0%+1.3%0.006%
5/4/2026 Principal Financial Group Inc.74,481$8.70M0.0%+3.9%0.058%
5/4/2026 Teachers Retirement System of The State of Kentucky178,160$20.81M0.2%+7.8%0.139%
5/1/2026 Fifth Third Bancorp16,045$1.87M0.0%+2,755.0%0.013%
4/30/2026 Oregon Public Employees Retirement Fund6,868$802K0.0%+3.0%0.005%
4/27/2026 New York State Teachers Retirement System4,143$484K0.0%-20.7%0.003%
4/24/2026 Deprince Race & Zollo Inc.203,366$23.76M0.4%-0.4%0.159%
4/23/2026 Inspire Investing LLC2,836$331K0.0%-35.6%0.002%
4/22/2026 Sterling Capital Management LLC1,122$131K0.0%-43.2%0.001%
4/21/2026 Louisiana State Employees Retirement System9,700$1.13M0.0%N/A0.008%
4/16/2026 SG Americas Securities LLC24,576$2.87M0.0%-33.6%0.019%
4/16/2026 BI Asset Management Fondsmaeglerselskab A S42,043$4.91M0.1%+497.5%0.033%
3/17/2026Rockefeller Capital Management L.P.955$71K0.0%+219.4%0.001%
3/9/2026Corient Private Wealth LLC50,715$3.75M0.0%+53.6%0.040%
2/24/2026 Pacer Advisors Inc.3,988$295K0.0%-33.6%0.003%
2/19/2026 Invesco Ltd.213,157$15.76M0.0%+58.2%0.166%
2/19/2026Corient Private Wealth LLC50,715$3.75M0.0%+53.6%0.040%
2/19/2026 Alberta Investment Management Corp19,700$1.46M0.0%N/A0.015%
2/18/2026Alpine Woods Capital Investors LLC8,989$665K0.2%N/A0.007%
2/18/2026Mercer Global Advisors Inc. ADV3,923$290K0.0%-7.5%0.003%
2/18/2026State of Tennessee Department of Treasury12,946$1.03M0.0%+158.2%0.010%
2/18/2026Mackenzie Financial Corp19,833$1.48M0.0%-21.7%0.015%
2/18/2026Empowered Funds LLC2,823$209K0.0%N/A0.002%
2/18/2026VARCOV Co.35,597$2.63M1.0%N/A0.028%
2/18/2026Voloridge Investment Management LLC348,953$25.80M0.1%-11.5%0.272%
2/18/2026Virtus Investment Advisers LLC2,186$162K0.0%N/A0.002%
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2/18/2026Wellington Management Group LLP4,220,717$312.08M0.1%+7,239.1%3.290%
2/18/2026Polymer Capital Management US LLC6,500$481K0.1%-59.9%0.005%
2/18/2026Numerai GP LLC5,792$428K0.1%N/A0.005%
2/18/2026Occudo Quantitative Strategies LP25,180$1.86M0.1%-8.1%0.020%
2/18/2026Odyssean LLC2,903$215K0.2%N/A0.002%
2/18/2026Millennium Management LLC427,754$31.63M0.0%+302.3%0.333%
2/18/2026 Inspire Investing LLC4,404$326K0.0%+10.3%0.003%
2/18/2026Janus Henderson Group PLC334,593$24.74M0.0%-8.6%0.261%
2/18/2026Gotham Asset Management LLC9,199$680K0.0%-58.3%0.007%
2/18/2026Engineers Gate Manager LP289,255$21.39M0.3%N/A0.226%
2/18/2026Aventail Capital Group LP27,764$2.05M0.1%-64.6%0.022%
2/17/2026Guggenheim Capital LLC4,174$309K0.0%N/A0.003%
2/17/2026Luminus Management LLC35,189$2.60M2.3%N/A0.027%
2/17/2026Schonfeld Strategic Advisors LLC6,012$445K0.0%-86.9%0.005%
2/17/2026PDT Partners LLC64,977$4.80M0.3%+232.9%0.051%
2/17/2026AQR Capital Management LLC20,535$1.52M0.0%-60.9%0.016%
2/17/2026Cetera Investment Advisers3,154$233K0.0%-32.6%0.002%
2/17/2026Lazard Asset Management LLC74,428$5.50M0.0%+2.5%0.058%
2/17/2026Jain Global LLC62,043$4.59M0.0%+399.7%0.048%
2/17/2026iSAM Funds UK Ltd2,828$209K0.1%N/A0.002%
2/17/2026Orbis Allan Gray Ltd4,386,635$324.35M1.4%+12.1%3.420%
2/17/2026Jump Financial LLC17,600$1.30M0.0%-77.4%0.014%
2/17/2026Sciencast Management LP15,619$1.16M0.2%N/A0.012%
2/17/2026Price T Rowe Associates Inc. MD2,208,715$163.31M0.0%+0.0%1.722%
2/17/2026Weiss Asset Management LP9,928$734K0.0%N/A0.008%
2/17/2026Public Employees Retirement System of Ohio10,056$744K0.0%-3.7%0.008%
2/17/2026California State Teachers Retirement System36,098$2.67M0.0%+1,628.0%0.028%
2/17/2026State of Wisconsin Investment Board25,711$1.90M0.0%N/A0.020%
2/17/2026ExodusPoint Capital Management LP154,391$11.42M0.1%N/A0.120%
2/17/2026Royal Bank of Canada85,270$6.31M0.0%-77.7%0.066%
2/17/2026Aster Capital Management DIFC Ltd820$61K0.0%N/A0.001%
2/17/2026 Alberta Investment Management Corp19,700$1.46M0.0%N/A0.015%
2/16/2026Vanguard Personalized Indexing Management LLC9,755$721K0.0%+4.4%0.008%
2/16/2026Verition Fund Management LLC26,078$1.93M0.0%-4.0%0.020%
2/16/2026Marnell Management LLC11,700$865K0.4%N/A0.009%
2/16/2026Entropy Technologies LP20,137$1.49M0.1%+246.2%0.016%
2/16/2026Barclays PLC66,613$4.93M0.0%-118.1%0.052%
2/16/2026 Agman Capital LLC72,283$5.35M4.5%N/A0.056%
2/13/2026 Kestra Advisory Services LLC1,138$84K0.0%N/A0.001%
2/13/2026Transamerica Financial Advisors LLC805$59K0.0%+37.4%0.001%
2/13/2026The Manufacturers Life Insurance Company 33,451$2.47M0.0%+19.1%0.026%
2/13/2026CANADA LIFE ASSURANCE Co19,331$1.43M0.0%+27.1%0.015%
2/13/2026 UMB Bank n.a.393$29K0.0%-32.0%0.000%
2/13/2026 Stifel Financial Corp18,921$1.40M0.0%+12.9%0.015%
2/13/2026Hudson Bay Capital Management LP30,443$2.25M0.0%+770.8%0.024%
2/13/2026Quarry LP426$31K0.0%N/A0.000%
2/13/2026Morgan Stanley759,623$56.17M0.0%-6.9%0.592%
2/13/2026Jacobs Levy Equity Management Inc.668,405$49.42M0.2%-22.3%0.521%
2/13/2026Recurrent Investment Advisors LLC75,633$5.59M0.4%+317.7%0.059%
2/13/2026First Trust Advisors LP146,411$10.83M0.0%-11.2%0.114%
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2/13/2026Alyeska Investment Group L.P.103,041$7.62M0.0%-14.1%0.080%
2/13/2026Charles Schwab Investment Management Inc.297,248$21.98M0.0%+8.9%0.232%
2/13/2026Thomist Capital Management LP111,900$8.37M1.8%+142.2%0.087%
2/13/2026State Street Corp1,396,633$103.27M0.0%+7.8%1.089%
2/13/2026Victory Capital Management Inc.1,113,819$82.36M0.0%-61.1%0.868%
2/13/2026 Storgate LLC5,380$398K0.3%N/A0.004%
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC924,704$68.37M0.0%+0.8%0.721%
2/13/2026 Wells Fargo & Company MN91,879$6.79M0.0%-5.4%0.072%
2/13/2026Van Lanschot Kempen Investment Management N.V.235,919$17.44M0.2%+20.3%0.184%
2/13/2026HITE Hedge Asset Management LLC52,153$3.86M0.2%-47.8%0.041%


WLK Institutional Ownership - Frequently Asked Questions

During the previous two years, 397 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 338 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 ($2.20M), 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 20,864,332 shares in the last 24 months. This purchase volume represents approximately $1.60B in transactions.

Of the 125 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. ($340.30K).

Institutional investors have sold a total of 9,662,965 shares in the last 24 months. This volume of shares sold represents approximately $769.45M in transactions.


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This page (NYSE:WLK) was last updated on 5/14/2026 by MarketBeat.com Staff.
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