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WLK Insider Trading

Insider Ownership Percentage: 1.30%
Insider Buying (Last 12 Months): $7,751.37
Insider Selling (Last 12 Months): $459,424.10

Westlake Insider Trading History Chart

This chart shows the insider buying and selling history at Westlake by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Westlake Share Price & Price History

Current Price: $78.68
Price Change: ▼ Price Decrease of -1.51 (-1.88%)
As of 06/12/2025 04:58 PM ET

This chart shows the closing price history over time for WLK up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Westlake Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
5/27/2025Robert F BuesingerEVPSell83$72.70$6,034.1034,932View SEC Filing Icon  
4/22/2025Robert F BuesingerEVPBuy83$93.39$7,751.3783View SEC Filing Icon  
11/29/2024David Tsung-Hung ChaoDirectorSell1,750$129.08$225,890.007,784View SEC Filing Icon  
11/22/2024David Tsung-Hung ChaoDirectorSell1,750$130.00$227,500.009,534View SEC Filing Icon  
5/3/2024Mark Steven BenderCFOSell4,950$152.19$753,340.5040,356View SEC Filing Icon  
3/15/2024Robert F BuesingerEVPSell3,878$144.50$560,371.0021,144View SEC Filing Icon  
3/13/2024Robert F BuesingerEVPSell122$144.50$17,629.0025,022View SEC Filing Icon  
3/6/2024Mark Steven BenderCFOSell4,804$141.02$677,460.0845,306View SEC Filing Icon  
2/26/2024Mark Steven BenderCFOSell4,854$137.57$667,764.7850,110View SEC Filing Icon  
11/15/2023Robert F BuesingerEVPSell4,215$130.50$550,057.5016,754View SEC Filing Icon  
8/23/2023David Tsung-Hung ChaoDirectorSell1,000$131.00$131,000.0010,148View SEC Filing Icon  
8/26/2022Johnathan Stevan ZoellerCAOSell542$107.08$58,037.36543View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Westlake (NYSE:WLK)

28.40% of Westlake stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at WLK by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Westlake Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
6/4/2025Drummond Knight Asset Management Pty Ltd117,231$11.73M5.9%+37.9%0.091%Search for SEC Filing on Google Icon
6/3/2025Inspire Investing LLC3,140$0.31M0.0%+39.8%0.002%Search for SEC Filing on Google Icon
5/29/2025Rhumbline Advisers100,439$10.05M0.0%+2.4%0.078%Search for SEC Filing on Google Icon
5/19/2025UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC371,175$37.13M0.0%+7.0%0.289%Search for SEC Filing on Google Icon
5/16/2025Faithward Advisors LLC13,234$1.32M0.2%-1.4%0.010%Search for SEC Filing on Google Icon
5/16/2025United Services Automobile Association2,133$0.21M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/16/2025Ashton Thomas Private Wealth LLC7,059$0.71M0.0%N/A0.006%Search for SEC Filing on Google Icon
5/16/2025Goldman Sachs Group Inc.1,041,190$104.15M0.0%+10.9%0.812%Search for SEC Filing on Google Icon
5/16/2025Kestra Investment Management LLC3,932$0.39M0.0%-11.5%0.003%Search for SEC Filing on Google Icon
5/16/2025Jones Financial Companies Lllp48,473$4.85M0.0%+22,982.4%0.038%Search for SEC Filing on Google Icon
5/16/2025Petrus Trust Company LTA6,709$0.67M0.1%+4.5%0.005%Search for SEC Filing on Google Icon
5/16/2025Millennium Management LLC901,229$90.15M0.0%+366.7%0.703%Search for SEC Filing on Google Icon
5/16/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.853,831$85.41M0.2%-3.2%0.666%Search for SEC Filing on Google Icon
5/16/2025Jacobs Levy Equity Management Inc.775,801$77.60M0.3%-2.9%0.605%Search for SEC Filing on Google Icon
5/16/2025AQR Capital Management LLC19,094$1.88M0.0%+9.6%0.015%Search for SEC Filing on Google Icon
5/16/2025Advisors Asset Management Inc.7,622$0.76M0.0%+5.8%0.006%Search for SEC Filing on Google Icon
5/16/2025Amundi50,770$4.79M0.0%-81.8%0.040%Search for SEC Filing on Google Icon
5/16/2025Alyeska Investment Group L.P.192,876$19.29M0.1%+83.3%0.150%Search for SEC Filing on Google Icon
5/16/2025Adage Capital Partners GP L.L.C.5,988$0.60M0.0%-80.0%0.005%Search for SEC Filing on Google Icon
5/15/2025Appian Way Asset Management LP7,165$0.72M0.2%-52.8%0.006%Search for SEC Filing on Google Icon
5/15/2025Royal Bank of Canada38,687$3.87M0.0%+90.0%0.030%Search for SEC Filing on Google Icon
5/15/2025Graham Capital Management L.P.36,754$3.68M0.1%+105.9%0.029%Search for SEC Filing on Google Icon
5/15/2025Vident Advisory LLC9,863$0.99M0.0%+426.3%0.008%Search for SEC Filing on Google Icon
5/15/2025Magnetar Financial LLC27,277$2.73M0.0%N/A0.021%Search for SEC Filing on Google Icon
5/15/2025Canada Pension Plan Investment Board39,364$3.94M0.0%-36.3%0.031%Search for SEC Filing on Google Icon
5/14/2025Keeley Teton Advisors LLC11,566$1.16M0.1%-14.9%0.009%Search for SEC Filing on Google Icon
5/14/2025Corebridge Financial Inc.36,963$3.70M0.0%-2.4%0.029%Search for SEC Filing on Google Icon
5/14/2025Comerica Bank30,638$3.07M0.0%+3.5%0.024%Search for SEC Filing on Google Icon
5/14/2025MetLife Investment Management LLC18,583$1.86M0.0%-1.5%0.014%Search for SEC Filing on Google Icon
5/14/2025Walleye Capital LLC34,377$3.44M0.0%+377.1%0.027%Search for SEC Filing on Google Icon
5/14/2025Oliver Luxxe Assets LLC13,885$1.39M0.3%+8.8%0.011%Search for SEC Filing on Google Icon
5/14/2025Jump Financial LLC2,322$0.23M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/14/2025APG Asset Management N.V.19,400$1.80M0.0%-2.5%0.015%Search for SEC Filing on Google Icon
5/14/2025Allstate Corp5,807$0.58M0.0%N/A0.005%Search for SEC Filing on Google Icon
5/14/2025Sprott Inc.90,000$9M0.5%+38.5%0.070%Search for SEC Filing on Google Icon
5/14/20251832 Asset Management L.P.153,740$15.38M0.0%-59.1%0.120%Search for SEC Filing on Google Icon
5/14/2025Erste Asset Management GmbH153,201$15.33M0.2%+8.5%0.119%Search for SEC Filing on Google Icon
5/14/2025Hsbc Holdings PLC10,640$1.06M0.0%-59.7%0.008%Search for SEC Filing on Google Icon
5/14/2025HITE Hedge Asset Management LLC71,475$7.15M0.4%+17.9%0.056%Search for SEC Filing on Google Icon
5/14/2025Quantbot Technologies LP4,451$0.45M0.0%-83.1%0.003%Search for SEC Filing on Google Icon
5/14/2025Wellington Management Group LLP4,674$0.47M0.0%-89.1%0.004%Search for SEC Filing on Google Icon
5/14/2025Korea Investment CORP12,611$1.26M0.0%-7.5%0.010%Search for SEC Filing on Google Icon
5/13/2025Northern Trust Corp314,618$31.47M0.0%+2.9%0.245%Search for SEC Filing on Google Icon
5/13/2025Brooklyn Investment Group601$60K0.0%+66.0%0.000%Search for SEC Filing on Google Icon
5/13/2025Raymond James Financial Inc.112,945$11.30M0.0%-3.4%0.088%Search for SEC Filing on Google Icon
5/13/2025Cresset Asset Management LLC16,127$1.61M0.0%-8.0%0.013%Search for SEC Filing on Google Icon
5/13/2025American Century Companies Inc.22,644$2.27M0.0%-46.9%0.018%Search for SEC Filing on Google Icon
5/13/2025Aberdeen Group plc10,001$1M0.0%N/A0.008%Search for SEC Filing on Google Icon
5/13/2025Kovitz Investment Group Partners LLC14,664$1.47M0.0%-7.9%0.011%Search for SEC Filing on Google Icon
5/13/2025Robotti Robert164,696$16.48M3.3%+0.2%0.128%Search for SEC Filing on Google Icon
5/13/2025Neuberger Berman Group LLC2,775$0.28M0.0%-6.0%0.002%Search for SEC Filing on Google Icon
5/13/2025Caitong International Asset Management Co. Ltd559$56K0.0%+3,005.6%0.000%Search for SEC Filing on Google Icon
5/13/2025HighTower Advisors LLC2,548$0.26M0.0%-5.8%0.002%Search for SEC Filing on Google Icon
5/12/2025Nuveen LLC729,521$72.97M0.0%N/A0.569%Search for SEC Filing on Google Icon
5/12/2025Aigen Investment Management LP10,572$1.06M0.2%+101.3%0.008%Search for SEC Filing on Google Icon
5/12/2025Entropy Technologies LP4,331$0.43M0.0%-48.7%0.003%Search for SEC Filing on Google Icon
5/12/2025Invesco Ltd.134,380$13.44M0.0%-9.2%0.105%Search for SEC Filing on Google Icon
5/12/2025Mitsubishi UFJ Asset Management Co. Ltd.29,692$2.97M0.0%+1.0%0.023%Search for SEC Filing on Google Icon
5/9/2025Mutual of America Capital Management LLC17,222$1.72M0.0%-2.6%0.013%Search for SEC Filing on Google Icon
5/9/2025Deutsche Bank AG33,230$3.32M0.0%-13.9%0.026%Search for SEC Filing on Google Icon
5/9/2025Charles Schwab Investment Management Inc.244,497$24.46M0.0%+3.4%0.190%Search for SEC Filing on Google Icon
5/9/2025ASR Vermogensbeheer N.V.2,490$0.25M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/9/2025Vanguard Group Inc.3,550,310$355.14M0.0%-8.4%2.763%Search for SEC Filing on Google Icon
5/9/2025ING Groep NV29,600$2.96M0.0%+32.7%0.023%Search for SEC Filing on Google Icon
5/8/2025Jefferies Financial Group Inc.9,108$0.91M0.0%+336.0%0.007%Search for SEC Filing on Google Icon
5/8/2025US Bancorp DE2,295$0.23M0.0%+13.2%0.002%Search for SEC Filing on Google Icon
5/8/2025Vestcor Inc888$89K0.0%-77.7%0.001%Search for SEC Filing on Google Icon
5/8/2025XTX Topco Ltd14,995$1.50M0.1%N/A0.012%Search for SEC Filing on Google Icon
5/8/2025Federated Hermes Inc.3,169$0.32M0.0%-9.7%0.002%Search for SEC Filing on Google Icon
5/7/2025LPL Financial LLC30,421$3.04M0.0%+17.3%0.024%Search for SEC Filing on Google Icon
5/7/2025TD Asset Management Inc3,688$0.37M0.0%-7.8%0.003%Search for SEC Filing on Google Icon
5/7/2025Knights of Columbus Asset Advisors LLC22,364$2.24M0.2%-47.8%0.017%Search for SEC Filing on Google Icon
5/6/2025Universal Beteiligungs und Servicegesellschaft mbH2,816$0.28M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/5/2025Gries Financial LLC13,512$1.35M0.3%N/A0.011%Search for SEC Filing on Google Icon
5/5/2025Allianz Asset Management GmbH2,410$0.24M0.0%-26.1%0.002%Search for SEC Filing on Google Icon
5/5/2025Peterson Wealth Services6,578$0.66M0.2%+2.8%0.005%Search for SEC Filing on Google Icon
5/5/2025Transce3nd LLC4,991$0.50M0.2%+13.3%0.004%Search for SEC Filing on Google Icon
5/2/2025Victory Capital Management Inc.3,900,025$390.12M0.4%+17.7%3.035%Search for SEC Filing on Google Icon
5/2/2025Wealthfront Advisers LLC24,498$2.45M0.0%+61.6%0.019%Search for SEC Filing on Google Icon
5/2/2025Signaturefd LLC427$43K0.0%+127.1%0.000%Search for SEC Filing on Google Icon
5/1/2025Mutual of America Capital Management LLC17,222$1.72M0.0%-2.6%0.013%Search for SEC Filing on Google Icon
4/30/2025Cerity Partners LLC74,928$7.50M0.0%-9.3%0.058%Search for SEC Filing on Google Icon
4/30/2025Allworth Financial LP922$87K0.0%+139.5%0.001%Search for SEC Filing on Google Icon
4/29/2025Envestnet Asset Management Inc.26,535$2.65M0.0%+45.2%0.021%Search for SEC Filing on Google Icon
4/29/2025Bank of New York Mellon Corp219,679$21.97M0.0%-2.8%0.171%Search for SEC Filing on Google Icon
4/28/2025Principal Financial Group Inc.76,996$7.70M0.0%+0.4%0.060%Search for SEC Filing on Google Icon
4/28/2025Teacher Retirement System of Texas5,644$0.57M0.0%N/A0.004%Search for SEC Filing on Google Icon
4/28/2025Private Trust Co. NA316$32K0.0%+251.1%0.000%Search for SEC Filing on Google Icon
4/25/2025New York State Teachers Retirement System7,902$0.79M0.0%-2.5%0.006%Search for SEC Filing on Google Icon
4/25/2025KBC Group NV26,695$2.67M0.0%-2.1%0.021%Search for SEC Filing on Google Icon
4/25/2025Sumitomo Mitsui Trust Group Inc.79,089$7.91M0.0%-0.5%0.062%Search for SEC Filing on Google Icon
4/24/2025Allspring Global Investments Holdings LLC551,766$55.17M0.1%+46.6%0.429%Search for SEC Filing on Google Icon
4/24/2025Total Wealth Planning & Management Inc.3,965$0.40M0.4%+51.3%0.003%Search for SEC Filing on Google Icon
4/23/2025Asset Management One Co. Ltd.12,253$1.23M0.0%+4.6%0.010%Search for SEC Filing on Google Icon
4/22/2025Manning & Napier Advisors LLC26,171$2.62M0.0%+39.3%0.020%Search for SEC Filing on Google Icon
4/22/2025Kentucky Retirement Systems2,289$0.23M0.0%N/A0.002%Search for SEC Filing on Google Icon
4/21/2025MFA Wealth Advisors LLC2,171$0.22M0.1%N/A0.002%Search for SEC Filing on Google Icon
4/17/2025QRG Capital Management Inc.8,680$0.87M0.0%-15.5%0.007%Search for SEC Filing on Google Icon
4/17/2025Janney Montgomery Scott LLC61,134$6.12M0.0%+2.7%0.048%Search for SEC Filing on Google Icon
4/17/2025Mn Services Vermogensbeheer B.V.13,700$1.37M0.0%-12.2%0.011%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Westlake logo
Westlake Corporation engages in the manufacture and marketing of performance and essential materials, and housing and infrastructure products in the United States, Canada, Germany, China, Mexico, Brazil, France, Italy, Taiwan, and internationally. The company operates through two segments: Performance and Essential Materials and Housing and Infrastructure Products. The Performance and Essential Materials segment offers ethylene, polyethylene, styrene, chlorinated derivative products, ethylene dichloride, vinyl chloride monomer, polyvinyl chloride (PVC), epoxy specialty resins, and base epoxy resins and intermediaries, as well as chlor-alkali, such as chlorine and caustic soda. The Housing and Infrastructure Products segment provides residential PVC sidings; PVC trim and mouldings; architectural stone veneers; windows; PVC decking; PVC films for various inflatables, wallcovering, and tape and roofing applications; polymer composite and cement roof tiles; PVC pipes and fittings for various water, sewer, electrical, and industrial applications; PVC compounds used in various housing, medical, and automobile products; and consumer and commercial products, such as landscape edging; industrial, home, and office matting; marine dock edging; and masonry joint controls. It offers its products to chemical processors, plastics fabricators, small construction contractors, municipalities, and supply warehouses for use in various consumer and industrial markets, including residential construction, flexible and rigid packaging, automotive products, healthcare products, water treatment, wind turbines, and coatings, as well as other durable and non-durable goods. The company was formerly known as Westlake Chemical Corporation and changed its name to Westlake Corporation in February 2022. Westlake Corporation was founded in 1986 and is headquartered in Houston, Texas. Westlake Corporation operates as a subsidiary of TTWF LP.
Read More on Westlake

Today's Range

Now: $78.68
Low: $78.13
High: $79.93

50 Day Range

MA: $82.55
Low: $69.83
High: $94.80

52 Week Range

Now: $78.68
Low: $68.55
High: $156.64

Volume

1,749,049 shs

Average Volume

702,784 shs

Market Capitalization

$10.09 billion

P/E Ratio

110.82

Dividend Yield

2.92%

Beta

0.91

Who are the company insiders with the largest holdings of Westlake?

Westlake's top insider investors include:
  1. Mark Steven Bender (CFO)
  2. Robert F Buesinger (EVP)
  3. David Tsung-Hung Chao (Director)
Learn More about top insider investors at Westlake.

Who are the major institutional investors of Westlake?

Westlake's top institutional shareholders include:
  1. Victory Capital Management Inc. — 3.04%
  2. Vanguard Group Inc. — 2.76%
  3. Goldman Sachs Group Inc. — 0.81%
  4. Millennium Management LLC — 0.70%
  5. MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. — 0.67%
  6. Jacobs Levy Equity Management Inc. — 0.60%
Learn More about top institutional investors of Westlake stock.

Which institutional investors are selling Westlake stock?

Within the last quarter, WLK stock was sold by these institutional investors:
  1. Vanguard Group Inc.
  2. Amundi
  3. 1832 Asset Management L.P.
  4. SG Americas Securities LLC
  5. Wellington Management Group LLP
  6. MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
  7. Adage Capital Partners GP L.L.C.
  8. Jacobs Levy Equity Management Inc.
In the last year, company insiders that have sold Westlake company stock include:
  1. Mark Steven Bender (CFO)
  2. Robert F Buesinger (EVP)
Learn More investors selling Westlake stock.

Which institutional investors are buying Westlake stock?

During the previous quarter, WLK stock was purchased by institutional investors including:
  1. Nuveen LLC
  2. Millennium Management LLC
  3. Victory Capital Management Inc.
  4. Allspring Global Investments Holdings LLC
  5. Goldman Sachs Group Inc.
  6. Alyeska Investment Group L.P.
  7. GAMMA Investing LLC
  8. Jane Street Group LLC