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Compare · LYB vs WLK

LYB vs WLK

Side-by-side comparison of LyondellBasell Industries NV (LYB) and Westlake Corporation (WLK): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both LYB and WLK operate in Major Chemicals (Industrials), so they compete in similar markets.
  • LYB is the larger of the two at $20.80B, about 1.9x WLK ($10.92B).
  • Over the past year, LYB is up 10.0% and WLK is up 12.3% - WLK leads by 2.3 points.
  • LYB has been more active in the news (19 items in the past 4 weeks vs 4 for WLK).
  • Both have 25 recent analyst ratings on file.
PerformanceLYB+10.04%WLK+12.30%
2025-06-09+0.00%2026-06-08
MetricLYBWLK
Company
LyondellBasell Industries NV
Westlake Corporation
Price
$64.36-0.20%
$85.25+0.80%
Market cap
$20.80B
$10.92B
1M return
-9.97%
-12.46%
1Y return
+10.04%
+12.30%
Industry
Major Chemicals
Major Chemicals
Exchange
NYSE
NYSE
IPO
2004
News (4w)
19
4
Recent ratings
25
25
LYB

LyondellBasell Industries NV

LyondellBasell Industries N.V. operates as a chemical company in the United States, Germany, Mexico, Italy, Poland, France, Japan, China, the Netherlands, and internationally. The company operates in six segments: Olefins and Polyolefins—Americas; Olefins and Polyolefins—Europe, Asia, International; Intermediates and Derivatives; Advanced Polymer Solutions; Refining; and Technology. It produces and markets olefins and co-products; polyolefins; polyethylene products, which consist of high density polyethylene, low density polyethylene, and linear low density polyethylene; and polypropylene (PP) products, such as PP homopolymers and copolymers. The company also produces and sells propylene oxide and its derivatives; oxyfuels and related products; and intermediate chemicals, such as styrene monomers, acetyls, ethylene glycols, and ethylene oxides and derivatives. In addition, it produces and markets compounds and solutions, such as polypropylene compounds, engineered plastics, masterbatches, engineered composites, colors, and powders; and advanced polymers. Further, the company refines crude oil and other crude oils of varied types and sources into gasoline, diesel, and jet fuel; develops and licenses chemical and polyolefin process technologies; and manufactures and sells polyolefin catalysts. LyondellBasell Industries N.V. was founded in 1955 and is headquartered in Houston, Texas.

WLK

Westlake Corporation

Westlake Chemical Corporation, together with its subsidiaries, manufactures and markets basic chemicals, vinyls, polymers, and building products worldwide. It operates through two segments, Vinyls and Olefins. The Vinyls segment provides specialty and commodity polyvinyl chloride (PVC), vinyl chloride monomers, ethylene dichloride, chlorine, caustic soda, chlorinated derivative, and ethylene products. This segment also manufactures and sells PVC compounds and building products fabricated from PVC, including residential siding, trim and molding, pipe and fittings for various water, sewer and industrial applications, profiles for windows and doors, decking products, films for various inflatables, wall covering tapes, roofing applications, and composite roof tiles. The Olefins segment offers polyethylene, styrene monomers, and various ethylene co-products, as well as sells propylene, crude butadiene, pyrolysis gasoline, and hydrogen products. Westlake Chemical Corporation offers its products to a range of customers, including chemical processors, plastics fabricators, small construction contractors, municipalities, and supply warehouses in various consumer and industrial markets, such as flexible and rigid packaging, automotive products, coatings, water treatment, refrigerants, and residential and commercial construction, as well as other durable and non-durable goods. The company was founded in 1986 and is headquartered in Houston, Texas. Westlake Chemical Corporation is a subsidiary of TTWF LP.

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