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Compare · OLN vs WLK

OLN vs WLK

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

Summary

  • Both OLN and WLK operate in Major Chemicals (Industrials), so they compete in similar markets.
  • WLK is the larger of the two at $11.07B, about 3.8x OLN ($2.93B).
  • Over the past year, OLN is up 34.3% and WLK is up 23.7% - OLN leads by 10.6 points.
  • WLK has been more active in the news (6 items in the past 4 weeks vs 3 for OLN).
  • Both have 25 recent analyst ratings on file.
PerformanceOLN+34.31%WLK+23.71%
2025-06-02+0.00%2026-06-01
MetricOLNWLK
Company
Olin Corporation
Westlake Corporation
Price
$25.74-0.48%
$86.39-0.46%
Market cap
$2.93B
$11.07B
1M return
-9.65%
-25.07%
1Y return
+34.31%
+23.71%
Industry
Major Chemicals
Major Chemicals
Exchange
NYSE
NYSE
IPO
2004
News (4w)
3
6
Recent ratings
25
25
OLN

Olin Corporation

Olin Corporation manufactures and distributes chemical products in the United States, Europe, and internationally. It operates through three segments: Chlor Alkali Products and Vinyls; Epoxy; and Winchester. The Chlor Alkali Products and Vinyls segment offers chlorine and caustic soda, ethylene dichloride and vinyl chloride monomers, methyl chloride, methylene chloride, chloroform, carbon tetrachloride, perchloroethylene, trichloroethylene, hydrochloric acid, hydrogen, bleach products, potassium hydroxide, chlorinated organics intermediates and solvents, and sodium hypochlorite. The Epoxy segment provides epoxy materials and precursors, including aromatics, such as acetone, bisphenol, cumene, and phenol, as well as allyl chloride, epichlorohydrin, and glycerin used for the manufacturers of polymers, resins and other plastic materials, water purification, and pesticides; liquid and solid epoxy resins that are used in adhesives, paints and coatings, composites, and flooring; and converted epoxy resins and additives for use in electrical laminates, paints and coatings, wind blades, electronics, and construction. The Winchester segment offers sporting ammunition products, including shotshells, small caliber centerfire, and rimfire ammunition products for hunters and recreational shooters, and law enforcement agencies; small caliber military ammunition products for use in infantry and mounted weapons; and industrial products comprising gauge loads and powder-actuated tool loads for maintenance applications in power and concrete industries, and powder-actuated tools in construction industry. The company markets its products through its sales force, as well as directly to various industrial customers, mass merchants, retailers, wholesalers, other distributors, and the U.S. Government and its prime contractors. Olin Corporation was founded in 1892 and is based in Clayton, Missouri.

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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