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Compare · SEE vs WLK

SEE vs WLK

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

Summary

  • Both SEE and WLK operate in Major Chemicals (Industrials), so they compete in similar markets.
  • WLK is the larger of the two at $14.27B, about 1.4x SEE ($10.06B).
  • Over the past year, SEE is up 53.1% and WLK is up 23.6% - SEE leads by 29.5 points.
  • SEE has been more active in the news (39 items in the past 4 weeks vs 10 for WLK).
  • Both have 25 recent analyst ratings on file.
PerformanceSEE+53.10%WLK+57.91%
2025-04-30+0.00%2026-04-08
MetricSEEWLK
Company
Sealed Air Corporation
Westlake Corporation
Price
$42.14-0.02%
$114.20+2.47%
Market cap
$10.06B
$14.27B
1M return
+0.29%
-2.19%
1Y return
+53.10%
+23.61%
Industry
Major Chemicals
Major Chemicals
Exchange
NYSE
NYSE
IPO
2004
News (4w)
39
10
Recent ratings
25
25
SEE

Sealed Air Corporation

Sealed Air Corporation provides food safety and security, and product protection solutions and equipment in North America, South America, Europe, the Middle East, Africa, and the Asia Pacific. It operates in two segments, Food and Protective. The Food segment offers integrated packaging materials and automation equipment solutions to provide food safety and shelf life extension, automate processes, and optimize total cost for perishable food processors in the fresh red meat, smoked and processed meats, poultry, seafood, plant-based, and dairy markets under the Cryovac, Cryovac Grip & Tear, Cryovac Darfresh, Cryovac Mirabella, Simple Steps, and Optidure brands. This segment sells its solutions directly to customers through its sales, marketing, and customer service personnel. The Protective segment provides foam, corrugated, molded pulp, and wood packaging solutions to protect goods in shipping for the e-commerce, consumer goods, pharmaceutical and medical devices, and industrial manufacturing markets under the Bubble Wrap, Autobag, Sealed Air, Instapak, Korrvu, Kevothermal, and TempGuard brands. This segment sells its solutions through supply distributors, as well as directly to fabricators, original equipment manufacturers, contract manufacturers, third-party logistics partners, e-commerce/fulfillment operations, and retail centers. Sealed Air Corporation was founded in 1960 and is headquartered in Charlotte, North Carolina.

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.