Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate Westlake Corporation before investing.

In this article, we go over a few key elements for understanding Westlake Corporation’s stock price such as:

• Westlake Corporation’s current stock price and volume
• Why Westlake Corporation’s stock price changed recently
• Upgrades and downgrades for WLK from analysts
• WLK’s stock price momentum as measured by its relative strength

About Westlake Corporation (WLK)

Before we jump into Westlake Corporation’s stock price, history, target price and what caused it to recently rise, let’s take a look at some background.

Westlake Corporation manufactures and markets performance and essential materials, and housing and infrastructure products in the United States, Canada, Germany, China, Mexico, Brazil, France, Italy, and internationally. It operates through two segments, Performance and Essential Materials and The Housing and Infrastructure Products. The Performance and Essential Materials segment offers ethylene, polyethylene, chlor-alkali, chlorinated derivative products, ethylene dichloride, vinyl chloride monomer, polyvinyl chloride (PVC), epoxy specialty resins, and base epoxy resins and intermediaries. The Housing and Infrastructure Products segment provides residential PVC sidings; PVC trim and mouldings; architectural stone veneers; windows; PVC decking; polymer composite and cement roof tiles; PVC pipes and fittings for various water, sewer, electrical, and industrial applications; and PVC compounds for various housing, medical, and automobile products. This segment also offers 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 is a subsidiary of TTWF LP.

Want to learn more about Westlake Corporation’s stock? Click the button below to subscribe to A+ Investor and get access to everything you need to know about Westlake Corporation.

Westlake Corporation’s Stock Price as of Market Close

As of August 21, 2026, 3:16 PM, CST, Westlake Corporation’s stock price was $79.050.

Westlake Corporation is up 0.25% from its previous closing price of $78.850.

During the last market session, Westlake Corporation’s stock traded between $79.020 and $80.090. Currently, there are approximately 128.04 million shares outstanding for Westlake Corporation.

Westlake Corporation’s trailing earnings per share are negative, so the stock does not have a meaningful P/E ratio. We suggest investors evaluate other financial metrics to understand its overall valuation.

Westlake Corporation Stock Price History

Westlake Corporation’s (WLK) price is currently up 12.13% so far this month.

During the month of August, Westlake Corporation’s stock price has reached a high of $80.980 and a low of $68.700.

Over the last year, Westlake Corporation has hit prices as high as $124.230 and as low as $56.330. Year to date, Westlake Corporation’s stock is up 6.91%.

Sign Up to Receive a Free Special Report Showing How A+ Grades Can Help You Make Smarter Investment Decisions

What Caused Westlake Corporation Stock’s Price to Rise?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of August 20, 2026, there were 0 analysts who downgraded Westlake Corporation’s stock and 1 analyst who upgraded over the last month.

Additionally, you'll want to evaluate Westlake Corporation’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on Westlake Corporation’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

Westlake Corporation’s current valuation based on AAII’s Value Grade is a C, which means it is considered to be Average.

Learn how to evaluate stocks with AAII Grades and Scores with A+ Investor today.

Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about Westlake Corporation (WLK) by visiting AAII Stock Evaluator.

Relative Price Strength of Westlake Corporation

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of August 20, 2026, Westlake Corporation has a weighted four-quarter relative price strength of -3.28%, which translates to a Momentum Score of 39 and is considered to be Weak.

Want to learn more about how Westlake Corporation is graded based on AAII’s composite scores for value, growth, quality and earnings estimate revisions? Subscribe to A+ Investor today.

Westlake Corporation Stock Price: Bottom Line

As of August 21, 2026, Westlake Corporation’s stock price is $79.050, which is up 0.25% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like Westlake Corporation stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

Subscribing to AAII's A+ Investor provides access to comprehensive analytics and insights for confident investing.