Sifting through countless of stocks in the Chemicals industry can be tedious, and sometimes two stocks are just too similar to judge which is the better investment. If you’re on the fence about investing in Eastman Chemical Company or Westlake Corporation because you’re not sure how they measure up, it’s important to compare them on a few factors before making your decision.

Read on to learn how Eastman Chemical Company and Westlake Corporation compare based on key financial metrics to determine which better meets your investment needs.

About Eastman Chemical Company and Westlake Corporation

Eastman Chemical Company operates as a specialty materials company in the United States, China, and internationally. The company’s Additives & Functional Products segment offers amine derivative-based building blocks, intermediates for surfactants, metam-based soil fumigants, and organic acid-based solutions; specialty coalescent and solvents, paint additives, and specialty polymers; and heat transfer and aviation fluids. It serves transportation, personal care, wellness, food, feed, agriculture, building and construction, water treatment, energy, consumables, durables, and electronics markets. Its Advanced Materials segment provides copolyesters, cellulosic biopolymers, polyvinyl butyral sheets, polyester films and window and protective films for value-added end uses in the transportation, durables, electronics, building and construction, medical and pharma, and consumables end-markets. The company’s Chemical Intermediates segment offers olefin and acetyl derivatives, methylamines and salts, higher amines and solvents, ethylene, and commodity solvents; and primary non-phthalate and phthalate plasticizers, and niche non-phthalate plasticizers for industrial chemicals and processing, building and construction, health and wellness, and food and feed. Its Fibers segment provides cellulose acetate tow, triacetin, cellulose acetate flake, acetic acid, and acetic anhydride for use in filtration media primarily cigarette filters; natural and solution dyed acetate yarns, and staple fiber for use in consumables, and health and wellness markets; and wet-laid nonwoven media, specialty and engineered papers, and cellulose acetate fibers for transportation, industrial, agriculture and mining, and aerospace markets. Eastman Chemical Company was founded in 1920 and is headquartered in Kingsport, Tennessee.

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.

Latest Chemicals and Eastman Chemical Company, Westlake Corporation Stock News

As of July 31, 2026, Eastman Chemical Company had a $8.0 billion market capitalization, compared to the Chemicals median of $3.7 million. Eastman Chemical Company’s stock is up 9.6% in 2026, up 2.6% in the previous five trading days and down 4.74% in the past year.

Currently, Eastman Chemical Company’s price-earnings ratio is 20.3. Eastman Chemical Company’s trailing 12-month revenue is $8.6 billion with a 5.0% net profit margin. Year-over-year quarterly sales growth most recently was -4.9%. Analysts expect adjusted earnings to reach $6.333 per share for the current fiscal year. Eastman Chemical Company currently has a 4.8% dividend yield.

As of July 31, 2026, Westlake Corporation had a $9.0 billion market cap, putting it in the 76th percentile of all stocks. Westlake Corporation’s stock is down 4.7% in 2026, down 4.5% in the previous five trading days and down 11.49% in the past year.

Currently, Westlake Corporation does not have a price-earnings ratio. Westlake Corporation’s trailing 12-month revenue is $11.0 billion with a -14.9% net profit margin. Year-over-year quarterly sales growth most recently was -6.8%. Analysts expect adjusted earnings to reach $3.181 per share for the current fiscal year. Westlake Corporation currently has a 3.0% dividend yield.

How We Compare Eastman Chemical Company and Westlake Corporation Stock Grades

Stock evaluation requires access to huge amounts of data and the knowledge and time to sift through it all, make sense of financial ratios, read income statements and analyze recent stock movements. AAII created A+ Investor, a robust data suite that condenses data research in an actionable and customizable way suitable for investors of all knowledge levels, to help investors streamline and work through such data.

AAII’s proprietary stock grades come with A+ Investor. These offer intuitive A‐F grades for each of five key investing factors: value, growth, momentum, earnings estimate revisions and quality. Here, we’ll take a closer look at Eastman Chemical Company and Westlake Corporation’s stock grades to see how they measure up against one another.

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Eastman Chemical Company and Westlake Corporation Stock Value Grades

Company	Ticker	Value
Eastman Chemical Company	EMN	C
Westlake Corporation	WLK	A

Successful stock investing involves buying low and selling high, so stock valuation is an important consideration for stock selection.

Buying stocks that are going to go up typically means buying stocks that are undervalued in the first place, although momentum investors may argue that point.

AAII’s A+ Investor Value Grade derives from a stock’s value score. The Value Score is the percentile rank of the average of the percentile ranks of the price-to-sales ratio, price-earnings ratio, enterprise-value-to-EBITDA (EV/EBITDA) ratio, shareholder yield, price-to-book-value ratio and price-to-free-cash-flow ratio. The score is variable, meaning it can consider all six ratios or, should any of the six ratios not be valid, the remaining ratios that are valid. To be assigned a Value Score, stocks must have a valid (non-null) ratio and corresponding ranking for at least two of the six valuation ratios.

Stocks with a Value Score from 81 to 100 are considered deep value, those with a score between 61 and 80 are a good value and so on.

Eastman Chemical Company has a Value Score of 60, which is Average. Westlake Corporation has a Value Score of 90, which is Deep Value.

The Value Stock Winner: Westlake Corporation

As you can clearly see from the Value Grade breakdown above, Westlake Corporation is considered to have better value than Eastman Chemical Company. For investors who focus solely on a company’s valuation, Westlake Corporation could be a good stock to add to their portfolio. However, it’s important for investors to analyze multiple factors based on a wide range of metrics before deciding whether to buy.

Eastman Chemical Company and Westlake Corporation’s Momentum Grades

Company	Ticker	Momentum
Eastman Chemical Company	EMN	D
Westlake Corporation	WLK	D

Momentum grades help to uncover stocks experiencing anomalously high rates of return; research finds that stocks with high relative levels of momentum tend to outperform, whereas those with low levels of momentum tend to continue underperforming. Momentum is based on the price change of a stock over a specified period relative to all other stocks.

Typically, AAII looks at the weighted relative strength over the trailing four quarters. The weighted four-quarter relative strength rank is the relative price change for each of the past four quarters. The most recent quarterly price change is given a weight of 40% and each of the three previous quarters are given a weighting of 20%.

Eastman Chemical Company has a Momentum Score of 34, which is Weak. Westlake Corporation has a Momentum Score of 24, which is Weak.

The Momentum Stock Winner: No Clear Winner

Neither Eastman Chemical Company or Westlake Corporation has a strong enough Momentum Grade to be considered a “winner.” Investors considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Eastman Chemical Company or Westlake Corporation is the better investment when it comes to momentum.

Eastman Chemical Company and Westlake Corporation’s Estimate Revisions Grades

Company	Ticker	Earnings Estimate
Eastman Chemical Company	EMN	C
Westlake Corporation	WLK	D

Earnings estimate revisions scores consider the magnitude of a company’s earnings surprise in its last two reported fiscal quarters. Often, positive surprises beget further positive surprises‐or at least continued sales growth (the exact opposite is generally true, too).

Estimate revisions offer an indication of what analysts are thinking about the short-term prospects of a firm. Estimate revisions are based on the statistical significance of a firm’s last two quarterly earnings surprises and the percentage change in its consensus estimate for the current fiscal year over the past month and past three months.

Eastman Chemical Company has a Earnings Estimate Score of 53, which is Neutral. Westlake Corporation has a Earnings Estimate Score of 34, which is Negative.

The Earnings Estimate Revisions Stock Winner: No Clear Winner

Neither Eastman Chemical Company or Westlake Corporation has an Earnings Estimate Revisions Grade that could be considered a “winner.” Investors considering these companies should do additional due diligence and research to see if either could be a good addition to their portfolios. It’s important to look at a wide range of financial metrics in order to determine if Eastman Chemical Company or Westlake Corporation is the better investment when it comes to estimate revisions.

Other Eastman Chemical Company and Westlake Corporation Grades

In addition to Value, Momentum and Estimate Revisions, A+ Investor also provides grades for Growth and Quality.

Growth investing builds on the idea that stocks of companies exhibiting strong, consistent and prolonged growth outperform those of slower-growth companies. AAII measures growth through consistency of annual sales growth, five-year sales growth rankings adjusted for extreme levels, and consistency of positive annual cash from operations.

AAII’s A+ Investor Quality Grade comes from the ranking of key metrics. Specifically, the quality grade is the percentile rank of the composite of return on assets (ROA), return on invested capital (ROIC), gross profit relative to assets, buyback yield, change in total liabilities to assets, accruals, Z double prime bankruptcy risk (Z) score and F-Score.

These 2 key factors, when combined with the above, provide a holistic view into a particular stock. Further, by joining A+ Investor you can see whether Eastman Chemical Company and Westlake Corporation pass any of our 60+ stock screens that have outperformed the market since their creation.

So, Which Is the Better Investment, Eastman Chemical Company or Westlake Corporation Stock?

Overall, Eastman Chemical Company stock has a Value Score of 60, Momentum Score of 34 and Estimate Revisions Score of 53.

Westlake Corporation stock has a Value Score of 90, Momentum Score of 24 and Estimate Revisions Score of 34.

Comparing Eastman Chemical Company and Westlake Corporation’s grades, scores and metrics can act as a solid basis to determine whether they may be a good investment or not. You’ll also want to look at your portfolio’s asset allocation as well as your risk tolerance and financial goals to see if either of these stocks would make a good fit for you. AAII can help you figure out which investments align with your individual needs and preferences.

Investors are encouraged to do their own due diligence and research. In this way, individuals can effectively become managers of their own assets‐without having to rely on others for financial independence. You can count on AAII for timeless articles on financial planning and stock-picking, unbiased research and actionable analysis.

A+ Investor adds to our qualitative teaching with a powerful data suite to help you whittle down investment choices to find stocks, exchange-traded funds (ETFs) or mutual funds that meet your needs.

AAII Disclaimer

We make no representations or warranties that any investor will, or is likely to, achieve profits similar to those shown, because past, hypothetical or simulated performance is not necessarily indicative of future results. Before making an investment decision, you should consider your circumstances and whether the information on our content is applicable to your situation. This information was prepared in good faith, and we accept no liability for any errors or omissions. The full disclaimer can be read here.