Westlake Chemical Corporation (WLK) fair value: what the stock is really worth
We calculate from audited financials what Westlake Chemical Corporation is really worth. The fair value tells you whether the price is too high or too low, the quality score (0 to 100) how solid the business behind it is. 26 models, 37 quality factors, updated daily.
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Price vs Fair Value
White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Sep 18, 2026.
How to read this chart
60‑month range $55.28 – $154.42 · fair‑value band $39.72 – $136.56 · the $69.07 price screens below the $84.18 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Sep 18, 2026.
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.
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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.
Stock analysis
Westlake Chemical Corporation (WLK) currently trades at $69.07, while our model-based Fair Value estimate is $84.18, implying the stock looks roughly 18.0% undervalued today.
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Valuation
Bull case: the Asset-Based group reads highest at a median of $45.98 per share, and 0 of the 3 models we run sit above the $69.07 price.
Bear case: the Dividend Discount group reads lowest at $32.11, and 3 of the 3 models stay below the price. Evidence for this calculation is low.
Scenario range: $39.72 (bear) to $136.56 (bull), the price of $69.07 sits inside it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.
Quality & growth
The Quality Score stands at 37/100 (below-average quality), in the Basic Materials sector.
Weak Growth: Revenue growth is inconsistent: the periods point in different directions, so there is no trend to rely on.
Westlake Chemical Corporation reported revenue of $11.2B in FY2025 versus $11.8B in FY2021, a compound −1.3%/yr. Reported net income was −$1.5B in FY2025.
Key figures
Market cap $9.9B · P/S ratio 0.91 · EPS (TTM) $−12.70 · Dividend yield 3.1% · Net margin −13.5% · Return on equity −16.0% · Return on assets (EBIT) 6.0% · Operating margin −5.8%.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 42 out of 100 (low confidence).
What moves the price
The share trades about 44% below its 52-week high and 25% above its 52-week low, currently below its 200-day average.
For context, the median of 10 Basic Materials peers we cover trades at −53% fair-value upside, at 22%, WLK screens cheaper than that median.
Fair Value models
Bear $39.72Fair Value $84.18Bull $136.56
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above is their evidence-weighted blend, not the output of a single model.Bear ⓘBear = the cautious scenario: the same model computed with conservative anchors (lower growth, margins and valuation multiples). Together with Bull it frames a plausible valuation range, not a price target.BaseBull ⓘBull = the optimistic scenario: the same model computed with favourable anchors (higher growth, margins and valuation multiples). Together with Bear it frames a plausible valuation range, not a price target.Evidence ⓘEvidence = how well-backed THIS model's estimate is for this stock (0–100): how complete and reliable its input data are, and how well the model fits the company. The final Fair Value is an evidence-weighted blend, so better-evidenced models count more. Green ≥70, amber 50–69, grey below 50.
Growth Quality ⓘGrowth is valuable only when reinvestment earns attractive returns (Aswath Damodaran): sustainable growth depends on return on capital, reinvestment and efficiency. Basis: total company revenue over the periods shown on the cards (3Y/5Y/all years), not per share, so a merger can show up as a growth jump; per-share earnings growth is in the value-creation card.25/100
Revenue growth is inconsistent: the periods point in different directions, so there is no trend to rely on.
Revenue growth 1 year
−8.0%
Revenue growth 3 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
−10.9%
Revenue growth 5 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+8.3%
Revenue growth 26 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+9.5%
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Profit margin (trend) ⓘOperating margin then vs now, from reported annual statements. A falling margin after a boom year is the classic peak-earnings signal: the growth rate then leans on an inflated base.
5.7% (2020) → −14.1% (2025)
What shareholders gained per year ⓘWe only publish this rate when it is defensible. Reason: fiscal 2025 is a loss year, no rate is defined from a loss
News mood ⓘNews mood, the average tone of recent news (93 articles), rated against how stocks are usually covered. 🚀 Hype = unusually upbeat · 🙂 Positive = above average · 😐 Neutral = typical · 🙁 Negative = below average · 😨 Very negative = unusually downbeat. It reflects the tone of coverage, not our valuation.Positive
Recent news coverage is more positive than average.
Compare Westlake Chemical Corporation with another stock
Price, fair value, quality and upside side by side.
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Peer GroupⓘHow this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.Specialty Chemicals · 709 stocks
Beats the industry median on 4/12 measures
Overall it trails its industry peers.
Valuation
Quality Score36 · Bottom 25%
Fair Value upside+13% · Above median
Profitability
Return on assets−1% · Bottom 25%
Net margin (TTM)−15% · Bottom 25%
Operating margin (TTM)−6% · Bottom 25%
Growth and dividend
Revenue growth−7% · Bottom 25%
Dividend yield (TTM)3.1% · Top 25%
Balance sheet
Debt / equity0.58× · Highest 25%
Valuation Multiplesvs Specialty Chemicals median · lower = cheaper
For bloggers, editors and developers: paste this into your site or blog (a “Custom HTML” block in WordPress), it shows the current fair value and links back here. Free, plain HTML, and welcome. Full data streams (CSV/JSON) at /developers.
Cite: Fair Value Calculator (2026). "Westlake Chemical Corporation Fair Value". https://www.fairvalue-calculator.com/stock/WLK
Frequently asked questions
Is Westlake Chemical Corporation (WLK) overvalued or undervalued?
As of Sep 18, 2026, our model estimates a fair value of $84.18 versus a price of $69.07, about +22% upside (undervalued).
What is the fair value of WLK?
Our model-based fair value for Westlake Chemical Corporation is $84.18 (as of Sep 18, 2026), built from audited fundamentals. The current price: $69.07.
What is the quality score of WLK?
Westlake Chemical Corporation has a Quality Score of 37/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the price target for Westlake Chemical Corporation (WLK)?
Our model-based price target is the fair value of $84.18 (as of Sep 18, 2026) from 3 valuation models. Cautious scenario $39.72, optimistic scenario $136.56. It is a calculation from audited fundamentals, not an analyst target.
What is the Westlake Chemical Corporation stock forecast for 2026?
Our models put fair value at $84.18, about +22% upside versus a price of $69.07 (undervalued). Cautious scenario $39.72, optimistic scenario $136.56. The calculation is refreshed regularly with new filings.
What is the revenue of Westlake Chemical Corporation (WLK)?
Westlake Chemical Corporation reported trailing-twelve-month revenue of about $11.0B (latest available figure, as of Sep 18, 2026).
Does Westlake Chemical Corporation pay a dividend?
Westlake Chemical Corporation currently shows a dividend yield of about 3.06% relative to its recent price (as of Sep 18, 2026).
What is the intrinsic value of Westlake Chemical Corporation (WLK)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Westlake Chemical Corporation it is $84.18 per share (as of Sep 18, 2026), against a price of $69.07. It is the blended result of 3 valuation models (cash flow, earnings, asset, dividend).
Is Westlake Chemical Corporation stock overvalued or undervalued in 2026?
As of Sep 18, 2026, WLK trades below its calculated fair value: price $69.07, fair value $84.18, a gap of about +22% (undervalued). The calculation is refreshed with each new quarterly report, so the verdict can change during the year.
Is fair value the same as the market price of WLK?
No. The price is what the market pays today ($69.07); the fair value is what the company's own numbers justify ($84.18). For Westlake Chemical Corporation the two are $15.11 per share apart. That gap is exactly why we show both numbers side by side.
How much is Westlake Chemical Corporation worth?
The market values Westlake Chemical Corporation at about $9.9B (market capitalisation, as of Sep 18, 2026). Per share that is $69.07; our models calculate a fair value of $84.18 per share.
What do the bullish and bearish scenarios say about WLK?
Our models span a range for Westlake Chemical Corporation: cautious scenario $39.72, base $84.18, optimistic $136.56 per share (as of Sep 18, 2026, price $69.07). The range comes from different growth and margin assumptions, not from analyst opinions.
What is the PEG ratio of WLK?
The PEG ratio of Westlake Chemical Corporation is 1.70 (P/E divided by earnings growth, as of Sep 18, 2026). That is above 1, so the growth is already paid for in the price.
How solid is the balance sheet of Westlake Chemical Corporation (WLK)?
Balance-sheet figures for Westlake Chemical Corporation (as of Sep 18, 2026): return on equity −16.0%, debt of 0.58 per unit of equity. They feed the Quality Score of 37/100, which measures business quality independently of the share price.
How far is WLK from its 52-week high?
Westlake Chemical Corporation trades at $69.07, about 44% below its 52-week high of $123.49 and 25% above the low of $55.23 (as of Sep 18, 2026). Distance from the high says nothing about value: that is what the fair value of $84.18 is for.
Which stocks are comparable to Westlake Chemical Corporation?
From the same area (Basic Materials) we also value Linde plc, The Sherwin-Williams Company, Ecolab Inc, Air Products and Chemicals, Inc, among others. Each of them has its own fair-value calculation on this site using the same models, so the comparison is like for like.
Is Westlake Chemical Corporation stock attractive at the current price?
The data as of Sep 18, 2026: price $69.07, calculated fair value $84.18 (+22%), Quality Score 37/100, from 3 models. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
How is the fair value of WLK calculated?
We run Westlake Chemical Corporation through 3 models from four families: discounted cash flow, earnings models, asset and balance-sheet models, and dividend models. Every model gets the same audited fundamentals; the result is the weighted average of $84.18, with the spread shown as a cautious and an optimistic scenario.
Is it still worth investing in stocks now?
The global stock market currently sits 16.1 % above its aggregate fair value. Westlake Chemical Corporation currently trades 22 % below its own fair value, and the market average says nothing about that. An expensive market is no reason to stay out and no reason to buy everything at once: keep a broad savings plan running, buy single stocks only with money you can do without, and hold part of your money liquid while the market is high. The full picture including sectors is on is it worth investing now.
What is the share price of Westlake Chemical Corporation (WLK)?
The closing price on Sep 18, 2026 was $69.07. Our model-based fair value is $84.18, about +22% upside (undervalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Westlake Chemical Corporation right now?
The model range is unusually wide ($39.72 to $136.56). The outcome hinges heavily on assumptions, so read the point estimate with caution. Evidence is limited here (fewer models, shorter history), so the fair value is a rougher estimate than usual.
Where does the earnings growth of Westlake Chemical Corporation (WLK) come from?
Earnings per share at Westlake Chemical Corporation grew −0.4 % a year from 2014 to 2025. Broken into its drivers: revenue per share +12.5 %, EBIT margin −11.9 %, tax rate +0.4 %, residual (interest, one-offs) +0.1 %. The four rates multiply to the earnings growth rate, they do not add up. Start and end are three-year averages so a single exceptional year does not distort the result.
Key figures of Westlake Chemical Corporation
How large is the market capitalisation of Westlake Chemical Corporation (WLK)?
The market capitalisation of Westlake Chemical Corporation is $9.9B. The stock-market value of the whole company: share price times number of shares. It is what the market asks for the entire business today.
What is the P/S ratio of Westlake Chemical Corporation (WLK)?
The price-to-sales ratio of Westlake Chemical Corporation is 0.91 (last twelve months). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What are the earnings per share of Westlake Chemical Corporation (WLK)?
Earnings per share at Westlake Chemical Corporation are $−12.70. Earnings per share over the last twelve months: total profit spread across every single share.
What is the dividend yield of Westlake Chemical Corporation (WLK)?
The dividend yield of Westlake Chemical Corporation is 3.1%. Yearly dividend relative to the share price. 3% pays 3 per 100 invested. Below: how much of profit is used for it.
What is the net margin of Westlake Chemical Corporation (WLK)?
The net margin of Westlake Chemical Corporation is −13.5% (fiscal year 2025). How much of every unit of revenue ends up as profit. 10% means 10 cents of profit per dollar of sales.
What is the return on equity of Westlake Chemical Corporation (WLK)?
The return on equity (ROE) of Westlake Chemical Corporation is −16.0% (last twelve months). Profit relative to shareholders' equity, how efficiently the company works with its owners' money.
What is the EBIT return on assets of Westlake Chemical Corporation (WLK)?
On an EBIT basis the return on assets of Westlake Chemical Corporation is 6.0% (avg 5y). Operating profit (EBIT) relative to everything the company owns, as a multi-year average. It describes the business model rather than one good or bad year.
What is the operating margin of Westlake Chemical Corporation (WLK)?
The operating margin of Westlake Chemical Corporation is −5.8% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Westlake Chemical Corporation (WLK)?
Revenue at Westlake Chemical Corporation is growing −6.8% versus a year earlier (3y avg −10.9%). How much revenue grew versus a year earlier (YoY). The 3-year average next to it puts the single year in context.
How fast are earnings growing at Westlake Chemical Corporation (WLK)?
Earnings per share at Westlake Chemical Corporation are growing −62.3% versus a year earlier. How much earnings per share grew versus a year earlier.
How much free cash flow does Westlake Chemical Corporation (WLK) generate?
The free cash flow of Westlake Chemical Corporation is −$530M (fiscal year 2025). The cash truly left after running and investing in the business, this is what pays dividends and buybacks.
How much net debt does Westlake Chemical Corporation (WLK) carry?
The net debt of Westlake Chemical Corporation is $3.7B (fiscal year 2025). Debt minus cash on hand. The note shows how many years of free cash flow could in theory pay it off.
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Thin data
Sep 18, 2026