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Westlake Chemical Corporation (WLK) fair value: what the stock is really worth

As of Nov 4, 2026: fair value (intrinsic value) of Westlake Chemical Corporation stock $66.02, price $67.90, that is 2.8% below the price, quality 36 out of 100. Rating: fairly valued. Calculated from audited financials with one of our 26 valuation models and 37 quality factors, updated daily.

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Basic Materials US

WC Westlake Chemical Corporation logo Thin data Nov 4, 2026

Westlake Chemical Corporation

WLK · US
Fairly valued, weak quality

The stock costs about what our calculation considers fair.

Positive coverage
Fair value $66.02 · Fairly valued (−2.8%)
Moderate debt
3.1% dividend yield · Watch coverage
Mixed vs. peers (6/13)
Insiders sold $3.1M (6M)
Profit last quarter 62% below a year ago.
Quality 36/100
Weak Growth (revenue 3y −10.9 %/yr in USD)
Loss-making · -10.9% net margin (TTM) · excl. goodwill write-downs -4.5%
Negative free cash flow
Narrow moat 22/100 · thin data
Thin data
⟳ Cyclical
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What runs behind every stock

26 valuation models 8 families, DCF to NCAV 37 quality factors margins, balance sheet, cashflow, debt 6 AI factors moat, what no ratio measures 2,000+ data points verified, per stock, median

69 individual criteria per stock, every one traceable See the method →

Price vs Fair Value

$154.42 $55.28 Fair Value $66.02 Aug 2021 Nov 2026

White line = price, green steps = our fair value per fiscal year. As of Nov 4, 2026.

How to read this chart

60‑month range $55.28 – $154.42 · fair‑value band $49.26 – $98.54 · the $67.90 price screens above the $66.02 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Nov 4, 2026.

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Company profile

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.

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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 $67.90, while our model-based Fair Value estimate is $66.02, so the stock looks roughly fairly valued today (gap 2.8%).

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Valuation

How firm this estimate is: it rests on 1 models at a data quality of 92/100, which puts the data coverage at low.

Scenario range: $49.26 (bear) to $98.54 (bull), the price of $67.90 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 36/100 (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 $8.7B Mid · P/S ratio 0.73 · EPS (TTM) $−9.64 · Dividend yield 3.1% · Net margin −10.9% · Return on equity −11.9% · Return on assets (EBIT) 6.0% · Operating margin 11.2%.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 22 out of 100 (low confidence).

What moves the price

The share trades about 45% below its 52-week high and 23% above its 52-week low, currently below its 200-day average.

For context, the median of 10 Basic Materials peers we cover trades at −44% fair-value upside, at −3%, WLK screens cheaper than that median.

Fair Value models

Bear $49.26 Fair Value $66.02 Bull $98.54
Price $67.90 · Downside -2.8%
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above starts from their evidence-weighted blend, not from a single model. In cyclical trough or peak years, after dilution or a stock split it is adjusted afterwards, so it can sit above or below the models. 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. If a model's bull case is above four times its base value, the table shows that limit with a > sign (like the overall Bull above): beyond it no assumption holds. Coverage ⓘCoverage = 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.
Best data coverage
NCAV (Graham) $24.63 $33.01 $49.27 54
All 1 models by family
Asset-Based
NCAV (Graham) $24.63 $33.01 $49.27 54

The fair value above starts from this blend and is adjusted for a cyclical trough year.

Open the full fair value analysis →

Quality Score breakdown

Overall quality 36/100

It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.

Profitability 8
How much profit the company makes from its sales and capital
Quality Growth 7
Are margins and returns getting better?
Cashflow 9
Do the profits arrive as real cash?
Financial strength 50
Debt, balance sheet and risk of trouble
Investment 87
Does it invest with discipline instead of growing at any price?
Low Volatility 62
How calm the share price moves, does not count
Price momentum 21
Price momentum of the last 3 to 12 months, does not count
Near the 52-week high 27
Distance to the 52-week high, does not count
New shares 83
Buys back shares or issues new ones?

Open the full quality analysis →

Insider trades

In the last 6 months, one officer or director sold shares worth $3.1M and none bought.

  • SaleAlbert ChaoExecutive Chairman, Director2× since Dec 22, 2025: 79,709 shares, avg. $76.85$6.1MAug 11, 2026
  • SaleRobert F. BuesingerEVP, PEM Segment Head4,000 shares at $115.25$461,000Mar 27, 2026
  • SaleMark Steven BenderEVP & CFO2× since Feb 27, 2026: 33,822 shares, avg. $106.56$3.6MMar 27, 2026

Plus 11 other filings such as grants, option exercises or tax withholding. They are not market purchases or sales.

Sales are often planned (taxes, diversification, 10b5-1 plans). Purchases with their own money are seen as the stronger sign. For information only: not part of the quality score or Fair Value.

Source: SEC Form 4, as of Nov 5, 2026. All filings at the SEC ↗

Revenue & earnings trend

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%
Start year 2020 (pandemic). Over 10 years: +9.6% a year
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%
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
not computed

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Recent news

News mood ⓘNews mood, the average tone of recent news (94 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.
Note from the team Oct 11, 2026
AI conclusion: Westlake's shift to larger lower-cost PVC facilities offers a path to stronger profitability, yet weak net income, negative ROE and free cash flow remain the core limitations.
Main risk: Softer demand and pricing in chemicals threatens to erode the company's margins despite ongoing production optimizations.
Westlake is shifting its European PVC production away from a smaller higher-cost site toward larger lower-cost facilities. The move should strengthen profitability over time even as the company faces softer demand and pricing in chemicals. Our models see the shares as undervalued. Will the efficiency gains from this optimization protect margins better than the broader market weakness erodes them?
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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 · 727 stocks

Beats the industry median on 6/12 measures
A mixed picture versus its industry peers.
Valuation
Quality Score 36 · Bottom 25%
Fair Value upside −2.8% · Above median
Profitability
Return on assets −7.6% · Bottom 25%
Net margin (12 months) −10.9% · Bottom 25%
Operating margin (12 months) 11.2% · Above median
Growth and dividend
Revenue growth (quarter YoY) 10.8% · Below median
Dividend yield (12 months) 3.1% · Top 25%
Balance sheet
Debt / equity 0.58× · Highest 25%

Valuation Multiplesvs Specialty Chemicals median · lower = cheaper

P/B 0.99× · Cheaper than median
P/S (12 months) 0.77× · Cheaper than median
EV/EBITDA 9.9× · Cheaper than median
PEG 1.70× · Pricier than median

Strength profile in five axes (Snowflake)

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE (fair-value potential)30 · sector 0
FUTURE (revenue growth)54 · sector 67
PAST (return on equity)0 · sector 27
HEALTH (low debt)71 · sector 95
DIVIDEND (yield)62 · sector 30

Context: sector, industry, market

Values & ESG

Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.

None of the checked exposures detected

Similar stocks

10 more Specialty Chemicals stocks, each showing price versus our Fair Value estimate.

Stock Price Fair Value vs Fair Value Compare
Nan Ya Plastics Corporation 1303 249.00 TWD 398.40 TWD +60% vs WLK
Wanhua Chemical Group 600309 ¥73.58 ¥68.03 −8% vs WLK
Linde plc LIN $524.74 $446.62 −15% vs WLK
PPG Industries, Inc PPG $127.27 $77.68 −39% vs WLK
DSM-Firmenich AG DSFIR CHF 103.20 CHF 57.82 −44% vs WLK
Sika AG SIKA CHF 188.75 CHF 98.89 −48% vs WLK
The Sherwin-Williams Company SHW $363.50 $146.37 −60% vs WLK
Givaudan SA GIVN CHF 4,105 CHF 1,554 −62% vs WLK
EMS-CHEMIE HOLDING AG EMSN CHF 859.50 CHF 284.63 −67% vs WLK
Ecolab Inc ECL $315.01 $96.56 −69% vs WLK

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Westlake Chemical Corporation: fair value per Fair Value Calculator

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 Nov 4, 2026, our model estimates a fair value of $66.02 versus a price of $67.90, about 3% lower (fairly valued).
What is the fair value of WLK?
Our model-based fair value for Westlake Chemical Corporation is $66.02 (as of Nov 4, 2026), built from audited fundamentals. The current price: $67.90.
What is the quality score of WLK?
Westlake Chemical Corporation has a Quality Score of 36/100. 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 $66.02 (as of Nov 4, 2026) from 1 valuation models. Cautious scenario $49.26, optimistic scenario $98.54. 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 $66.02, about 3% lower versus a price of $67.90 (fairly valued). Cautious scenario $49.26, optimistic scenario $98.54. 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 $11.3B (latest available figure, as of Nov 4, 2026).
Does Westlake Chemical Corporation pay a dividend?
Westlake Chemical Corporation currently shows a dividend yield of 3.12% relative to its recent price (as of Nov 4, 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 $66.02 per share (as of Nov 4, 2026), against a price of $67.90. It is the blended result of 1 valuation models (cash flow, earnings, asset, dividend).
Is Westlake Chemical Corporation stock overvalued or undervalued in 2026?
As of Nov 4, 2026, WLK trades above its calculated fair value: price $67.90, fair value $66.02, a gap of about −3% (fairly valued). 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 ($67.90); the fair value is what the company's own numbers justify ($66.02). For Westlake Chemical Corporation the two are $1.88 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 $8.7B (market capitalisation, as of Nov 4, 2026). Per share that is $67.90; our models calculate a fair value of $66.02 per share.
What do the bullish and bearish scenarios say about WLK?
Our models span a range for Westlake Chemical Corporation: cautious scenario $49.26, base $66.02, optimistic $98.54 per share (as of Nov 4, 2026, price $67.90). 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 Nov 4, 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 Nov 4, 2026): return on equity −11.9%, debt of 0.58 per unit of equity. They feed the Quality Score of 36/100, which measures business quality independently of the share price.
How far is WLK from its 52-week high?
Westlake Chemical Corporation trades at $67.90, about 45% below its 52-week high of $122.65 and 23% above the low of $55.28 (as of Nov 4, 2026). Distance from the high says nothing about value: that is what the fair value of $66.02 is for.
Which stocks are comparable to Westlake Chemical Corporation?
From the same area (Basic Materials) we also value Linde plc, Ecolab Inc, The Sherwin-Williams Company, Nan Ya Plastics Corporation, 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 Nov 4, 2026: price $67.90, calculated fair value $66.02 (−3%), Quality Score 36/100, from 1 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 1 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 $66.02, 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 15.5% above its aggregate fair value. Westlake Chemical Corporation itself currently trades above fair value. 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 Nov 4, 2026 was $67.90. Our model-based fair value is $66.02, about 3% lower (fairly valued). 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 price sits close to our fair value, market and models broadly agree here, little valuation tension. A fairly wide model range ($49.26 to $98.54) leaves room in how you read the outcome. 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 $8.7B. 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 0.73 (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 $−9.64. 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 −10.9% (last twelve months). 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 −11.9% (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 11.2% (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 +10.8% 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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