• Are you wondering whether Westlake's current share price reflects its true worth, or if the market is missing something important about this chemicals producer's future potential?
• Recently, the stock closed at US$107.03, with returns of 0.8% over 7 days, 10.9% over 30 days, 44.3% year to date, and 2.8% over the past year. These figures may have changed how some investors think about its risk and reward profile.
• Recent coverage of Westlake has focused on its position in basic materials and how investors are weighing its exposure to broader chemicals demand against the valuation being placed on the shares. This context helps frame whether the recent price moves reflect shifting expectations about the business or simply changing sentiment toward the sector.
• Simply Wall St currently gives Westlake a valuation score of 0 out of 6. In the sections that follow we will look at how different valuation methods arrive at that view, before finishing with a perspective that can help you judge the numbers in a more complete way.

Westlake scores just 0/6 on our valuation checks. See what other red flags we found in the full valuation breakdown.

Approach 1: Westlake Discounted Cash Flow (DCF) Analysis

A Discounted Cash Flow, or DCF, model estimates what a company might be worth today by projecting its future cash flows and then discounting those back to a present value. For Westlake, the model used here is a 2 Stage Free Cash Flow to Equity approach, based on cash flow projections in US$.

Westlake’s latest twelve month free cash flow is a loss of $480.99 million. Analysts provide explicit free cash flow estimates out to 2028, with Simply Wall St extrapolating further to build a 10 year path. Within that, projected free cash flow in 2028 is $534.43 million, and the discounted values of the 2026 to 2035 projections are set out in the model data above.

Pulling these projections together, the DCF output suggests an estimated intrinsic value of about $88.10 per share. Against the recent share price of US$107.03, this implies Westlake is about 21.5% overvalued based on this cash flow based approach.

Result: OVERVALUED

Our Discounted Cash Flow (DCF) analysis suggests Westlake may be overvalued by 21.5%. Discover 50 high quality undervalued stocks or create your own screener to find better value opportunities.

Head to the Valuation section of our Company Report for more details on how we arrive at this Fair Value for Westlake.

Approach 2: Westlake Price vs Sales

For companies where earnings can be volatile, the P/S ratio is often a useful cross check because it compares the share price with the revenue the business generates, rather than its bottom line. Investors typically accept a higher P/S ratio when they expect stronger growth or see lower risk, and a lower P/S when growth expectations are more modest or risks are higher.

Westlake currently trades on a P/S ratio of 1.23x. That sits above the Chemicals industry average of 1.02x and also above the peer group average of 0.68x, so on simple comparisons the shares look more expensive than many alternatives in the sector.

Simply Wall St’s Fair Ratio for Westlake is 1.00x. This is a proprietary estimate of what a reasonable P/S might be, given factors such as the company’s earnings growth profile, its industry, profit margins, market value and specific risks. Because it tries to blend all of those elements, it can be more informative than looking only at peers or the industry, which ignore some of the company specific context. With the current P/S at 1.23x versus a Fair Ratio of 1.00x, the shares screen as somewhat expensive on this metric.

Result: OVERVALUED

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Upgrade Your Decision Making: Choose your Westlake Narrative

Earlier we mentioned that there is an even better way to understand valuation, so let us introduce you to Narratives. These are simply your own story about Westlake, linking what you believe about its business to a forecast for revenue, earnings and margins, and then to a fair value that you can easily compare with the current share price.

On Simply Wall St’s Community page, Narratives are available as an easy tool used by millions of investors. Your view of Westlake, for example that future earnings reach $893.8 million by about September 2028 with a P/E of 16.1x or instead $255.7 million by about February 2029 with a P/E of 44.5x, is turned into a transparent fair value that updates as new news or earnings data arrives and helps you judge for yourself whether the price or the value looks more compelling.

For Westlake however we will make it really easy for you with previews of two leading Westlake Narratives:

🐂 Westlake Bull Case

Fair value in this bullish narrative: US$110.43 per share

Implied pricing gap versus the recent US$107.03 close: about 3.1% below this fair value estimate

Revenue growth assumption: 3.68% a year

• This view leans on long term infrastructure and housing demand, with Westlake’s Housing and Infrastructure Products segment seen as a steady contributor through municipal spending and homebuilding needs.
• Analysts in this camp focus on cost reductions, plant closures and footprint optimisation as tools to support margins and cash flow even while chemicals markets remain pressured.
• The narrative also highlights balance sheet strength, vertical integration and potential for M&A in value added and sustainable materials as reasons the business mix could gradually become less cyclical.

🐻 Westlake Bear Case

Fair value in this bearish narrative: US$70.00 per share

Implied pricing gap versus the recent US$107.03 close: about 52.9% above this fair value estimate

Revenue growth assumption: 0.39% decline a year

• This view is cautious about prolonged overcapacity in core chemical chains and weak pricing for PVC, caustic and epoxy, which could keep Performance and Essential Materials margins under pressure.
• It questions how much of the targeted US$600m earnings uplift from cost cuts and footprint changes will actually flow through, given fixed costs, required capex of about US$900m in 2026 and recent net losses.
• The bearish case also flags execution and demand risks around plant closures, housing activity, municipal spending and competitive pipe pricing, all of which could limit earnings recovery and justify a lower fair value.

Do you think there's more to the story for Westlake? Head over to our Community to see what others are saying!

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com

Disclaimer:This article represents the opinion of the author only. It does not represent the opinion of Webull, nor should it be viewed as an indication that Webull either agrees with or confirms the truthfulness or accuracy of the information. It should not be considered as investment advice from Webull or anyone else, nor should it be used as the basis of any investment decision.