Westlake Corporation (WLK) Stock Price & How to Invest

Westlake Corporation runs two segments. Performance and Essential Materials (PEM) is the commodity side: chlor-alkali and vinyls (chlorine, caustic soda, PVC resin), olefins (ethylene, polyethylene, styrene), plus epoxy and specialty chemicals sold into packaging, pipe, coatings and wind blades. Housing and Infrastructure Products (HIP) is the downstream side: PVC pipe and fittings, siding, trim, windows, decking and roofing sold to builders, distributors and big-box retail, much of it built on resin Westlake makes itself. That vertical integration is the whole design idea. The company captures margin at both the molecule and the finished-product stage, which softens (though never removes) the swing when resin prices move. The Chao family controls roughly 72% of the shares through family entities, so public holders own a minority float in a founder-controlled company.

The investment picture in August 2026 is a recovery story with an ugly recent baseline. 2025 was bad: net sales fell to about $11.2 billion and the company posted a net loss of roughly $1.5 billion, most of it non-cash, including a ~$727 million goodwill write-off on North American chlorovinyls and ~$393 million of charges to shut three chlorovinyls plants and a styrene plant. That capacity closure is also the setup for 2026. Second-quarter 2026 net sales came in around $3.27 billion with EBITDA of roughly $679 million, double the prior-year quarter, and EPS of about $2.01 versus a small loss a year earlier. PEM swung from a ~$188 million operating loss to ~$185 million of operating income as average selling prices rose about 14% year over year, helped by higher crude prices lifting polyethylene and PVC, and by lower natural gas and ethane input costs. HIP held a ~22% EBITDA margin on ~$1.25 billion of sales with double-digit pipe and fittings volume growth tied to infrastructure and data-center construction, even with new residential construction still soft. The stock jumped roughly 15% on the print but still sits far below its 52-week high, which is the tension: the earnings inflection is real, and so is the question of how much of it is durable cost work versus a temporary oil-driven price spike.

The single biggest risk is that Q2 2026 was a price spike, not a floor: PEM's margin expansion was driven substantially by oil prices elevated on Middle East conflict, and if crude retreats while global PVC and polyethylene capacity stays long, the spread compresses fast. Natural gas is the other side of the same coin, and Q1 2026 showed the damage a North American gas spike can do (roughly $45 million of EBITDA impact in PEM in a single quarter). Housing exposure is real and currently unhelpful: new residential construction is weak, and HIP volumes have been carried by infrastructure and data-center work that management flagged may have pulled some third-quarter demand into the second. Legal and restructuring costs are a live line item rather than history, including a $67 million settlement disclosed in April 2026 in the PVC pipe antitrust class actions, with related cases continuing against other defendants. Finally, governance is concentrated: the Chao family holds roughly 72% of the stock, so minority holders have limited influence over capital allocation, and the trailing twelve-month loss of about $1.2 billion means conventional trailing earnings multiples do not compute at all right now.

15 analysts publish price targets on WLK, averaging $96.00 against a $80.63 price as of August 2026, or +19.1%. The published targets run from $85.00 to $114.00, a moderate spread, and the ratings split 6 buy, 9 hold, 0 sell. Over the last six months there have been 0 raises and 10 cuts among the published actions. A price target is what an analyst published on a date, not a prediction, and sell-side ratings skew positive across the whole market.

Read the full WLK forecast and price target for the target table, the recent rating actions by firm, and how the consensus has shifted.

We give no verdict on Westlake Corporation. Both cases are real, which is why the question is contested at all, so here is the strongest version of each.

The case for buying. The three-pillar self-help program. Management's stated target is about $600 million of annual operating income benefit from operational excellence, commercial optimization and portfolio pruning (the plant shutdowns). The most optimistic published target, $114.00, assumes this works close to its best case.

The case against. The single biggest risk is that Q2 2026 was a price spike, not a floor: PEM's margin expansion was driven substantially by oil prices elevated on Middle East conflict, and if crude retreats while global PVC and polyethylene capacity stays long, the spread compresses fast. The most pessimistic target, $85.00, is roughly what WLK is worth if this bites instead.

Read the full bull and bear case on WLK, including what would have to change to break either one. Walnut is not an investment adviser.

A simple financial snapshot. These are approximations and refresh quarterly; for current figures see Westlake Corporation's investor relations page or your broker.

• Revenue (TTM): ~$11.3B
• Q2 2026 net sales / EBITDA: ~$3.27B / ~$679M
• Q2 2026 EPS (diluted): ~$2.01
• Net income (TTM): ~-$1.2B (2025 impairments)
• Market cap: ~$10.3B
• Forward P/E / dividend yield: ~22x / ~2.6%

Trailing earnings are negative because of the 2025 write-downs, so the trailing P/E is meaningless and the market is pricing off forward estimates at roughly 22 times, plus about 4 times EV to a normalizing EBITDA run rate if the second-quarter pace held. The share count is about 128 million and the stock trades near $80 against a 52-week range of roughly $56 to $124, so it has bounced hard off the low without recovering the high. Cyclical chemical names look expensive on trough earnings and cheap on peak earnings, which is exactly the inversion to keep in mind here.

Other names that sit close to WLK: same theme, named as a direct competitor, or held beside it in the same funds. Each entry says which. Worth a look if you are thinking about diversification within a thesis rather than concentration on one ticker.

There are three common ways to get WLK exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it, which spreads the position across many companies. Or build it into a focused thematic portfolio, so WLK sits alongside other stocks that express the same thesis.

Walnut takes the portfolio route. Describe a thesis where WLK fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.

New to this? Start with how to invest in stocks, see how to analyze a stock with AI, or compare the best AI stock analyzers.

Westlake is a self-supplied vinyls producer whose earnings swing with the petrochemical cycle and US housing, and whose 2026 recovery so far rests on higher resin pricing plus a self-help program the company says is worth about $600 million a year.

Whether WLK is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, what would have to go right, and the risks in is WLK a buy or a sell?, and where the stock could go from here in the WLK stock forecast.

For income investors, whether WLK pays a dividend and how the payout looks is covered in does WLK pay a dividend? And to weigh WLK against a peer, read the full side-by-side comparisons: WLK vs OXY and WLK vs OLN.