Westlake (WLK) Stock Fundamentals, Analysis & Risk Signals

Health score, price, valuation, risk signals, and key metrics at a glance.

Westlake

NYSE•Basic Materials•Specialty Chemicals

$70.66+0.64(0.01%)Pre-market

Market Cap

$8.84B

P/S

0.8x

P/B

1.0x

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.

How this company scores

AverageMetricSide Score: 41/100

Strongest: Balance Sheet & Red Flags (12/25); weakest: Growth (7/25).

Profitability11/25

Growth7/25

Balance Sheet & Red Flags12/25

Cash & Earnings Quality11/25

Strengths

Long cash runwayCash-backed earningsImproving marginsNo share dilution

Valuation vs. 5-year range

Today's multiple positioned against its own trailing range — a visual premium/discount check.

P/E · 33.1x5y range 4.1x – 197.3x

Currently above its 15-quarter median.

P/S · 0.8x5y range 0.7x – 1.6x

Currently below its 20-quarter median.

P/B · 1.0x5y range 0.9x – 1.9x

Watch items

Data-driven signals worth keeping an eye on across the last 8 quarters

High Risk

Margin Pressure

Red Flag

Operating margins dropped 1588.7% over recent quarters — a sharp decline suggesting serious cost or pricing challenges.

Earnings Quality

Red Flag

Free cash flow has been negative in 5 of the last 8 quarters — earnings are not translating to cash.

Price & Volume

Market Cap $8.84B

Metrics at a Glance

as of June 2026

Revenue & Profit

Revenue, EBITDA, operating income, net income, EPS, and shares

TTM Revenue: $11.29B
Q. Revenue: $3.27B
TTM EBITDA: $-75.00M
TTM Op. Income: $-1.25B
Q. Op. Income: $364.00M
TTM Net Income: $-1.24B
Q. Net Income: $260.00M
EPS: $2.02
Shares Out.: $128.04M

$11.29B in TTM revenue declined 4.0% YoY, reaching $3.27B last quarter. TTM EBITDA of $-75.00M and TTM operating income of $-1.25B show growth is flowing through to the bottom line. However, net income is negative at $1.24B — growth is not yet reaching the bottom line. Over the past year, TTM revenue is down 4% — an improving trend.

Margins

Gross, EBITDA, operating, and net margin trends

Gross Margin: 19.9%
EBITDA Margin: 19.9%
Op. Margin: 11.1%
Net Margin: 7.9%

Op. margin of 11.1% is up 14.8% YoY — cost efficiency is improving. Net margin at 7.9% and gross margin of 19.9% show how much of each revenue dollar survives to profit. Across the last 8 quarters, operating margin has risen for 3 consecutive quarters — an improving trend.

Price Ratios

P/E, P/S, P/B, EV/EBITDA, FCF yield, and earnings yield

P/E Ratio: N/A
P/S Ratio: 0.8x
P/B Ratio: 1.0x

P/S of 0.8x and P/B of 1.0x. P/S is low relative to typical market levels. Over the past year, P/E is up 0% — a weakening trend.

Assets & Liabilities

Total assets, cash, debt, book value, and leverage

Total Assets: $19.44B
Cash: $1.64B
Long-Term Debt: $5.07B
Book Value: $8.71B
D/E Ratio: 0.6
Debt/EBITDA: 7.8

With $19.44B in assets and $5.07B in long-term debt, D/E is 0.6and book value is $8.71B — a conservative capital structure with a cushion to weather downturns. Over the past year, debt/equity is up 29% — an improving trend.

Cash Flow

Operating cash flow, free cash flow, FCF margin, and earnings quality

Op. Cash Flow: $318.00M
TTM Free Cash Flow: $-265.00M
FCF Margin: -2.3%
FCF / Net Income: 0.2

TTM FCF of $-265.00M on $318.00M in operating cash flow. The FCF / Net Income ratio of 0.2x means cash covers only part of net income — earnings quality needs attention. Across the last 8 quarters, free cash flow has risen for 2 consecutive quarters — an improving trend.