Stock

Westlake Corporation

WLK

Chemicals - Specialty · Basic Materials

Also trades as: 0LVK.L GBP 0.64 (+1.72%)

Price

$64.56

+0.42 (+0.65%)

Market Cap

$8.25B

Winston Score

Winston is worried

Weak fundamentals across most pillars.

Data as of Oct 24, 2026 · filings through Jun 30, 2026

§How the score breaks down

Quality

Weak

6/30

Growth

Weak

2/20

Cash Flow

Weak

0/10

Stability

Mixed

3/10

Valuation

Data not available

0/10

Ownership

Good

10/15

Dividends

Mixed

2/5

23 of 100 counted points = Winston Score 23.

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§Winston Score History

The full picture

Westlake Corporation is a large chemical and building products company based in Houston, Texas. It makes two main types of products: basic chemicals like PVC (a plastic used in pipes and packaging) and finished building materials like vinyl windows, siding, and trim for homes. Its customers include construction companies, homebuilders, and manufacturers across North America and beyond.

Westlake earns money by selling both raw chemicals and finished products, giving it two separate revenue streams. It operates primarily in the United States but also has facilities in Europe and Asia, and its scale as one of the larger integrated PVC producers in North America gives it some cost advantages over smaller rivals. However, the negative operating margin and weak returns shown in current financials reflect how sensitive this business is to chemical pricing cycles and slower housing construction activity, which remain the key risks to its near-term performance.

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Growth Profile

For growth stock investors

When traditional metrics don't capture the full picture, these are the signals growth stock investors use instead.

Revenue Growth

+10.8% YoY

YoY Growth Rate

Steady revenue growth

Reported EPS Growth

+283.6% YoY

Quarterly reporting periods ended:

30 Jun 2025: $-1.10

30 Jun 2026: $2.02

Reported/statutory EPS, not adjusted or underlying earnings. One-off items can affect this figure. Provider rounding can affect the growth rate.

YoY Growth Rate

Reported EPS increased year over year

R&D Spend

$0/ year

0.0% of revenue

Below sector average (3%)

Research and development spending

Insider Activity

74.2%ownership

→ Flat

Insider ownership roughly steady over the past year

Cash Position

Cash flow positive

$2.9B cash & investments

Quarterly Free Cash Flow

↓ Burn rate worsening

Company generates more cash than it spends — no dilution risk from fundraising

Growth + cash flow

Westlake Corporation is a rare growth stock that's already generating positive cash flow while growing at 11%. The Winston Score doesn't fully credit this transition from "burner" to "earner."

The Winston Score above measures business quality today. Growth stocks often score lower because they invest in the future rather than maximising current profits. These metrics show what matters most for evaluating that future.

Share count broadly stable

+0.2% over 4y

The share count has stayed roughly flat over this period — little dilution or buyback activity.

Diluted shares outstanding: 128.7M (2021) → 128.9M (2025)

Score breakdown

Every number that matters to educated investors.

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Quality

Profit per sale

Gross Margin

19.9%

Thin — 19.9% gross margin

Profit after running costs

Operating Margin

11.1%

Modest — 11.1% operating margin

Return on the money invested

ROCE

-8.5%

Weak — -8.5% return on capital

Negative ROIC means the business is losing money on every dollar invested in it.

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Growth

Sales growth

Sales YoY

-4.0%

Shrinking sales (-4.0% YoY)

Profit growth

EPS YoY

N/A

Data not available

How steady the profit is

EPS Consistency

2/8 quarters

Earnings rarely grow — volatile business

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Cash Flow

Profit that turns into cash

Cash Conversion

N/A

Data not available

Spare cash per sale

FCF Margin

-2.3%

Burning cash (-2.3%)

Free cash flow is negative. They are burning cash, not generating it.

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Stability

What it owes vs what it owns

Debt / Equity

0.66

Moderate — manageable debt (0.66)

Covers its interest

Interest Cover

N/A

Data not available

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Valuation

Price vs profit

P/E Ratio (TTM)

N/M

Negative earnings — P/E not meaningful

Cheaper or dearer next year

P/E vs Forward

N/A

not available

Data not available

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Dividends

Dividend

Dividend Yield

3.42%

Moderate income — 3.42% yield

Standard yield zone for stable dividend payers. A meaningful piece of total return.

Dividend record

Dividend Growth

+0.9%

Dividend flat

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