Westlake's Competitiveness
A competitive positioning analysis and financial ratio benchmarking of Westlake (WLK) against its publicly traded competitors: sales growth, net income, profitability, valuation and market share, plus each peer's market capitalization, revenue, income and employees. Free below: the top 5 peers. Subscriber access adds the full competitor list and CSV downloads.
Key Findings: Westlake vs Its Competitors
- TTM: Trailing 12-month revenue of 11,294M vs 484,447M combined for its competitors (2.3% combined share).
- Trending: Latest-quarter revenue run-rate is accelerating (+15.8% annualized vs trailing 12 months), vs accelerating (+24.5%) for its tracked peer group.
- Growth: Westlake generated 10.8% revenue growth year over year in Q2 2026, vs 33.0% for its competitors combined.
- Profitability: Its 8.3% net margin compares with 14.0% for the peer group.
- Scale: Westlake ranks #7 of 81 companies by market capitalization in the Chemical Manufacturing industry, holding 1.7% of industry market cap.
- Peer revenue share: Westlake accounted for 2.1% of combined revenue among its tracked peer group, down from 2.5% a year earlier.
- Peer differentiation: Revenue per employee of $0.77M compares with $1.87M for the peer group (0.4x).
- Structure: Westlake operates in the following segments: Performance and Essential Materials, Housing and Infrastructure Products; and reports the following subsidiaries: Westlake Chemical Partners Lp (competes with Lyondellbasell Industries N v , Shell Plc).
Every figure above is sourced and cited in detail further down this page (Market Structure, Profitability & Cost Structure, Productivity vs Peers).
WLK Sales vs. its Competitors, Q2 2026
Westlake reported revenue growth of 10.77 % year on year in Q2 2026, below its competitors' combined revenue growth of 32.99 %.
With a net margin of 8.28 %, Westlake reported lower profitability than its competitors (13.99 %).
Westlake generated 2.12 % of the combined sales of its peer group, down from 2.54 % a year earlier.
Westlake vs. its Competitors, Q2 2026
Revenue growth, year on year
Net margin
Revenue run-rate vs trailing 12 months
TTM net margin
TTM = trailing twelve months. Run-rate annualizes the latest quarter (×4) and compares it to TTM. In millions of $. High-Confidence Competitors are named as a competitor directly in Westlake reports; Similar-Size Competitors are the closest peers by market-cap rank within the same industry; Similar Growth & Profitability Competitors are the closest peers by combined revenue growth, operating margin and ROIC, all independent of the competitor list.
TTM revenue, latest-quarter run-rate and net income/margin benchmarked across Westlake and its 4 competitor groupings. Available under Commercial License.
| Entity | TTM Revenue | Rev Run-rate vs TTM |
|---|---|---|
| Westlake Corporation | $12,345M | +12.3% · Accelerating |
| Competitors combined | $12,345M | +12.3% · Accelerating |
| High-Confidence Competitors (4) | $12,345M | +12.3% · Accelerating |
| Similar-Size Competitors (10) | $12,345M | +12.3% · Accelerating |
| Similar Growth & Profitability (6) | $12,345M | +12.3% · Accelerating |
TTM revenue, run-rate and net margin benchmarking across Westlake's competitor groups requires a Commercial License.
For context: the Chemical Manufacturing industry grew revenue 1.9% year over year, combined, vs 10.8% for Westlake. Westlake's share of combined industry revenue moved from 3.24% to 3.52%, a gain of 0.28 percentage points.
Westlake's Competitor Quality Breadth
Group definitions: see Methodology: Performance Group Definitions.
| Entity | Profitable | Expanding | Above Industry Growth | Distressed |
|---|---|---|---|---|
| Westlake Corporation | No | No | No | No |
| Competitors combined (20) | ||||
| High-Confidence Competitors (9) | ||||
| Similar-Size Competitors (10) | ||||
| Similar Growth & Profitability (8) | 12.50 % (1 of 8) | 37.50 % (3 of 8) | 37.50 % (3 of 8) | 50.00 % (4 of 8) |
Source: CSIMarket API, trailing 12 months. Altman Z-Score is not shown here: it is not populated in the underlying data for any company. Percentages are of companies in each group that report the relevant metric, not of the full group size.
WLK Stock Performance relative to its Competitors
WLK Stock Performance relative to High-Confidence Competitors
WLK Stock Performance relative to Similar-Size Competitors
WLK Stock Performance relative to Similar Growth & Profitability Competitors
5 Best-Performing Tracked Competitors, Trailing 12 Months
| # | Competitor | TTM Share Price Return | vs U.S.A. 500 |
|---|---|---|---|
| 1 | Sasol Limited | 282.9% | Outperformed |
| 2 | Phillips 66 | 282.9% | Outperformed |
| 3 | Ashland Inc | 282.9% | Outperformed |
| 4 | Dow Inc | 282.9% | Outperformed |
| 5 | Occidental Petroleum Corporation | 282.9% | Outperformed |
TTM share price return and U.S.A. 500 outperformance for Westlake's best-performing competitors requires a Commercial License.
Source: CSIMarket API, trailing 12 months.
Westlake's Comment on Competition and Industry Peers
Publicly Traded Peers of Westlake Corporation
Revenue and income for trailing 12 months, in millions of $, except employees| Company | Market Cap | Revenues |
|---|---|---|
 Westlake Corporation |
8,725.19 | 11,294.00 |
 Chevron Corp |
428,593.88 | 215,261.00 |
 Parker hannifin Corporation |
116,595.34 | 21,499.00 |
 Phillips 66 |
103,580.17 | 168,192.00 |
 Occidental Petroleum Corporation |
58,029.43 | 21,671.00 |
 Ppg Industries Inc |
28,406.66 | 16,692.00 |
| SUBTOTAL | 825,027.69 | 556,531.23 |
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Sources: see Methodology: Peer & Competitor Identification, Sourcing.
Updated on:
Focus of this report: publicly traded companies. Ten additional tables on Westlake Corporation versus competitors, including market share analysis, are in the navigation menu under Competition. To download the tables, please subscribe.
Westlake's Competitors Named by the Company
Competitive relationships identified from Westlake reports and corroborating sources, each with a basis and confidence.| Competitor | Basis | Confidence |
|---|---|---|
| Olin Corporation | Company report | 85% |
| Chevron Phillips Chemical Company | Company report | 85% |
| Sasol Limited | Company report | 85% |
| LyondellBasell Industries, N.V. | Company report | 85% |
| The Azek Company Inc | Company report | 85% |
| Formosa Plastics Corporation | Company report | 85% |
| Orbia Advanced Corporation | Company report | 85% |
| Dow Inc. | Company report | 85% |
| Shintech, Inc. | Company report | 85% |
| INOVYN ChlorVinyls Limited | Company report | 85% |
| Oxy Chem, LP | Company report | 85% |
| ExxonMobil Chemical Company | Company report | 85% |
| NOVA Chemicals Corporation | Company report | 85% |
| VYNOVA Group | Company report | 85% |
| KEM ONE Group SAS | Company report | 85% |
| Shell Chemical Company | Company report | 85% |
| Peer Group | Company report | 85% |
| BASF Corporation | Company report | 85% |
| Motiva Enterprises LLC | Company report | 85% |
| Huntsman Corporation | Company report | 85% |
| Dow Inc | Company report | 85% |
| Phillips 66 | Company report | 85% |
| Willis Towers Watson Plc | Company report | 85% |
| Trex Company Inc | Company report | 85% |
| Core Natural Resources Inc | Company report | 85% |
| Nova Ltd | Company report | 85% |
| Celanese Corporation | Company report | 85% |
| Occidental Petroleum Corporation | Company report | 85% |
| Eastman Chemical Co | Company report | 85% |
| Trecora Resources | Company report | 85% |
| Hexion Inc | Company report | 85% |
| Ashland Inc | Company report | 85% |
Company report basis, confidence, active dates and source counts for Westlake's named competitors require a Commercial License.
Methodology: see Methodology: Peer & Competitor Identification, Sourcing.
Westlake's Business Segment Mix vs Peers
Revenue by operating segment or division, as named and reported by each company. Segment names are the filer's own and are not standardized across companies. Do not assume a same-named or similarly-named segment is defined identically between two companies. Shares are of each company's own total revenue and are not required to sum to 100% (intersegment revenue, unallocated items).| Company | Largest Segment |
|---|---|
| Westlake Corporation | Performance and Essential Materials 62.56 % |
| Chevron Corp | Reportable Segment, Aggregation before Other Operating 99.73 % |
| Parker hannifin Corporation | Diversified Industrial 66.93 % |
| Phillips 66 | Refining 70.79 % |
| Occidental Petroleum Corporation | Oil and gas 95.12 % |
| Ppg Industries Inc | Industrial Coatings 40.06 % |
Source: operating segment revenue as reported in each company's reports (10-K/10-Q), via the CSIMarket API, leaf-level reportable segments only (parent roll-up segments are excluded where sub-segments are separately disclosed).
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Westlake's Productivity vs Peers Comparison
Revenue and income per employee, trailing 12 months, in $; market cap in millions of $| Company | Market Cap | Revenue / Employee | Income / Employee |
|---|---|---|---|
| Westlake Corporation | 8,725 | 773,562 | -81,575 |
| Chevron Corp | 428,594 | 5,001,533 | 487,116 |
| Parker hannifin Corporation | 116,595 | 359,215 | 60,969 |
| Phillips 66 | 103,580 | 13,348,571 | 1,003,254 |
| Occidental Petroleum Corporation | 58,029 | 2,081,348 | 702,171 |
| Ppg Industries Inc | 28,407 | 383,724 | 36,368 |
| PEERS TOTAL | 816,303 | 1,866,995 | 160,760 |
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Westlake's Geographic Revenue Exposure vs Peers
Revenue by country/region as reported in each company's most recent report. Disclosure granularity varies by filer (some report by country, others by broad region) and is shown as disclosed.| Company | Largest Market |
|---|---|
| Parker hannifin Corporation | North America 67.21 % |
| Phillips 66 | United States 81.30 % |
| Occidental Petroleum Corporation | Non-US 20.75 % |
| Ppg Industries Inc | North America 33.22 % |
| Dow Inc | U.S.& Canada 40.37 % |
Source: revenue geography as reported in each company's reports (10-K/10-Q), via the CSIMarket API. Percentages are of that company's own total consolidated revenue for its most recent reported period.
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Westlake's Position in Industry Market Structure
Market-capitalization share and concentration across all 76 companies in Westlake's industry classification, broader than the peer set above. Market cap in millions of $.Westlake ranks #7 of 76 companies by market capitalization in its industry, holding 1.66 % of total industry market cap. The industry's Herfindahl-Hirschman Index (HHI) is 2,422, indicating a moderately concentrated market structure (see Methodology: Market Structure & Concentration).
| Rank | Company | Market Cap | Industry Share |
|---|---|---|---|
| 1 | Linde Plc | 243,754 | 46.35 % |
| 2 | Air Products And Chemicals Inc | 71,044 | 13.51 % |
| 3 | Ppg Industries Inc | 28,496 | 5.42 % |
| 4 | International Flavors and Fragrances Inc | 22,531 | 4.28 % |
| 5 | Lyondellbasell Industries N v | 1,234 | 5.2% |
| 6 | Rpm International Inc | 1,234 | 5.2% |
| 7 | Westlake Corporation | 8,725 | 1.66 % |
| 8 | Corteva Inc | 1,234 | 5.2% |
| 9 | Element Solutions Inc | 1,234 | 5.2% |
| 10 | Axalta Coating Systems Ltd | 1,234 | 5.2% |
Market cap and industry share for the rest of Westlake's industry peers requires a Commercial License.
Source: CSIMarket API (daily market-structure computation) across CSIMarket's industry classification, market capitalization as of 2026-11-04.
Westlake's Same-Size Peers & Stock Performance
Peers chosen by closeness in market-cap rank within the same industry classification (not the named-competitor list above). Trailing 12-month total return, 3-month price momentum, beta and Sharpe ratio vs the broad U.S. market.| Rank | Company | Market Cap | TTM Return |
|---|---|---|---|
| 2 | Air Products And Chemicals Inc | 71,044 | 31.88 % |
| 3 | Ppg Industries Inc | 28,496 | 31.93 % |
| 4 | International Flavors and Fragrances Inc | 22,531 | 39.18 % |
| 5 | Lyondellbasell Industries N v | 20,338 | 41.43 % |
| 6 | Rpm International Inc | 1,234 | 12.3% |
| 7 | Westlake Corporation | 8,725 | 3.85 % |
| 8 | Corteva Inc | 1,234 | 12.3% |
| 9 | Element Solutions Inc | 1,234 | 12.3% |
| 10 | Axalta Coating Systems Ltd | 1,234 | 12.3% |
| 11 | Newmarket Corporation | 1,234 | 12.3% |
| 12 | Balchem Corp | 1,234 | 12.3% |
Market cap, return, momentum, beta and Sharpe ratio for the rest of Westlake's same-size peers requires a Commercial License.
Source: CSIMarket API (daily market-structure computation); returns and risk metrics as of 2026-11-04. Beta and Sharpe ratio are versus the broad U.S. equity market, not this industry.
Westlake's Profitability & Cost Structure
Trailing 12-month margins from SEC-filed financials. Operating margin is compared to the Chemical Manufacturing industry median; gross margin, EBITDA margin and capital intensity are compared to the live industry average (115 companies). See the full Chemical Manufacturing industry profitability benchmarks.| Metric | Company | Industry | Difference |
|---|---|---|---|
| Gross Margin | 9.62 % | 19.59 % (avg) | -10.0 pp |
| Operating Margin | -11.02 % | industry median | -11.1 pp |
| EBITDA Margin | 0.21 % | -0.17 % (avg) | +0.4 pp |
| Capital Intensity (Capex / Revenue) | 7.93 % | 7.93 % (avg) | +0.0 pp |
Source: CSIMarket API, trailing 12 months. SG&A and R&D as a share of revenue have limited coverage as this data is backfilled and appear only where reported. Higher capital intensity is not inherently negative; it reflects the industry's asset requirements.
Westlake's Valuation vs Competitive Position
Valuation multiples vs the Chemical Manufacturing industry average (115 companies, excluding loss-making/negative-equity outliers), alongside returns on capital for context on whether a premium or discount lines up with measurably stronger or weaker returns. See the full Chemical Manufacturing industry valuation benchmarks.| Metric | Company | Industry Average | Difference |
|---|---|---|---|
| P/E | - | 25.4x | - |
| EV / EBITDA | 651.1x | 13.5x | +637.6x |
| P/B | 1.3x | 3.9x | -2.6x |
| Return on Equity | -12.71 % | industry aggregate | -16.48 % |
| Return on Invested Capital | -4.39 % | -1.82 % (avg) | -2.57 % |
Source: CSIMarket API, trailing 12 months. A valuation premium or discount is not, by itself, a judgment of over- or under-valuation. Compare it against the return and growth context shown elsewhere on this page.
Westlake's Multi-Year Financial Trajectory
Fiscal-year revenue growth, operating margin, return on invested capital and P/E, as reported in company reports.| Metric | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|
| Revenue Growth | 7.39 % | -5.99 % | -7.56 % | 56.96 % | 34.10 % | -20.55 % | -3.24 % | -8.01 % |
| Operating Margin | 16.31 % | 8.08 % | 5.72 % | 23.77 % | 19.31 % | 5.81 % | 7.21 % | -14.13 % |
| Return on Invested Capital | 8.46 % | 3.49 % | 2.04 % | 11.66 % | 10.12 % | 2.29 % | 2.77 % | -5.26 % |
| P/E | 9.3x | 21.3x | 31.1x | 6.3x | 6.2x | 36.9x | 29.8x | - |
Source: CSIMarket API, fiscal-year figures. P/E is this company's own historical ratio at each fiscal year end and can swing sharply around an earnings trough: that is real, not a data error.
Westlake's Strategic Group Map
Westlake is shown in red; its closest peers by combined growth, margin and ROIC are labeled. See Methodology: Strategic Group Map for how this chart is built.
Westlake's trailing-12-month revenue growth of -4.0% and operating margin of -11.0% compares with an average of -0.9% growth and -4.4% margin across its 8 closest peers by combined growth, margin and ROIC -- Westlake sits below that peer average on growth and below it on margin.
Source: CSIMarket API, trailing 12 months. Extreme outlier values (from near-zero-revenue companies) are excluded from the plotted cloud but never from the highlighted company or its labeled peers.
Westlake's BCG Growth-Share Matrix
See Methodology: BCG Growth-Share Matrix for how relative share and growth are calculated and thresholded.
Westlake falls in the Dog quadrant: relative market share of 0.04x vs its largest competitor, in an industry growing revenue 2.2% (median, trailing 12 months).
Source: CSIMarket API (market-cap share and industry revenue growth). The 10% growth and 1.0x share lines are standard textbook thresholds, not derived from this industry's own distribution. A caveat worth reading alongside this chart: Linde Plc alone holds 46% of this industry's market cap. In an industry this dominated by one leader, the framework will place nearly every OTHER company in "Dog" or "Question Mark" purely because relative share is measured against that leader, regardless of how strong those other companies actually are on their own fundamentals. Check the Profitability, Valuation and Financial Strength sections above before treating this quadrant label as a verdict.
Westlake's Competitive Forces (Porter's Five Forces)
Only the forces this data can support honestly are shown; the other three are marked as such rather than guessed.| Force | Assessment | Basis |
|---|---|---|
| Competitive Rivalry | Moderate | Industry HHI of 2,422 (see Industry Market Structure & Concentration above) |
| Barriers to Entry | Moderate, in line with the industry | Capital intensity (capex / revenue) of 7.93 % vs industry average 7.93 % (see Profitability & Cost Structure above) |
Note: see Methodology: Porter's Five Forces. Supplier power and buyer power are covered on Westlake's dedicated Suppliers and Customers pages, not here.
Westlake's Industry Attractiveness & Competitive Strength
See Methodology: GE/McKinsey Matrix for how the two axes are built.
Westlake falls in the Low attractiveness / Low strength cell: Harvest / Divest.
Source: CSIMarket API, trailing 12 months. Each axis score is a simple 1(low)/2(medium)/3(high) average across its three inputs -- a transparent, disclosed simplification, not a validated academic scoring model.
Westlake's SWOT
Every point below is a fixed rule applied to a metric already shown elsewhere on this page (Market Structure, Profitability, Valuation, Run-Rate, Stock Performance, Quality Breadth) not an independent strategic assessment. A blank quadrant means no rule was met, not that none apply.Strengths
- Latest-quarter revenue run-rate is accelerating (+15.8% annualized vs trailing 12 months).
Weaknesses
- Operating margin 11.1 points below the industry median.
- Return on equity 16.5 points below the industry aggregate.
- Underperforming the U.S.A. 500 over the trailing 12 months.
- Low relative market share vs the industry leader (0.04x).
Opportunities
No rule matched.
Threats
- Industry dominated by Linde Plc, holding 46.35 % of industry market cap.
Methodology: see Methodology: SWOT Analysis.
Westlake's Financial Strength vs Peers Comparison
Quick ratio, working capital, debt to equity and asset turnover, trailing 12 months| Company | Quick Ratio | Working Capital | Debt / Equity |
|---|---|---|---|
| Westlake Corporation | 0.80 | 2.20 | 0.56 |
| Chevron Corp | 0.01 | 1.16 | 0.21 |
| Parker hannifin Corporation | 0.08 | 1.16 | 0.65 |
| Phillips 66 | 0.21 | 1.26 | 0.67 |
| Occidental Petroleum Corporation | 0.34 | 1.11 | 0.57 |
| Ppg Industries Inc | 0.34 | 1.60 | 0.88 |
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Quick ratio = cash / current liabilities; working capital ratio = current assets / current liabilities; asset turnover = revenue / total assets. Peers in the Blank Checks industry are excluded.
Westlake's Revenue and Income Growth vs Peers
Quarterly revenue and net income growth, year over year and quarter over quarter| Company | Period | Revenue Y/Y | Income Y/Y |
|---|---|---|---|
| Westlake Corporation | Q2 2026 | +10.8 % | - |
| Chevron Corp | Q2 2026 | +56.3 % | +385.6 % |
| Parker hannifin Corporation | Q2 2026 | +9.8 % | +18.2 % |
| Phillips 66 | Q3 2026 | +46.4 % | +3,262.9 % |
| Occidental Petroleum Corporation | Q2 2026 | +53.4 % | +540.2 % |
| Ppg Industries Inc | Q3 2026 | +6.6 % | +0.9 % |
| PEERS TOTAL | +34.7 % | - |
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Growth is shown only where both periods are positive. Peers in the Blank Checks industry are excluded.
Westlake's Peers' Costs of Sales and Capital Expenditures
Context for revenue growth: peer costs and capex, year over year and quarter over quarter| Company | Period | Costs Y/Y | Capex Y/Y |
|---|---|---|---|
| Westlake Corporation | Q2 2026 | -2.8 % | -22.5 % |
| Chevron Corp | Q2 2026 | +36.3 % | +22.3 % |
| Parker hannifin Corporation | Q2 2026 | +6.8 % | +32.2 % |
| Phillips 66 | Q3 2026 | +35.1 % | - |
| Occidental Petroleum Corporation | Q2 2026 | - | -6.8 % |
| Ppg Industries Inc | Q3 2026 | +6.7 % | +5.4 % |
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Westlake's Returns and Turnover vs Peers
ROA, ROI and ROE (trailing 12 months), receivables and inventory turnover| Company | ROA | ROI | ROE |
|---|---|---|---|
| Westlake Corporation | - | - | - |
| Chevron Corp | 6.40% | 6.49% | 10.85% |
| Parker hannifin Corporation | 11.99% | 15.10% | 25.38% |
| Phillips 66 | 15.53% | 19.44% | 39.46% |
| Occidental Petroleum Corporation | 8.90% | 8.31% | 18.83% |
| Ppg Industries Inc | 7.08% | 9.09% | 18.85% |
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ROA = net income / total assets; ROI = net income / investments; ROE = net income / equity; turnover ratios use trailing 12 month revenue (receivables) and cost of sales (inventory).
Westlake's Valuation vs Peers
P/E, price to sales, PEG, price to cash flow and price to book| Company | P/E | Price / Sales |
|---|---|---|
| Westlake Corporation | - | 0.77 |
| Chevron Corp | 20.69 | 1.99 |
| Parker hannifin Corporation | 31.97 | 5.42 |
| Phillips 66 | 8.30 | 0.62 |
| Occidental Petroleum Corporation | 8.87 | 2.68 |
| Ppg Industries Inc | 18.39 | 1.70 |
| PEERS AVERAGE | 18.03 | 1.48 |
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P/E = price / diluted EPS (trailing 12 months); PEG = P/E divided by EPS growth; the average row divides the peers' combined market cap by their combined income, sales, cash flow and equity.