Latest revenue
$2.65B
as of 2026-03-31
Latest net income
$-169.0M
as of 2026-03-31
Net margin
-6.4%
as of 2026-03-31
Price · 5Y
Live market
delayed ≤15 min- Market cap
- $11.35B
- Enterprise value
- $11.35B
- P/E (trailing)
- —
- Forward P/E
- —
- P/B
- —
- Dividend yield
- 1.8%
- 52-wk high
- $124.23
- 52-wk low
- $56.33
- Beta
- —
- Shares out
- 128.1M
5-year trend
What this company does
Item 1. Business Overview Westlake Corporation is a vertically integrated global manufacturer and marketer of both housing and infrastructure products and performance and essential materials that are designed to enhance the lives of people every day. Our products include some of the most widely used materials in the world, which are fundamental to many diverse consumer and industrial markets, including residential construction, flexible and rigid packaging, automotive, healthcare, water treatment, wind turbines, coatings as well as other durable and non-durable goods. We operate in two principal operating segments, Housing and Infrastructure Products (HIP) and Performance and Essential…
AI summary unavailable — showing raw filing excerpt
Generated from WLK's filing dated 2026-02-26
Key risks
Item 1A. Risk Factors Risk Factor Summary Risks Related to Our Business, Industry and Operations •Cyclicality in the petrochemical industry has in the past, and may in the future, result in reduced operating margins or operating losses. •Our Performance and Essential Materials business could suffer if commodity product exports by other countries significantly increase or are sold in global markets in violation of international fair trade laws. •We sell most of our commodity products in highly competitive markets and face significant competition and price pressure. •We operate internationally and are subject to related risks, including exchange rate fluctuations, exchange controls, trade…
AI summary unavailable — showing raw filing excerpt
Generated from WLK's filing dated 2026-02-26
Profitability
Gross margin
7.3%
54.8%Operating margin
-14.1%
296.0%Net margin
-13.5%
372.3%Return on equity
-17.2%
399.9%Return on assets
-7.6%
360.4%Leverage
Debt / equity
1.27×
30.8%Long-term debt / equity
0.58×
33.7%Debt / assets
56.0%
13.6%Earnings tracker
| Quarter | Revenue | YoY | Net income | YoY | Net margin |
|---|---|---|---|---|---|
Q1 2026 2026-03-31 | $2.65B | -6.8% | $-169.0M | -322.5% | -6.4% |
Q4 2025 2025-12-31 | $2.53B | -10.9% | $-544.0M | -7871.4% | -21.5% |
Q3 2025 2025-09-30 | $2.84B | -9.0% | $-782.0M | -824.1% | -27.6% |
Q2 2025 2025-06-30 | $2.95B | -7.9% | $-142.0M | -145.4% | -4.8% |
Q1 2025 2025-03-31 | $2.85B | -4.3% | $-40.0M | -123.0% | -1.4% |
Q4 2024 2024-12-31 | $2.84B | — | $7.0M | — | 0.2% |
Q3 2024 2024-09-30 | $3.12B | +0.1% | $108.0M | -62.1% | 3.5% |
Q2 2024 2024-06-30 | $3.21B | -1.4% | $313.0M | +5.4% | 9.8% |
Year-over-year change vs the same fiscal quarter one year prior. Revenue + net income sourced from SEC 10-Q / 10-K filings — no analyst-consensus dependency.
Industry trend
Industrial Organic Chemicals · SIC 2860
Your notes
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Insider activity
Insider buying
$0
Insider selling
$7.1M
Net activity
−$7.1M
Distinct insiders
3
Open-market trades over the last 365 days.
Recent transactions
Source: SEC Form 4 filings. Officers, directors, and 10%+ owners must disclose share transactions within two business days. RSU grants and tax-withholding rows are excluded by default — compensation activity is not a trading signal.
Who owns WLK
Institutional value
$2.22B
Total shares held
19.3M
Distinct holders
204
-91 vs prior
As of
2026-03-31
Prior: 2025-12-31
Filers with $100M+ AUM disclose holdings 45 days after quarter end.
Top institutional holders
| # | Manager | Shares | Value | QoQ change | Action |
|---|---|---|---|---|---|
| 1 | Capital World Investors | 4.2M | $491.9M | +2.0M (+93.9%) | Added |
| 2 | BlackRock, Inc. | 3.1M | $359.7M | -182.3K (-5.6%) | Trimmed |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.8M | $206.7M | — | New |
| 4 | DIMENSIONAL FUND ADVISORS LP | 1.5M | $171.3M | -419.7K (-22.3%) | Trimmed |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $170.0M | — | New |
| 6 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 981.4K | $114.6M | +56.7K (+6.1%) | Added |
| 7 | UBS Group AG | 811.3K | $94.8M | +163.3K (+25.2%) | Added |
| 8 | Nuveen, LLC | 564.7K | $66.0M | -88.2K (-13.5%) | Trimmed |
| 9 | Erste Asset Management GmbH | 395.0K | $45.8M | -25.0K (-6.0%) | Trimmed |
| 10 | NEW YORK STATE COMMON RETIREMENT FUND | 309.6K | $36.2M | +0 (+0.0%) | No change |
| 11 | ProShare Advisors LLC | 295.8K | $34.6M | -139.4K (-32.0%) | Trimmed |
| 12 | Allspring Global Investments Holdings, LLC | 285.4K | $33.3M | -221.3K (-43.7%) | Trimmed |
| 13 | FEDERATED HERMES, INC. | 266.7K | $31.2M | +158.9K (+147.5%) | Added |
| 14 | VANGUARD FIDUCIARY TRUST CO | 205.7K | $24.0M | — | New |
| 15 | DEPRINCE RACE & ZOLLO INC | 203.4K | $23.8M | -860 (-0.4%) | Trimmed |
| 16 | Bank of New York Mellon Corp | 181.1K | $21.2M | +6.8K (+3.9%) | Added |
| 17 | Invesco Ltd. | 179.4K | $21.0M | -33.8K (-15.8%) | Trimmed |
| 18 | ROBOTTI ROBERT | 145.0K | $16.9M | -367.5K (-71.7%) | Trimmed |
| 19 | SPROTT INC. | 132.6K | $15.5M | -7.4K (-5.3%) | Trimmed |
| 20 | Walleye Capital LLC | 119.6K | $14.0M | +72.0K (+151.0%) | Added |
Source: SEC Form 13F-HR. Positions aggregated across sub-managers within each firm. Options (puts/calls) excluded — common stock only.
Top questions investors are asking
Coming once WLK's latest filing finishes processing.