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Side-by-side financial comparison of SOMNIGROUP INTERNATIONAL INC. (SGI) and WESTLAKE CORP (WLK). Click either name above to swap in a different company.

WESTLAKE CORP is the larger business by last-quarter revenue ($2.5B vs $1.9B, roughly 1.4× SOMNIGROUP INTERNATIONAL INC.). SOMNIGROUP INTERNATIONAL INC. runs the higher net margin — 7.5% vs -21.5%, a 29.0% gap on every dollar of revenue. On growth, SOMNIGROUP INTERNATIONAL INC. posted the faster year-over-year revenue change (54.7% vs -10.9%). SOMNIGROUP INTERNATIONAL INC. produced more free cash flow last quarter ($41.1M vs $-16.0M). Over the past eight quarters, SOMNIGROUP INTERNATIONAL INC.'s revenue compounded faster (25.3% CAGR vs -7.7%).

Somnigroup International Inc. is an American manufacturer of mattresses and bedding products.

Westlake Corporation is an international manufacturer and supplier of petrochemicals, polymers and fabricated building products, which are fundamental to various consumer and industrial markets. The company was founded by Ting Tsung Chao in 1986. it is the largest producer of low-density polyethylene (LDPE) in the US and ranks among the Forbes Global 2000. Westlake Chemical operates in two segments: Olefins and Vinyls, and is also an integrated producer of vinyls, with substantial downstream ...

SGI vs WLK — Head-to-Head

Bigger by revenue
WLK
WLK
1.4× larger
WLK
$2.5B
$1.9B
SGI
Growing faster (revenue YoY)
SGI
SGI
+65.6% gap
SGI
54.7%
-10.9%
WLK
Higher net margin
SGI
SGI
29.0% more per $
SGI
7.5%
-21.5%
WLK
More free cash flow
SGI
SGI
$57.1M more FCF
SGI
$41.1M
$-16.0M
WLK
Faster 2-yr revenue CAGR
SGI
SGI
Annualised
SGI
25.3%
-7.7%
WLK

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
SGI
SGI
WLK
WLK
Revenue
$1.9B
$2.5B
Net Profit
$140.8M
$-544.0M
Gross Margin
44.0%
3.4%
Operating Margin
13.2%
-26.5%
Net Margin
7.5%
-21.5%
Revenue YoY
54.7%
-10.9%
Net Profit YoY
95.8%
-7871.4%
EPS (diluted)
$0.71
$-4.22

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
SGI
SGI
WLK
WLK
Q4 25
$1.9B
$2.5B
Q3 25
$2.1B
$2.8B
Q2 25
$1.9B
$3.0B
Q1 25
$1.6B
$2.8B
Q4 24
$1.2B
$2.8B
Q3 24
$1.3B
$3.1B
Q2 24
$1.2B
$3.2B
Q1 24
$1.2B
$3.0B
Net Profit
SGI
SGI
WLK
WLK
Q4 25
$140.8M
$-544.0M
Q3 25
$177.4M
$-782.0M
Q2 25
$99.0M
$-142.0M
Q1 25
$-33.1M
$-40.0M
Q4 24
$71.9M
$7.0M
Q3 24
$130.0M
$108.0M
Q2 24
$106.1M
$313.0M
Q1 24
$76.3M
$174.0M
Gross Margin
SGI
SGI
WLK
WLK
Q4 25
44.0%
3.4%
Q3 25
44.9%
8.3%
Q2 25
44.0%
8.7%
Q1 25
36.2%
8.2%
Q4 24
43.3%
11.5%
Q3 24
45.4%
16.0%
Q2 24
44.9%
20.7%
Q1 24
43.1%
15.7%
Operating Margin
SGI
SGI
WLK
WLK
Q4 25
13.2%
-26.5%
Q3 25
14.8%
-27.0%
Q2 25
9.6%
-3.7%
Q1 25
0.8%
-1.1%
Q4 24
10.6%
2.3%
Q3 24
15.5%
5.8%
Q2 24
14.0%
12.7%
Q1 24
11.1%
7.5%
Net Margin
SGI
SGI
WLK
WLK
Q4 25
7.5%
-21.5%
Q3 25
8.4%
-27.6%
Q2 25
5.3%
-4.8%
Q1 25
-2.1%
-1.4%
Q4 24
6.0%
0.2%
Q3 24
10.0%
3.5%
Q2 24
8.6%
9.8%
Q1 24
6.4%
5.8%
EPS (diluted)
SGI
SGI
WLK
WLK
Q4 25
$0.71
$-4.22
Q3 25
$0.83
$-6.06
Q2 25
$0.47
$-1.11
Q1 25
$-0.17
$-0.31
Q4 24
$0.40
$0.07
Q3 24
$0.73
$0.83
Q2 24
$0.60
$2.40
Q1 24
$0.43
$1.34

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
SGI
SGI
WLK
WLK
Cash + ST InvestmentsLiquidity on hand
$2.7B
Total DebtLower is stronger
$4.6B
$5.6B
Stockholders' EquityBook value
$3.1B
$8.8B
Total Assets
$11.6B
$20.0B
Debt / EquityLower = less leverage
1.47×
0.64×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
SGI
SGI
WLK
WLK
Q4 25
$2.7B
Q3 25
$1.9B
Q2 25
$2.1B
Q1 25
$2.3B
Q4 24
$2.9B
Q3 24
$2.9B
Q2 24
$3.0B
Q1 24
$3.1B
Total Debt
SGI
SGI
WLK
WLK
Q4 25
$4.6B
$5.6B
Q3 25
$4.5B
$4.7B
Q2 25
$4.8B
$4.7B
Q1 25
$4.9B
$4.6B
Q4 24
$3.7B
$4.6B
Q3 24
$2.2B
$4.6B
Q2 24
$2.4B
$4.9B
Q1 24
$2.5B
$4.9B
Stockholders' Equity
SGI
SGI
WLK
WLK
Q4 25
$3.1B
$8.8B
Q3 25
$3.0B
$9.4B
Q2 25
$2.8B
$10.3B
Q1 25
$2.7B
$10.4B
Q4 24
$559.0M
$10.5B
Q3 24
$564.5M
$10.7B
Q2 24
$411.8M
$10.6B
Q1 24
$326.6M
$10.3B
Total Assets
SGI
SGI
WLK
WLK
Q4 25
$11.6B
$20.0B
Q3 25
$11.4B
$19.8B
Q2 25
$11.4B
$20.8B
Q1 25
$11.3B
$20.7B
Q4 24
$6.0B
$20.8B
Q3 24
$4.6B
$21.1B
Q2 24
$4.6B
$21.1B
Q1 24
$4.6B
$21.0B
Debt / Equity
SGI
SGI
WLK
WLK
Q4 25
1.47×
0.64×
Q3 25
1.51×
0.49×
Q2 25
1.69×
0.45×
Q1 25
1.79×
0.44×
Q4 24
6.69×
0.43×
Q3 24
3.95×
0.43×
Q2 24
5.92×
0.46×
Q1 24
7.74×
0.47×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
SGI
SGI
WLK
WLK
Operating Cash FlowLast quarter
$99.4M
$225.0M
Free Cash FlowOCF − Capex
$41.1M
$-16.0M
FCF MarginFCF / Revenue
2.2%
-0.6%
Capex IntensityCapex / Revenue
3.1%
9.5%
Cash ConversionOCF / Net Profit
0.71×
TTM Free Cash FlowTrailing 4 quarters
$633.2M
$-530.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
SGI
SGI
WLK
WLK
Q4 25
$99.4M
$225.0M
Q3 25
$408.2M
$182.0M
Q2 25
$186.1M
$135.0M
Q1 25
$106.4M
$-77.0M
Q4 24
$129.1M
$434.0M
Q3 24
$256.6M
$474.0M
Q2 24
$150.6M
$237.0M
Q1 24
$130.2M
$169.0M
Free Cash Flow
SGI
SGI
WLK
WLK
Q4 25
$41.1M
$-16.0M
Q3 25
$360.3M
$-57.0M
Q2 25
$149.4M
$-132.0M
Q1 25
$82.4M
$-325.0M
Q4 24
$108.2M
$149.0M
Q3 24
$240.2M
$254.0M
Q2 24
$122.1M
$6.0M
Q1 24
$98.7M
$-103.0M
FCF Margin
SGI
SGI
WLK
WLK
Q4 25
2.2%
-0.6%
Q3 25
17.0%
-2.0%
Q2 25
7.9%
-4.5%
Q1 25
5.1%
-11.4%
Q4 24
9.0%
5.2%
Q3 24
18.5%
8.1%
Q2 24
9.9%
0.2%
Q1 24
8.3%
-3.5%
Capex Intensity
SGI
SGI
WLK
WLK
Q4 25
3.1%
9.5%
Q3 25
2.3%
8.4%
Q2 25
2.0%
9.0%
Q1 25
1.5%
8.7%
Q4 24
1.7%
10.0%
Q3 24
1.3%
7.1%
Q2 24
2.3%
7.2%
Q1 24
2.6%
9.1%
Cash Conversion
SGI
SGI
WLK
WLK
Q4 25
0.71×
Q3 25
2.30×
Q2 25
1.88×
Q1 25
Q4 24
1.80×
62.00×
Q3 24
1.97×
4.39×
Q2 24
1.42×
0.76×
Q1 24
1.71×
0.97×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

SGI
SGI

Mattress Firm Segment$892.1M48%
Tempur Sealy North America Segment$620.5M33%
Tempur Sealy International Segment$355.8M19%

WLK
WLK

Performance Materials$930.0M37%
Housing Products$767.0M30%
Essential Materials$702.0M28%
Infrastructure Products$134.0M5%

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