How do Avantor, Inc. and WESTLAKE CORP compare by revenue?

Avantor, Inc. reported revenue of $1.7B in Q4 FY2025, while WESTLAKE CORP reported $2.5B in Q4 FY2025. WESTLAKE CORP is 1.5× larger by last-quarter revenue.

Which is growing revenue faster, Avantor, Inc. or WESTLAKE CORP?

Avantor, Inc.'s latest revenue grew -1.4% year-over-year, versus -10.9% for WESTLAKE CORP. Avantor, Inc. is growing faster on a YoY basis.

Which has a higher gross margin, Avantor, Inc. or WESTLAKE CORP?

Avantor, Inc.'s gross margin is 31.5% vs WESTLAKE CORP's 3.4%. Avantor, Inc. converts more of each revenue dollar into gross profit.

Which has a higher net margin, Avantor, Inc. or WESTLAKE CORP?

Avantor, Inc.'s net margin is 3.1% vs WESTLAKE CORP's -21.5%. Avantor, Inc. has the higher bottom-line margin.

Which generates more free cash flow, Avantor, Inc. or WESTLAKE CORP?

Avantor, Inc. generated $117.2M of free cash flow last quarter, versus $-16.0M for WESTLAKE CORP. Free cash flow is operating cash flow minus capital expenditure — what's actually left for dividends, buybacks and debt repayment.

What is the 2-year revenue CAGR for Avantor, Inc. vs WESTLAKE CORP?

Over the trailing 8 quarters, Avantor, Inc. compounded revenue at roughly -0.5% per year, versus -7.7% for WESTLAKE CORP. Avantor, Inc. has the faster medium-term growth trajectory.

Where does this AVTR vs WLK data come from?

All figures are parsed directly from SEC EDGAR 10-Q / 10-K / 20-F / 6-K filings (for US-listed issuers) or EDINET filings (for Japanese issuers), then normalised into a common schema. Numbers update automatically as new filings are released.

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Side-by-side financial comparison of Avantor, Inc. (AVTR) 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 $1.7B, roughly 1.5× Avantor, Inc.). Avantor, Inc. runs the higher net margin — 3.1% vs -21.5%, a 24.6% gap on every dollar of revenue. On growth, Avantor, Inc. posted the faster year-over-year revenue change (-1.4% vs -10.9%). Avantor, Inc. produced more free cash flow last quarter ($117.2M vs $-16.0M). Over the past eight quarters, Avantor, Inc.'s revenue compounded faster (-0.5% CAGR vs -7.7%).

Avantor, Inc.AVTREarnings & Financial Report

NYSE · Industrials · Laboratory Analytical Instruments

Avantor, Inc. is an American biotechnology, chemicals, and pharmaceutical company headquartered in Radnor, Pennsylvania. Established in 1904 as J.T. Baker, the company changed its name to Avantor in 2010. Avantor went public in 2019 and is now listed on the New York Stock Exchange under the symbol “AVTR”.

WESTLAKE CORPWLKEarnings & Financial Report

NYSE · Health Care · Industrial Organic Chemicals

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 ...

AVTR vs WLK — Head-to-Head

Bigger by revenue

WLK

1.5× larger

$2.5B

$1.7B

Growing faster (revenue YoY)

AVTR

+9.5% gap

-1.4%

-10.9%

Higher net margin

AVTR

24.6% more per $

3.1%

-21.5%

More free cash flow

AVTR

$133.2M more FCF

$117.2M

$-16.0M

Faster 2-yr revenue CAGR

AVTR

Annualised

-0.5%

-7.7%

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric	AVTR	WLK
Revenue	$1.7B	$2.5B
Net Profit	$52.4M	$-544.0M
Gross Margin	31.5%	3.4%
Operating Margin	7.6%	-26.5%
Net Margin	3.1%	-21.5%
Revenue YoY	-1.4%	-10.9%
Net Profit YoY	-89.5%	-7871.4%
EPS (diluted)	$0.08	$-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

AVTR

WLK

Q4 25	$1.7B	$2.5B
Q3 25	$1.6B	$2.8B
Q2 25	$1.7B	$3.0B
Q1 25	$1.6B	$2.8B
Q4 24	$1.7B	$2.8B
Q3 24	$1.7B	$3.1B
Q2 24	$1.7B	$3.2B
Q1 24	$1.7B	$3.0B

Net Profit

AVTR

WLK

Q4 25	$52.4M	$-544.0M
Q3 25	$-711.8M	$-782.0M
Q2 25	$64.7M	$-142.0M
Q1 25	$64.5M	$-40.0M
Q4 24	$500.4M	$7.0M
Q3 24	$57.8M	$108.0M
Q2 24	$92.9M	$313.0M
Q1 24	$60.4M	$174.0M

Gross Margin

AVTR

WLK

Q4 25	31.5%	3.4%
Q3 25	32.4%	8.3%
Q2 25	32.9%	8.7%
Q1 25	33.8%	8.2%
Q4 24	33.4%	11.5%
Q3 24	32.9%	16.0%
Q2 24	34.1%	20.7%
Q1 24	34.0%	15.7%

Operating Margin

AVTR

WLK

Q4 25	7.6%	-26.5%
Q3 25	-40.0%	-27.0%
Q2 25	7.7%	-3.7%
Q1 25	9.3%	-1.1%
Q4 24	37.8%	2.3%
Q3 24	7.3%	5.8%
Q2 24	10.3%	12.7%
Q1 24	8.7%	7.5%

Net Margin

AVTR

WLK

Q4 25	3.1%	-21.5%
Q3 25	-43.8%	-27.6%
Q2 25	3.8%	-4.8%
Q1 25	4.1%	-1.4%
Q4 24	29.7%	0.2%
Q3 24	3.4%	3.5%
Q2 24	5.5%	9.8%
Q1 24	3.6%	5.8%

EPS (diluted)

AVTR

WLK

Q4 25	$0.08	$-4.22
Q3 25	$-1.04	$-6.06
Q2 25	$0.09	$-1.11
Q1 25	$0.09	$-0.31
Q4 24	$0.73	$0.07
Q3 24	$0.08	$0.83
Q2 24	$0.14	$2.40
Q1 24	$0.09	$1.34

Balance Sheet & Financial Strength

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

Metric	AVTR	WLK
Cash + ST InvestmentsLiquidity on hand	$365.4M	$2.7B
Total DebtLower is stronger	$3.9B	$5.6B
Stockholders' EquityBook value	$5.6B	$8.8B
Total Assets	$11.8B	$20.0B
Debt / EquityLower = less leverage	0.71×	0.64×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments

AVTR

WLK

Q4 25	$365.4M	$2.7B
Q3 25	$251.9M	$1.9B
Q2 25	$449.4M	$2.1B
Q1 25	$315.7M	$2.3B
Q4 24	$261.9M	$2.9B
Q3 24	$285.3M	$2.9B
Q2 24	$272.6M	$3.0B
Q1 24	$234.9M	$3.1B

Total Debt

AVTR

WLK

Q4 25	$3.9B	$5.6B
Q3 25	$3.9B	$4.7B
Q2 25	$4.2B	$4.7B
Q1 25	$4.1B	$4.6B
Q4 24	$4.1B	$4.6B
Q3 24	$4.9B	$4.6B
Q2 24	$5.1B	$4.9B
Q1 24	$5.3B	$4.9B

Stockholders' Equity

AVTR

WLK

Q4 25	$5.6B	$8.8B
Q3 25	$5.6B	$9.4B
Q2 25	$6.3B	$10.3B
Q1 25	$6.1B	$10.4B
Q4 24	$6.0B	$10.5B
Q3 24	$5.6B	$10.7B
Q2 24	$5.4B	$10.6B
Q1 24	$5.3B	$10.3B

Total Assets

AVTR

WLK

Q4 25	$11.8B	$20.0B
Q3 25	$11.7B	$19.8B
Q2 25	$12.8B	$20.8B
Q1 25	$12.3B	$20.7B
Q4 24	$12.1B	$20.8B
Q3 24	$12.8B	$21.1B
Q2 24	$12.7B	$21.1B
Q1 24	$12.8B	$21.0B

Debt / Equity

AVTR

WLK

Q4 25	0.71×	0.64×
Q3 25	0.69×	0.49×
Q2 25	0.67×	0.45×
Q1 25	0.67×	0.44×
Q4 24	0.68×	0.43×
Q3 24	0.89×	0.43×
Q2 24	0.94×	0.46×
Q1 24	1.00×	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	AVTR	WLK
Operating Cash FlowLast quarter	$152.7M	$225.0M
Free Cash FlowOCF − Capex	$117.2M	$-16.0M
FCF MarginFCF / Revenue	7.0%	-0.6%
Capex IntensityCapex / Revenue	2.1%	9.5%
Cash ConversionOCF / Net Profit	2.91×	—
TTM Free Cash FlowTrailing 4 quarters	$495.0M	$-530.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow

AVTR

WLK

Q4 25	$152.7M	$225.0M
Q3 25	$207.4M	$182.0M
Q2 25	$154.4M	$135.0M
Q1 25	$109.3M	$-77.0M
Q4 24	$173.3M	$434.0M
Q3 24	$244.8M	$474.0M
Q2 24	$281.1M	$237.0M
Q1 24	$141.6M	$169.0M

Free Cash Flow

AVTR

WLK

Q4 25	$117.2M	$-16.0M
Q3 25	$171.7M	$-57.0M
Q2 25	$124.8M	$-132.0M
Q1 25	$81.3M	$-325.0M
Q4 24	$145.8M	$149.0M
Q3 24	$204.0M	$254.0M
Q2 24	$235.3M	$6.0M
Q1 24	$106.9M	$-103.0M