AVTR vs. SNY: Avantor vs. Sanofi Stock Comparison

November 11, 2026

How do Avantor (AVTR) and Sanofi (SNY) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.

Company Profile

Avantor (AVTR) and Sanofi (SNY) both fall under the Pharmaceuticals, Biotechnology & Life Sciences industry group, but AVTR is classified in Life Sciences Tools & Services while SNY is classified in Pharmaceuticals.

Avantor (AVTR) trades as ordinary local shares, while Sanofi (SNY) trades as an ADR — compare with FX exposure, depositary-program fees, and dividend-withholding-tax differences in mind.

Company profile comparison for Avantor (AVTR) and Sanofi (SNY)
Profile Item	AVTR	SNY
Name	Avantor, Inc.	Sanofi ADR
Country/Region	United States	France
GICS Sector	Health Care	Health Care
GICS Industry Group	Pharmaceuticals, Biotechnology & Life Sciences	Pharmaceuticals, Biotechnology & Life Sciences
GICS Industry	Life Sciences Tools & Services	Pharmaceuticals
GICS Sub-Industry	Life Sciences Tools & Services	Pharmaceuticals
Market Capitalization	10.48 billion USD	112.71 billion USD
Currency	USD	USD
Exchange	NYSE	Nasdaq
Listing Date	May 17, 2019	July 1, 2002
Security Type	Common Stock	ADR

Price Performance

Cumulative Growth

AVTR

SNY

GSPC

Avantor (AVTR) vs. Sanofi (SNY), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

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Trailing total returns for Avantor (AVTR) and Sanofi (SNY). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Avantor (AVTR) and Sanofi (SNY). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Avantor (AVTR) and Sanofi (SNY)
Metric	AVTR	SNY
Total Return (1Y)	36.41%	2.73%
Total Return (3Y, Annualized)	-5.02%	6.89%
Total Return (5Y, Annualized)	-16.62%	3.16%

Risk Profile

Drawdown History

AVTR

SNY

GSPC

Avantor (AVTR) vs. Sanofi (SNY), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

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Distribution of monthly total returns for Avantor (AVTR) and Sanofi (SNY). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for Avantor (AVTR) and Sanofi (SNY)
Metric	AVTR	SNY
Volatility (1Y, Annualized)	43.39%	23.60%
Beta (5Y)	0.94	0.28
Max Drawdown (5Y)	-82.42%	-33.52%
Avg. Volume (3M)	8.56M	3.29M

Risk-Adjusted Performance

Risk-Return Positioning

AVTR and SNY are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for Avantor (AVTR) and Sanofi (SNY)
Metric	AVTR	SNY
Sharpe Ratio (1Y)	0.74	-0.07
Sortino Ratio (1Y)	1.17	-0.10

Profitability

ROE (TTM)

Both Avantor (AVTR) at 5.91% and Sanofi (SNY) at 5.72% land near their industries’ usual ROE ranges, so capital efficiency looks broadly in line with peers on both sides.

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

5.91%

Max: 109.18%
Q3: 6.23%
AVTR: 5.91%
Median: -26.66%
Q1: -64.05%
Min: -167.77%

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

5.72%

Max: 109.18%
Q3: 6.23%
SNY: 5.72%
Median: -26.66%
Q1: -64.05%
Min: -167.77%

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their ROE against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Net Margin (TTM)

For every dollar of sales, both Avantor (AVTR) at 5.08% and Sanofi (SNY) at 8.20% retain more as net profit than most peers, landing in the top net margin quartile of their industries.

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

5.08%

Max: 18.05%
AVTR: 5.08%
Q3: 4.78%
Median: 0.00%
Q1: -4.14%
Min: -17.05%

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

8.20%

Max: 18.05%
SNY: 8.20%
Q3: 4.78%
Median: 0.00%
Q1: -4.14%
Min: -17.05%

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their net margin against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Operating Margin (TTM)

Sanofi (SNY) at 30.89% operates in the top operating margin quartile, ahead of Avantor (AVTR) at 8.19%, which runs around its industry’s norm.

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

8.19%

Max: 83.12%
Q3: 14.77%
AVTR: 8.19%
Median: 0.00%
Q1: -78.82%
Min: -207.40%

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

30.89%

Max: 83.12%
SNY: 30.89%
Q3: 14.77%
Median: 0.00%
Q1: -78.82%
Min: -207.40%

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their operating margin against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Profitability Metrics

Profitability metrics for Avantor (AVTR) and Sanofi (SNY)
Metric	AVTR	SNY
ROE (TTM)	5.91%	5.72%
ROA (TTM)	2.83%	5.31%
Net Margin (TTM)	5.08%	8.20%
Operating Margin (TTM)	8.19%	30.89%
Gross Margin (TTM)	31.59%	73.68%

Growth

Revenue Growth

Sanofi (SNY) at 5.49% is around its peer norm for revenue growth, while Avantor (AVTR) at -3.41% drops into the bottom quartile, signaling weaker demand or pricing momentum.

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their Revenue Growth across different time periods.

EPS Growth

Sanofi (SNY) at 39.43% is around its peer norm for EPS growth, while Avantor (AVTR) at -175.00% drops into the bottom quartile, signaling weaker earnings momentum.

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Avantor (AVTR) and Sanofi (SNY)
Metric	AVTR	SNY
Revenue Growth (YoY)	-3.41%	5.49%
Revenue Growth (3Y CAGR)	-4.46%	4.82%
EPS Growth (YoY)	-175.00%	39.43%
EPS Growth (3Y CAGR)	--	6.02%

Financial Strength

Current Ratio (MRQ)

Both Avantor (AVTR) at 1.89 and Sanofi (SNY) at 1.12 run current ratio in the tighter-liquidity quartile of industry peers, leaving thinner cushions against current liabilities than typical competitors.

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

1.89

Max: 25.13
Q3: 12.13
Median: 5.52
Q1: 2.47
AVTR: 1.89
Min: 0.10

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

1.12

Max: 25.13
Q3: 12.13
Median: 5.52
Q1: 2.47
SNY: 1.12
Min: 0.10

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their current ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Debt / Equity (MRQ)

Both Avantor (AVTR) at 0.63 and Sanofi (SNY) at 0.27 fund their balance sheets with roughly industry-typical debt-to-equity mixes.

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.63

Max: 1.42
Q3: 0.65
AVTR: 0.63
Median: 0.15
Q1: 0.02
Min: 0.00

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.27

Max: 1.42
Q3: 0.65
SNY: 0.27
Median: 0.15
Q1: 0.02
Min: 0.00

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their debt-to-equity ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Financial Strength Metrics

Financial strength metrics for Avantor (AVTR) and Sanofi (SNY)
Metric	AVTR	SNY
Current Ratio (MRQ)	1.89	1.12
Debt / Equity (MRQ)	0.63	0.27
Net Debt / EBITDA	3.40	0.96

Dividends

Dividend Yield (TTM)

Neither Avantor (AVTR) nor Sanofi (SNY) pays a dividend this period — they may reinvest, use buybacks, or simply not return cash through dividends.

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.00%

AVTR: 0.00%
Max: 0.00%
Q3: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.00%

SNY: 0.00%
Max: 0.00%
Q3: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their dividend yield against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Dividend Payout Ratio (TTM)

Sanofi (SNY) reports payout ratio above 100% at 119.86%, meaning dividends exceeded current-period earnings; Avantor (AVTR) pays no dividend (payout 0.00%).

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.00%

AVTR: 0.00%
Max: 0.00%
Q3: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

119.86%

SNY: 119.86%
Max: 0.00%
Q3: 0.00%
Median: 0.00%
Q1: 0.00%
Min: 0.00%

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their payout ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Dividend Metrics

Dividend metrics for Avantor (AVTR) and Sanofi (SNY)
Metric	AVTR	SNY
Dividend Yield (TTM)	0.00%	0.00%
Dividend Payout Ratio (TTM)	0.00%	119.86%

Valuation

P/E Ratio (TTM)

Both Avantor (AVTR) at 30.94 and Sanofi (SNY) at 23.40 land around their industries’ usual P/E ratio levels — neither is getting a clear earnings-multiple discount or premium versus peers.

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

30.94

Max: 85.34
Q3: 43.46
AVTR: 30.94
Median: 26.69
Q1: 13.30
Min: 0.07

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

23.40

Max: 85.34
Q3: 43.46
Median: 26.69
SNY: 23.40
Q1: 13.30
Min: 0.07

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their P/E ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

P/S Ratio (TTM)

Both Avantor (AVTR) at 1.58 and Sanofi (SNY) at 2.21 fetch a relatively low price per dollar of sales, landing in the cheaper P/S ratio quartile of their industries.

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

1.58

Max: 58.18
Q3: 25.77
Median: 7.30
Q1: 3.01
AVTR: 1.58
Min: 0.01

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

2.21

Max: 58.18
Q3: 25.77
Median: 7.30
Q1: 3.01
SNY: 2.21
Min: 0.01

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their P/S ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

P/B Ratio (MRQ)

Sanofi (SNY) at 1.38 sits in the lower P/B ratio quartile against book while Avantor (AVTR) at 1.80 is valued near its industry’s middle — SNY is cheaper on assets, though weigh it against ROE and asset quality.

AVTR

Pharmaceuticals, Biotechnology & Life Sciences industry group

1.80

Max: 13.53
Q3: 6.54
Median: 3.25
AVTR: 1.80
Q1: 1.69
Min: -5.59

SNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

1.38

Max: 13.53
Q3: 6.54
Median: 3.25
Q1: 1.69
SNY: 1.38
Min: -5.59

Avantor (AVTR) vs. Sanofi (SNY): A comparison of their P/B ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Valuation Metrics

Valuation metrics for Avantor (AVTR) and Sanofi (SNY)
Metric	AVTR	SNY
P/E Ratio (TTM)	30.94	23.40
P/S Ratio (TTM)	1.58	2.21
P/B Ratio (MRQ)	1.80	1.38
Free Cash Flow Yield (TTM)	4.21%	7.17%