MRK vs PAHC vs AZN Stock Comparison

Merck, Phibro Animal Health and Astrazeneca Prices as of Oct 29, 2026 Peers: Industry group
MRK Merck & Co., Inc.
$146.34 -2.0% 1M +69.0% 1Y
Market cap
$370.99B
P/E
151.2x
Revenue (TTM)
$67.38B
Div. yield
–
Pharmaceuticals Healthcare
2 wins
AZN Astrazeneca Plc
$174.51 +6.3% 1M +6.1% 1Y
Market cap
$290.81B
P/E
27.8x
Revenue (TTM)
$58.67B
Div. yield
–
Pharmaceuticals Healthcare
5 wins

Head to Head

11 decided of 12

Astrazeneca leads on 5 of the 12 questions below (Astrazeneca 5, Phibro Animal Health 4, Merck 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionMRKPAHCAZNLeader
Larger companyMarket capitalisation $370.99B $1.57B $290.81B MRK
Cheaper on earningsLower P/E, profitable companies only 151.2x 15.8x 27.8x PAHC
Cheaper on forward earningsLower price / next fiscal year consensus EPS 59.0x 11.4x 17.5x PAHC
Faster revenue growthRevenue growth, trailing twelve months +4.9% +17.1% +9.4% PAHC
More profitableNet margin, trailing twelve months — 6.6% 17.8% AZN
Better return on capitalReturn on invested capital — 14.2% 23.3% AZN
Less leveragedLower net debt / EBITDA — 2.1x 1.4x AZN
Higher dividend yieldTrailing dividend yield 0.00% 0.01% 0.00% –
Better 1-year returnPrice return, last 12 months +69.0% -5.7% +6.1% MRK
Better 5-year returnAnnualised price return, 5 years +10.7%/yr +12.1%/yr +6.9%/yr PAHC
Less volatileAnnualised volatility, 1 year 29.8% 55.6% 27.5% AZN
Higher overall scoreMean of the five percentile scores vs peers 61/100 68/100 71/100 AZN

Percentile Scorecard

MRKPAHCAZN

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisMRKPAHCAZN
Valuation 91 #60 of 624 92 #51 of 624 85 #96 of 624
Growth 21 #478 of 601 85 #89 of 601 70 #183 of 601
Profitability – 85 #81 of 541 94 #33 of 541
Financial Health – 26 #481 of 647 36 #415 of 647
Shareholder Returns 71 #104 of 359 53 #169 of 359 70 #110 of 359
Overall 61 68 71
  • MRK ranked among 671 companies in Pharmaceuticals and Biotechnology
  • PAHC ranked among 671 companies in Pharmaceuticals and Biotechnology
  • AZN ranked among 671 companies in Pharmaceuticals and Biotechnology

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodMRKPAHCAZNSPY
1 month -2.0%+9.6%+6.3% +0.7%
3 months +12.8%+6.6%+1.8% +3.7%
6 months +34.0%-26.9%-6.9% +7.1%
Year to date +39.0%+4.0%-5.1% +12.8%
1 year +69.0%-5.7%+6.1% +11.9%
3 years +42.5%+255.2%+38.6% +85.2%
3 years, per year +12.5%+52.6%+11.5% +22.8%
5 years +66.2%+77.1%+39.9% +67.6%
5 years, per year +10.7%+12.1%+6.9% +10.9%
10 years +148.7%+49.2%+205.1% +262.0%
10 years, per year +9.5%+4.1%+11.8% +13.7%

Risk

MeasureMRKPAHCAZNSPY
Volatility, 1Y 29.8%55.6%27.5% 12.7%
Downside volatility, 1Y 24.6%60.0%27.2% 12.6%
Beta vs S&P 500, 1Y 0.110.740.21 1.00
Return / volatility, 1Y 2.32-0.100.22 0.94
Max drawdown, 5Y -44.7%-57.9%-27.9% -25.4%
From 52-week high -6.5%-34.8%-16.7% -1.2%
52-week high $156.45$59.58$209.48 $779.14
52-week low $82.49$28.52$155.60 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleMRKPAHCAZN
P/E now vs peer median 147.4xmedian 17.8x 15.8xmedian 17.8x 25.9xmedian 17.8x
P/S now vs peer median 5.4xmedian 9.1x 1.0xmedian 9.1x 4.6xmedian 9.1x
EV/EBITDA now vs peer median —median 15.0x 8.3xmedian 15.0x 14.7xmedian 15.0x
P/FCF now vs peer median 22.9xmedian 21.7x 159.7xmedian 21.7x 25.4xmedian 21.7x
P/B now vs peer median —median 2.2x 4.1xmedian 2.2x 5.4xmedian 2.2x
PEG now vs peer median -8.13median 0.35 0.35median 0.35 1.35median 0.35

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsMRKPAHCAZN
Revenue $67.38B $1.52B $58.67B
Gross profit – $512.52M $50.25B
Operating income – $194.40M $13.97B
Net income – $99.72M $10.45B
Free cash flow – $9.87M $10.67B
R&D $30.76B – $15.07B
EPS (diluted) $0.99 $2.43 $6.69
Cash & equivalents – $61.42M $4.90B
Total debt – $2.49B $32.35B
Shares (diluted) 2.47B 40.96M 1.56B
Enterprise value $370.99B $1.26B $264.50B

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricMRKPAHCAZN
P/E 147.4x 15.8x 25.9x
P/FCF 22.9x 159.7x 25.4x
P/Operating cash flow – 22.9x 19.7x
P/S 5.4x 1.0x 4.6x
P/B – 4.1x 5.4x
P/Tangible book – 4.4x 21.4x
EV/EBITDA – 8.3x 14.7x
EV/EBIT – 10.9x 21.3x
EV/Revenue 5.4x 1.4x 5.1x
EV/FCF – 213.9x 27.9x
EV/Operating cash flow – 30.6x 21.7x
PEG (3Y EPS CAGR) -8.13 0.35 1.35

Growth

14 metrics
MetricMRKPAHCAZN
Revenue growth (1Y) 4.9% 17.1% 9.4%
Revenue CAGR (3Y) 4.3% 15.8% 10.6%
Gross profit growth (1Y) – 28.1% 9.3%
Gross profit CAGR (3Y) – 19.8% 13.1%
Operating income growth (1Y) – 76.0% 23.4%
Operating income CAGR (3Y) – 39.3% 23.9%
Net income growth (1Y) – 106.6% 25.9%
Net income CAGR (3Y) – 45.2% 19.2%
EPS growth (1Y) -87.0% 105.2% 26.0%
EPS CAGR (3Y) -18.1% 44.6% 19.2%
Operating cash flow growth (1Y) – -13.9% 2.3%
Operating cash flow CAGR (3Y) – 73.0% 13.7%
Free cash flow growth (1Y) – -76.4% -4.5%
Free cash flow CAGR (3Y) – 31.2% 8.5%

Profitability

14 metrics
MetricMRKPAHCAZN
Gross margin – 33.8% 85.6%
EBITDA margin – 16.8% 34.6%
Operating margin – 12.8% 23.8%
Pretax margin – 9.0% 21.5%
Net margin – 6.6% 17.8%
FCF margin – 0.6% 18.2%
Operating cash flow margin – 4.5% 23.3%
Return on equity – 26.7% 21.4%
Return on assets – 6.8% 9.1%
Return on invested capital – 14.2% 23.3%
Return on capital employed – 16.8% 16.8%
Asset turnover – 1.0x 0.5x
Cash conversion (OCF / net income) – 0.7x 1.3x
Stock comp / revenue – 0.1% –

Financial Health

11 metrics
MetricMRKPAHCAZN
Debt / assets – 41.1% 27.9%
Debt / equity – 1.6x 0.6x
Net debt / EBITDA – 2.1x 1.4x
Debt / FCF – 62.5x 3.0x
Liabilities / assets – 74.3% 56.5%
Equity / assets – 25.7% 43.5%
Interest coverage – 4.2x 15.9x
Current ratio – 3.0x 0.9x
Quick ratio – 1.1x 0.7x
Cash ratio – 0.3x 0.2x
Altman Z-score – 3.11 3.50

Shareholder Returns

7 metrics
MetricMRKPAHCAZN
Dividend yield 2.3% 1.2% 1.4%
Net buyback yield – – 0.0%
Shareholder yield 2.3% 1.2% 1.4%
Payout ratio (earnings) – 19.5% –
Payout ratio (FCF) – 197.3% –
Dividend growth (1Y) – 0.1% –
Dividend CAGR (3Y) – 0.0% –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusMRKPAHCAZN
Forward P/E 59.0xFY2026 11.4xFY2027 17.5xFY2026
EPS, next fiscal year $2.48FY2026 $3.42FY2027 $10.00FY2026
EPS growth, next FY -72.4%FY2026 +6.2%FY2027 +9.2%FY2026
EPS growth, the year after +257.3% +9.6% +6.1%
Revenue, next fiscal year $69.45BFY2026 $1.53BFY2027 $59.02BFY2026
Revenue growth, next FY +6.8%FY2026 +0.6%FY2027 +0.5%FY2026
Revenue growth, the year after -3.8% -0.2% +8.0%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersMRKPAHCAZN
Held by institutions 79.9% 51.5% 52.1%
Institutions holding 3,798 209 1,497
Change in shares held, QoQ +2.6% +3.0% +7.8%
Institutions buying 1,843 117 809
Institutions selling 1,465 74 468
Buyers to sellers 1.26 1.58 1.73

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

MRKPAHCAZN
MRK 1.00 0.22 0.49
PAHC 0.22 1.00 0.19
AZN 0.49 0.19 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, MRK, PAHC and AZN?

Merck (MRK) is the largest by market capitalisation: Merck (MRK) $370.99B, Phibro Animal Health (PAHC) $1.57B, Astrazeneca (AZN) $290.81B.

Which stock is cheaper, MRK, PAHC and AZN?

Phibro Animal Health (PAHC) trades on the lowest price-to-earnings ratio (Merck (MRK) 151.2x, Phibro Animal Health (PAHC) 15.8x, Astrazeneca (AZN) 27.8x). On next year's consensus earnings, Phibro Animal Health (PAHC) is cheapest (Merck (MRK) 59.0x, Phibro Animal Health (PAHC) 11.4x, Astrazeneca (AZN) 17.5x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Phibro Animal Health (PAHC) grew revenue fastest over the trailing twelve months: Merck (MRK) +4.9%, Phibro Animal Health (PAHC) +17.1%, Astrazeneca (AZN) +9.4%.

Which company is more profitable?

Astrazeneca (AZN) has the highest net margin (Phibro Animal Health (PAHC) 6.6%, Astrazeneca (AZN) 17.8%). On return on invested capital, Astrazeneca (AZN) leads (Phibro Animal Health (PAHC) 14.2%, Astrazeneca (AZN) 23.3%).

Which stock has performed better?

Over the past year Merck (MRK) returned the most: Merck (MRK) +69.0%, Phibro Animal Health (PAHC) -5.7%, Astrazeneca (AZN) +6.1%. Over five years, Phibro Animal Health (PAHC) compounded fastest (Merck (MRK) +10.7%/yr, Phibro Animal Health (PAHC) +12.1%/yr, Astrazeneca (AZN) +6.9%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Merck (MRK) 0.00%, Phibro Animal Health (PAHC) 0.01%, Astrazeneca (AZN) 0.00%. Merck (MRK) and Astrazeneca (AZN) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Astrazeneca (AZN) has been the steadiest (Merck (MRK) 29.8%, Phibro Animal Health (PAHC) 55.6%, Astrazeneca (AZN) 27.5%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, MRK, PAHC and AZN?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Astrazeneca (AZN) leads on 5. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.