AMPH vs INIS vs AMRX Stock Comparison

Amphastar Pharmaceuticals, Radnostix and Amneal Pharmaceuticals Prices as of Oct 26, 2026 Peers: Industry group
INIS Radnostix Inc
$0.05 -16.7% 1M 0.0% 1Y
Market cap
$20.11M
P/E
–
Revenue (TTM)
$11.23M
Div. yield
–
Generic Drugs Healthcare
1 win

Head to Head

11 decided of 12

Amneal Pharmaceuticals leads on 6 of the 12 questions below (Amneal Pharmaceuticals 6, Amphastar Pharmaceuticals 4, Radnostix 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionAMPHINISAMRXLeader
Larger companyMarket capitalisation $1.12B $20.11M $6.85B AMRX
Cheaper on earningsLower P/E, profitable companies only 14.2x -7.0x 43.5x AMPH
Cheaper on forward earningsLower price / next fiscal year consensus EPS 8.2x — 21.7x AMPH
Faster revenue growthRevenue growth, trailing twelve months +1.0% -23.7% +9.3% AMRX
More profitableNet margin, trailing twelve months 10.8% -25.5% 5.0% AMPH
Better return on capitalReturn on invested capital 6.4% — 17.4% AMRX
Less leveragedLower net debt / EBITDA 1.8x -0.5x 3.8x INIS
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months +3.9% 0.0% +99.2% AMRX
Better 5-year returnAnnualised price return, 5 years +6.8%/yr -13.0%/yr +31.6%/yr AMRX
Less volatileAnnualised volatility, 1 year 54.3% 169.2% 35.1% AMRX
Higher overall scoreMean of the five percentile scores vs peers 73/100 51/100 70/100 AMPH

Percentile Scorecard

AMPHINISAMRX

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

AxisAMPHINISAMRX
Valuation 99 #8 of 626 83 #110 of 626 92 #54 of 626
Growth 43 #347 of 604 2 #591 of 604 74 #158 of 604
Profitability 87 #72 of 555 72 #159 of 555 84 #91 of 555
Financial Health 37 #412 of 658 16 #553 of 658 12 #582 of 658
Shareholder Returns 99 #4 of 368 84 #61 of 368 88 #44 of 368
Overall 73 51 70
  • AMPH ranked among 673 companies in Pharmaceuticals and Biotechnology
  • INIS ranked among 673 companies in Pharmaceuticals and Biotechnology
  • AMRX ranked among 673 companies in Pharmaceuticals and Biotechnology

Price Performance

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

Returns

PeriodAMPHINISAMRXSPY
1 month -2.5%-16.7%+6.3% -0.8%
3 months +32.8%-28.6%+16.2% +3.5%
6 months +17.6%-37.5%+67.2% +7.0%
Year to date -4.9%-16.7%+66.8% +12.2%
1 year +3.9%0.0%+99.2% +13.0%
3 years -42.9%0.0%+457.6% +86.3%
3 years, per year -17.1%0.0%+77.4% +23.1%
5 years +38.7%-50.0%+293.6% +68.6%
5 years, per year +6.8%-13.0%+31.6% +11.0%
10 years +40.1%-37.5%— +258.0%
10 years, per year +3.4%-4.6%— +13.6%

Risk

MeasureAMPHINISAMRXSPY
Volatility, 1Y 54.3%169.2%35.1% 12.7%
Downside volatility, 1Y 66.4%264.0%31.0% 12.7%
Beta vs S&P 500, 1Y 0.582.050.70 1.00
Return / volatility, 1Y 0.070.002.83 1.02
Max drawdown, 5Y -74.0%-70.0%-78.2% -25.4%
From 52-week high -13.4%-54.5%0.0% -1.8%
52-week high $29.40$0.11$21.02 $779.14
52-week low $16.87$0.04$10.00 $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.

MultipleAMPHINISAMRX
P/E now vs peer median 14.2xmedian 17.1x -9.2xmedian 17.1x 42.6xmedian 17.1x
P/S now vs peer median 1.5xmedian 8.8x 2.4xmedian 8.8x 2.2xmedian 8.8x
EV/EBITDA now vs peer median 8.0xmedian 17.1x -11.0xmedian 17.1x 13.9xmedian 17.1x
P/FCF now vs peer median 7.1xmedian 18.0x -28.6xmedian 18.0x 80.8xmedian 18.0x
P/B now vs peer median 1.4xmedian 2.1x 14.0xmedian 2.1x 203.3xmedian 2.1x
PEG now vs peer median -5.53median 0.31 0.25median 0.31 0.18median 0.31

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 monthsAMPHINISAMRX
Revenue $730.02M $11.23M $3.12B
Gross profit $348.11M $6.04M $1.23B
Operating income $114.29M -$2.90M $453.92M
Net income $78.55M -$2.86M $215.32M
Free cash flow $152.89M -$925.24K $83.11M
R&D $94.57M $490.38K $175.57M
EPS (diluted) $1.78 $-0.01 $0.48
Cash & equivalents $223.61M $1.20M $127.64M
Total debt $612.05M $8.26M $2.67B
Shares (diluted) 44.23M 529.12M 328.10M
Enterprise value -$24.25M $14.22M $6.04B

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
MetricAMPHINISAMRX
P/E 14.2x -9.2x 42.6x
P/FCF 7.1x -28.6x 80.8x
P/Operating cash flow 5.9x -70.3x 33.4x
P/S 1.5x 2.4x 2.2x
P/B 1.4x 14.0x 203.3x
P/Tangible book 1.5x -21.4x -12.1x
EV/EBITDA 8.0x -11.0x 13.9x
EV/EBIT 12.3x -9.5x 20.4x
EV/Revenue 1.9x 2.5x 3.0x
EV/FCF 9.2x -29.8x 111.4x
EV/Operating cash flow 7.6x -73.3x 46.1x
PEG (3Y EPS CAGR) -5.53 0.25 0.18

Growth

14 metrics
MetricAMPHINISAMRX
Revenue growth (1Y) 1.0% -23.7% 9.3%
Revenue CAGR (3Y) 10.5% -2.6% 10.5%
Gross profit growth (1Y) -3.4% -32.4% 14.1%
Gross profit CAGR (3Y) 8.0% -4.0% 14.9%
Operating income growth (1Y) -37.1% -1,245% 20.6%
Operating income CAGR (3Y) -4.5% -50.5% 32.5%
Net income growth (1Y) -41.7% -2,437% 426.4%
Net income CAGR (3Y) -8.3% -38.0% 139.1%
EPS growth (1Y) -36.5% -2,429% 4,481%
EPS CAGR (3Y) -2.6% -37.0% 237.0%
Operating cash flow growth (1Y) 15.6% -157.0% -42.8%
Operating cash flow CAGR (3Y) 12.1% -41.4% 0.4%
Free cash flow growth (1Y) 36.3% -2,469% -69.3%
Free cash flow CAGR (3Y) 15.0% -69.5% -17.3%

Profitability

14 metrics
MetricAMPHINISAMRX
Gross margin 47.7% 53.8% 39.3%
EBITDA margin 23.9% -22.3% 21.3%
Operating margin 15.7% -25.8% 14.6%
Pretax margin 14.0% -28.3% 6.5%
Net margin 10.8% -25.5% 5.0%
FCF margin 20.9% -8.2% 2.7%
Operating cash flow margin 25.3% -3.4% 6.4%
Return on equity 10.2% -140.0% –
Return on assets 4.6% -18.8% 5.9%
Return on invested capital 6.4% – 17.4%
Return on capital employed 8.0% -22.8% 16.4%
Asset turnover 0.4x 0.7x 0.9x
Cash conversion (OCF / net income) 2.4x 0.1x 0.9x
Stock comp / revenue 4.0% 3.7% 1.1%

Financial Health

11 metrics
MetricAMPHINISAMRX
Debt / assets 35.1% 14.0% 70.7%
Debt / equity 0.8x 1.2x 80.9x
Net debt / EBITDA 1.8x -0.5x 3.8x
Debt / FCF 4.0x -2.5x 32.1x
Liabilities / assets 55.9% 88.6% 99.1%
Equity / assets 44.1% 11.4% 0.9%
Interest coverage 4.4x -8.5x –
Current ratio 2.4x 0.8x 2.2x
Quick ratio 1.7x 0.6x 1.3x
Cash ratio 1.1x 0.3x 0.1x
Altman Z-score 2.12 -9.85 2.48

Shareholder Returns

7 metrics
MetricAMPHINISAMRX
Dividend yield – – –
Net buyback yield 9.0% -0.1% 0.0%
Shareholder yield 9.0% -0.1% 0.0%
Payout ratio (earnings) – – –
Payout ratio (FCF) – – –
Dividend growth (1Y) – – –
Dividend CAGR (3Y) – – –

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.

ConsensusAMPHINISAMRX
Forward P/E 8.2xFY2026 – 21.7xFY2026
EPS, next fiscal year $3.09FY2026 – $0.97FY2026
EPS growth, next FY -4.9%FY2026 – +16.9%FY2026
EPS growth, the year after +9.4% – +26.8%
Revenue, next fiscal year $790.23MFY2026 – $3.24BFY2026
Revenue growth, next FY +9.8%FY2026 – +7.4%FY2026
Revenue growth, the year after -5.4% – +12.4%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersAMPHINISAMRX
Held by institutions 64.8% – 51.1%
Institutions holding 209 – 310
Change in shares held, QoQ -11.7% – +1.3%
Institutions buying 96 – 182
Institutions selling 74 – 86
Buyers to sellers 1.30 – 2.12

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.

AMPHINISAMRX
AMPH 1.00 0.04 0.45
INIS 0.04 1.00 0.02
AMRX 0.45 0.02 1.00

Add a Peer

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Frequently Asked Questions

Which is bigger, AMPH, INIS and AMRX?

Amneal Pharmaceuticals (AMRX) is the largest by market capitalisation: Amphastar Pharmaceuticals (AMPH) $1.12B, Radnostix (INIS) $20.11M, Amneal Pharmaceuticals (AMRX) $6.85B.

Which stock is cheaper, AMPH, INIS and AMRX?

Amphastar Pharmaceuticals (AMPH) trades on the lowest price-to-earnings ratio (Amphastar Pharmaceuticals (AMPH) 14.2x, Radnostix (INIS) -7.0x, Amneal Pharmaceuticals (AMRX) 43.5x). On next year's consensus earnings, Amphastar Pharmaceuticals (AMPH) is cheapest (Amphastar Pharmaceuticals (AMPH) 8.2x, Amneal Pharmaceuticals (AMRX) 21.7x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

Amneal Pharmaceuticals (AMRX) grew revenue fastest over the trailing twelve months: Amphastar Pharmaceuticals (AMPH) +1.0%, Radnostix (INIS) -23.7%, Amneal Pharmaceuticals (AMRX) +9.3%.

Which company is more profitable?

Amphastar Pharmaceuticals (AMPH) has the highest net margin (Amphastar Pharmaceuticals (AMPH) 10.8%, Radnostix (INIS) -25.5%, Amneal Pharmaceuticals (AMRX) 5.0%). On return on invested capital, Amneal Pharmaceuticals (AMRX) leads (Amphastar Pharmaceuticals (AMPH) 6.4%, Amneal Pharmaceuticals (AMRX) 17.4%).

Which stock has performed better?

Over the past year Amneal Pharmaceuticals (AMRX) returned the most: Amphastar Pharmaceuticals (AMPH) +3.9%, Radnostix (INIS) 0.0%, Amneal Pharmaceuticals (AMRX) +99.2%. Over five years, Amneal Pharmaceuticals (AMRX) compounded fastest (Amphastar Pharmaceuticals (AMPH) +6.8%/yr, Radnostix (INIS) -13.0%/yr, Amneal Pharmaceuticals (AMRX) +31.6%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Amneal Pharmaceuticals (AMRX) has been the steadiest (Amphastar Pharmaceuticals (AMPH) 54.3%, Radnostix (INIS) 169.2%, Amneal Pharmaceuticals (AMRX) 35.1%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, AMPH, INIS and AMRX?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Amneal Pharmaceuticals (AMRX) leads on 6. 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.