NAII vs STE vs WST Stock Comparison

Natural Alternatives International, Steris and West Pharmaceutical Services Prices as of Oct 27, 2026 Peers: Industry group
STE STERIS plc
$228.50 +9.4% 1M -5.2% 1Y
Market cap
$22.42B
P/E
27.8x
Revenue (TTM)
$6.04B
Div. yield
0.01%
Medical Devices Healthcare
6 wins

Head to Head

12 decided of 12

Steris leads on 6 of the 12 questions below (Steris 6, West Pharmaceutical Services 5, Natural Alternatives International 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionNAIISTEWSTLeader
Larger companyMarket capitalisation $6.87M $22.42B $28.59B WST
Cheaper on earningsLower P/E, profitable companies only -0.3x 27.8x 50.6x STE
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 19.8x 41.6x STE
Faster revenue growthRevenue growth, trailing twelve months +9.7% +8.4% +12.4% WST
More profitableNet margin, trailing twelve months -14.5% 13.3% 17.0% WST
Better return on capitalReturn on invested capital -24.9% 9.3% 16.9% WST
Less leveragedLower net debt / EBITDA -0.8x 0.9x -0.3x NAII
Higher dividend yieldTrailing dividend yield 0.00% 0.01% 0.00% STE
Better 1-year returnPrice return, last 12 months -59.4% -5.2% +38.6% WST
Better 5-year returnAnnualised price return, 5 years -38.3%/yr -0.4%/yr -1.1%/yr STE
Less volatileAnnualised volatility, 1 year 67.8% 26.2% 31.2% STE
Higher overall scoreMean of the five percentile scores vs peers 32/100 75/100 68/100 STE

Percentile Scorecard

NAIISTEWST

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

AxisNAIISTEWST
Valuation 30 #8 of 11 83 #39 of 227 48 #119 of 227
Growth 0 #11 of 11 72 #63 of 219 40 #132 of 219
Profitability 40 #7 of 11 87 #28 of 206 92 #18 of 206
Financial Health 58 #6 of 13 62 #91 of 238 78 #54 of 238
Shareholder Returns – 73 #37 of 134 81 #26 of 134
Overall 32 75 68
  • NAII ranked among 13 companies in Pharma Services
  • STE ranked among 247 companies in Medical Devices and Diagnostics
  • WST ranked among 247 companies in Medical Devices and Diagnostics

Price Performance

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

Returns

PeriodNAIISTEWSTSPY
1 month -35.8%+9.4%+7.5% -0.2%
3 months -51.9%-0.8%+18.1% +3.9%
6 months -57.8%+4.0%+36.3% +8.2%
Year to date -68.4%-9.9%+44.7% +12.9%
1 year -59.4%-5.2%+38.6% +12.3%
3 years -81.2%+9.1%+24.0% +87.4%
3 years, per year -42.7%+3.0%+7.5% +23.3%
5 years -91.0%-1.9%-5.5% +67.9%
5 years, per year -38.3%-0.4%-1.1% +10.9%
10 years -91.8%+241.5%+449.7% +261.1%
10 years, per year -22.1%+13.1%+18.6% +13.7%

Risk

MeasureNAIISTEWSTSPY
Volatility, 1Y 67.8%26.2%31.2% 12.7%
Downside volatility, 1Y 76.7%25.6%30.8% 12.7%
Beta vs S&P 500, 1Y 0.850.400.62 1.00
Return / volatility, 1Y -0.88-0.201.24 0.97
Max drawdown, 5Y -92.3%-36.5%-59.6% -25.4%
From 52-week high -76.6%-14.9%0.0% -1.2%
52-week high $4.83$268.65$398.10 $779.14
52-week low $1.12$199.40$230.95 $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.

MultipleNAIISTEWST
P/E now vs peer median -0.3xmedian 32.1x 27.7xmedian 29.6x 49.9xmedian 29.6x
P/S now vs peer median 0.0xmedian 2.6x 3.7xmedian 2.9x 8.4xmedian 2.9x
EV/EBITDA now vs peer median -1.3xmedian 38.1x 14.5xmedian 17.4x 32.3xmedian 17.4x
P/FCF now vs peer median -0.5xmedian 21.5x 24.1xmedian 22.3x 64.1xmedian 22.3x
P/B now vs peer median 0.1xmedian 3.1x 3.1xmedian 2.3x 9.4xmedian 2.3x
PEG now vs peer median 0.00median 2.03 0.31median 1.04 10.35median 1.04

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 monthsNAIISTEWST
Revenue $142.52M $6.04B $3.33B
Gross profit $9.00M $2.68B $1.22B
Operating income -$18.75M $1.14B $680.40M
Net income -$20.70M $808.10M $564.90M
Free cash flow -$12.62M $925.60M $436.90M
R&D – $115.10M $74.40M
EPS (diluted) $-3.43 $8.22 $7.92
Cash & equivalents $7.39M $482.30M $435.80M
Total debt $63.29M $1.89B $202.90M
Shares (diluted) 6.03M 97.90M 71.30M
Enterprise value -$21.21M $20.75B $26.22B

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
MetricNAIISTEWST
P/E -0.3x 27.7x 49.9x
P/FCF -0.5x 24.1x 64.1x
P/Operating cash flow -0.8x 17.3x 42.3x
P/S 0.0x 3.7x 8.4x
P/B 0.1x 3.1x 9.4x
P/Tangible book 0.1x 3.9x 9.4x
EV/EBITDA -1.3x 14.5x 32.3x
EV/EBIT -1.0x 20.8x 40.8x
EV/Revenue 0.1x 3.9x 8.4x
EV/FCF -1.4x 25.6x 63.6x
EV/Operating cash flow -2.0x 18.4x 42.0x
PEG (3Y EPS CAGR) 0.00 0.31 10.35

Growth

14 metrics
MetricNAIISTEWST
Revenue growth (1Y) 9.7% 8.4% 12.4%
Revenue CAGR (3Y) -2.6% 9.0% 5.1%
Gross profit growth (1Y) -3.1% 9.1% 17.2%
Gross profit CAGR (3Y) -20.9% 9.6% 3.8%
Operating income growth (1Y) -116.5% 23.1% 17.0%
Operating income CAGR (3Y) -81.5% 11.2% 1.3%
Net income growth (1Y) -52.4% 24.6% 15.8%
Net income CAGR (3Y) -116.9% 89.1% 2.9%
EPS growth (1Y) -50.4% 25.7% 17.8%
EPS CAGR (3Y) -115.5% 89.8% 4.8%
Operating cash flow growth (1Y) -250.3% 1.9% -2.1%
Operating cash flow CAGR (3Y) -48.4% 16.9% -2.2%
Free cash flow growth (1Y) -644.3% 1.8% 27.0%
Free cash flow CAGR (3Y) -24.7% 23.3% 3.3%

Profitability

14 metrics
MetricNAIISTEWST
Gross margin 6.3% 44.4% 36.8%
EBITDA margin -9.9% 27.0% 25.9%
Operating margin -13.2% 18.9% 20.5%
Pretax margin -14.2% 18.0% 20.8%
Net margin -14.5% 13.3% 17.0%
FCF margin -8.9% 15.3% 13.1%
Operating cash flow margin -6.3% 21.3% 19.9%
Return on equity -36.6% 11.2% 18.4%
Return on assets -14.7% 7.5% 13.4%
Return on invested capital -24.9% 9.3% 16.9%
Return on capital employed -18.2% 12.1% 19.7%
Asset turnover 1.0x 0.6x 0.8x
Cash conversion (OCF / net income) 0.4x 1.6x 1.2x
Stock comp / revenue 0.5% 1.0% 1.0%

Financial Health

11 metrics
MetricNAIISTEWST
Debt / assets 14.8% 17.6% 5.0%
Debt / equity 0.4x 0.3x 0.1x
Net debt / EBITDA -0.8x 0.9x -0.3x
Debt / FCF -1.5x 2.0x 0.5x
Liabilities / assets 60.5% 32.7% 26.6%
Equity / assets 39.5% 67.3% 73.4%
Interest coverage – 18.8x 151.2x
Current ratio 1.7x 1.9x 2.8x
Quick ratio 0.5x 1.2x 1.8x
Cash ratio 0.2x 0.4x 0.7x
Altman Z-score 1.38 5.26 18.78

Shareholder Returns

7 metrics
MetricNAIISTEWST
Dividend yield – 1.1% 0.2%
Net buyback yield 1.3% 1.5% 1.5%
Shareholder yield 1.3% 2.7% 1.8%
Payout ratio (earnings) – 30.6% 11.0%
Payout ratio (FCF) – 26.7% 14.3%
Dividend growth (1Y) – 9.9% 3.8%
Dividend CAGR (3Y) – 9.7% 3.8%

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.

ConsensusNAIISTEWST
Forward P/E – 19.8xFY2026 41.6xFY2026
EPS, next fiscal year – $11.56FY2026 $9.56FY2026
EPS growth, next FY – +13.7%FY2026 +31.1%FY2026
EPS growth, the year after – +13.2% +10.6%
Revenue, next fiscal year – $6.62BFY2026 $3.24BFY2026
Revenue growth, next FY – +11.5%FY2026 +5.6%FY2026
Revenue growth, the year after – -0.3% +16.8%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersNAIISTEWST
Held by institutions 10.5% 97.1% 99.5%
Institutions holding 24 829 833
Change in shares held, QoQ +6.0% +1.1% -0.9%
Institutions buying 8 405 448
Institutions selling 7 300 261
Buyers to sellers 1.14 1.35 1.72

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.

NAIISTEWST
NAII 1.00 0.16 0.10
STE 0.16 1.00 0.28
WST 0.10 0.28 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, NAII, STE and WST?

West Pharmaceutical Services (WST) is the largest by market capitalisation: Natural Alternatives International (NAII) $6.87M, Steris (STE) $22.42B, West Pharmaceutical Services (WST) $28.59B.

Which stock is cheaper, NAII, STE and WST?

Steris (STE) trades on the lowest price-to-earnings ratio (Natural Alternatives International (NAII) -0.3x, Steris (STE) 27.8x, West Pharmaceutical Services (WST) 50.6x). On next year's consensus earnings, Steris (STE) is cheapest (Steris (STE) 19.8x, West Pharmaceutical Services (WST) 41.6x). A lower multiple can reflect slower expected growth, so read it next to the growth figures.

Which company is growing faster?

West Pharmaceutical Services (WST) grew revenue fastest over the trailing twelve months: Natural Alternatives International (NAII) +9.7%, Steris (STE) +8.4%, West Pharmaceutical Services (WST) +12.4%.

Which company is more profitable?

West Pharmaceutical Services (WST) has the highest net margin (Natural Alternatives International (NAII) -14.5%, Steris (STE) 13.3%, West Pharmaceutical Services (WST) 17.0%). On return on invested capital, West Pharmaceutical Services (WST) leads (Natural Alternatives International (NAII) -24.9%, Steris (STE) 9.3%, West Pharmaceutical Services (WST) 16.9%).

Which stock has performed better?

Over the past year West Pharmaceutical Services (WST) returned the most: Natural Alternatives International (NAII) -59.4%, Steris (STE) -5.2%, West Pharmaceutical Services (WST) +38.6%. Over five years, Steris (STE) compounded fastest (Natural Alternatives International (NAII) -38.3%/yr, Steris (STE) -0.4%/yr, West Pharmaceutical Services (WST) -1.1%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Steris (STE) has the highest dividend yield: Natural Alternatives International (NAII) 0.00%, Steris (STE) 0.01%, West Pharmaceutical Services (WST) 0.00%. Natural Alternatives International (NAII) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, Steris (STE) has been the steadiest (Natural Alternatives International (NAII) 67.8%, Steris (STE) 26.2%, West Pharmaceutical Services (WST) 31.2%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, NAII, STE and WST?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Steris (STE) 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.