NAII vs WST vs VTRS Stock Comparison

Natural Alternatives International, West Pharmaceutical Services and Viatris Prices as of Oct 29, 2026 Peers: Industry group
VTRS Viatris Inc
$19.20 +6.0% 1M +87.0% 1Y
Market cap
$22.14B
P/E
–
Revenue (TTM)
$14.74B
Div. yield
–
Generic Drugs Healthcare
3 wins

Head to Head

10 decided of 12

West Pharmaceutical Services leads on 6 of the 12 questions below (West Pharmaceutical Services 6, Viatris 3, Natural Alternatives International 1). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionNAIIWSTVTRSLeader
Larger companyMarket capitalisation $6.63M $29.11B $22.14B WST
Cheaper on earningsLower P/E, profitable companies only -0.3x 45.6x -53.9x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — 43.5x 7.3x VTRS
Faster revenue growthRevenue growth, trailing twelve months +9.7% +12.6% +4.4% WST
More profitableNet margin, trailing twelve months -14.5% 18.8% -2.8% WST
Better return on capitalReturn on invested capital -24.9% 19.3% -0.2% WST
Less leveragedLower net debt / EBITDA -0.8x -0.3x 4.6x NAII
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -60.5% +45.9% +87.0% VTRS
Better 5-year returnAnnualised price return, 5 years -38.5%/yr -0.7%/yr +7.5%/yr VTRS
Less volatileAnnualised volatility, 1 year 67.9% 31.3% 32.4% WST
Higher overall scoreMean of the five percentile scores vs peers 32/100 70/100 66/100 WST

Percentile Scorecard

NAIIWSTVTRS

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

AxisNAIIWSTVTRS
Valuation 30 #8 of 11 50 #115 of 227 93 #42 of 624
Growth 0 #11 of 11 49 #112 of 218 49 #308 of 601
Profitability 40 #7 of 11 94 #14 of 202 82 #100 of 541
Financial Health 58 #6 of 13 78 #52 of 233 22 #502 of 647
Shareholder Returns – 79 #28 of 130 85 #54 of 359
Overall 32 70 66
  • NAII ranked among 13 companies in Pharma Services
  • WST ranked among 247 companies in Medical Devices and Diagnostics
  • VTRS 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

PeriodNAIIWSTVTRSSPY
1 month -24.5%+10.4%+6.0% +0.7%
3 months -54.3%+22.5%+8.1% +3.7%
6 months -58.4%+39.7%+28.5% +7.1%
Year to date -69.0%+51.1%+54.2% +12.8%
1 year -60.5%+45.9%+87.0% +11.9%
3 years -81.9%+30.0%+117.2% +85.2%
3 years, per year -43.4%+9.1%+29.5% +22.8%
5 years -91.2%-3.3%+43.8% +67.6%
5 years, per year -38.5%-0.7%+7.5% +10.9%
10 years -91.6%+467.2%-48.4% +262.0%
10 years, per year -22.0%+19.0%-6.4% +13.7%

Risk

MeasureNAIIWSTVTRSSPY
Volatility, 1Y 67.9%31.3%32.4% 12.7%
Downside volatility, 1Y 77.0%30.9%29.8% 12.6%
Beta vs S&P 500, 1Y 0.870.620.70 1.00
Return / volatility, 1Y -0.891.472.69 0.94
Max drawdown, 5Y -92.3%-59.6%-52.9% -25.4%
From 52-week high -77.0%0.0%0.0% -1.2%
52-week high $4.83$415.75$19.20 $779.14
52-week low $1.11$230.95$10.11 $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.

MultipleNAIIWSTVTRS
P/E now vs peer median -0.3xmedian 36.6x 45.8xmedian 28.7x -54.4xmedian 17.8x
P/S now vs peer median 0.0xmedian 2.6x 8.5xmedian 3.0x 1.5xmedian 9.1x
EV/EBITDA now vs peer median -1.3xmedian 31.1x 29.8xmedian 17.8x 12.7xmedian 15.0x
P/FCF now vs peer median -0.5xmedian 21.8x 64.0xmedian 26.4x 11.3xmedian 21.7x
P/B now vs peer median 0.1xmedian 3.1x 9.8xmedian 2.4x 1.5xmedian 2.2x
PEG now vs peer median 0.00median 2.05 6.84median 0.99 1.78median 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 monthsNAIIWSTVTRS
Revenue $142.52M $3.40B $14.74B
Gross profit $9.00M $1.28B $5.13B
Operating income -$18.75M $780.20M -$87.30M
Net income -$20.70M $638.90M -$410.70M
Free cash flow -$12.62M $453.40M $1.95B
R&D – $75.60M $1.02B
EPS (diluted) $-3.43 $9.02 $-0.35
Cash & equivalents $7.39M $464.10M $886.50M
Total debt $63.29M $202.90M $13.35B
Shares (diluted) 6.03M 70.80M 1.16B
Enterprise value -$21.45M $26.90B $17.16B

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
MetricNAIIWSTVTRS
P/E -0.3x 45.8x -54.4x
P/FCF -0.5x 64.0x 11.3x
P/Operating cash flow -0.8x 44.3x 9.5x
P/S 0.0x 8.5x 1.5x
P/B 0.1x 9.8x 1.5x
P/Tangible book 0.1x 9.8x 37.8x
EV/EBITDA -1.3x 29.8x 12.7x
EV/EBIT -1.0x 36.9x -395.4x
EV/Revenue 0.1x 8.5x 2.3x
EV/FCF -1.4x 63.4x 17.7x
EV/Operating cash flow -2.0x 43.9x 14.8x
PEG (3Y EPS CAGR) 0.00 6.84 1.78

Growth

14 metrics
MetricNAIIWSTVTRS
Revenue growth (1Y) 9.7% 12.6% 4.4%
Revenue CAGR (3Y) -2.6% 5.1% -1.9%
Gross profit growth (1Y) -3.1% 18.9% -0.7%
Gross profit CAGR (3Y) -20.9% 4.7% -6.0%
Operating income growth (1Y) -116.5% 32.7% 96.6%
Operating income CAGR (3Y) -81.5% 6.6% -27.6%
Net income growth (1Y) -52.4% 29.9% 88.2%
Net income CAGR (3Y) -116.9% 4.5% -30.5%
EPS growth (1Y) -50.4% 33.2% 88.1%
EPS CAGR (3Y) -115.5% 6.7% -30.6%
Operating cash flow growth (1Y) -250.3% -5.7% 12.9%
Operating cash flow CAGR (3Y) -48.4% -5.2% -3.0%
Free cash flow growth (1Y) -644.3% 19.6% 11.6%
Free cash flow CAGR (3Y) -24.7% 2.6% -3.6%

Profitability

14 metrics
MetricNAIIWSTVTRS
Gross margin 6.3% 37.6% 34.8%
EBITDA margin -9.9% 28.4% 18.4%
Operating margin -13.2% 23.0% -0.6%
Pretax margin -14.2% 23.2% -4.5%
Net margin -14.5% 18.8% -2.8%
FCF margin -8.9% 13.3% 13.3%
Operating cash flow margin -6.3% 19.3% 15.8%
Return on equity -36.6% 20.9% -2.8%
Return on assets -14.7% 15.3% -1.1%
Return on invested capital -24.9% 19.3% -0.2%
Return on capital employed -18.2% 22.8% -0.3%
Asset turnover 1.0x 0.8x 0.4x
Cash conversion (OCF / net income) 0.4x 1.0x -5.7x
Stock comp / revenue 0.5% 0.8% 1.2%

Financial Health

11 metrics
MetricNAIIWSTVTRS
Debt / assets 14.8% 5.0% 38.1%
Debt / equity 0.4x 0.1x 0.9x
Net debt / EBITDA -0.8x -0.3x 4.6x
Debt / FCF -1.5x 0.4x 6.8x
Liabilities / assets 60.5% 26.9% 59.3%
Equity / assets 39.5% 73.1% 40.7%
Interest coverage – 96.3x -0.2x
Current ratio 1.7x 2.8x 1.6x
Quick ratio 0.5x 1.9x 0.7x
Cash ratio 0.2x 0.7x 0.1x
Altman Z-score 1.38 19.42 1.16

Shareholder Returns

7 metrics
MetricNAIIWSTVTRS
Dividend yield – 0.2% 2.5%
Net buyback yield 1.3% 2.3% 1.4%
Shareholder yield 1.3% 2.5% 3.9%
Payout ratio (earnings) – 9.8% –
Payout ratio (FCF) – 13.9% –
Dividend growth (1Y) – 3.5% –
Dividend CAGR (3Y) – 3.7% –

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.

ConsensusNAIIWSTVTRS
Forward P/E – 43.5xFY2026 7.3xFY2026
EPS, next fiscal year – $9.56FY2026 $2.62FY2026
EPS growth, next FY – +31.1%FY2026 +11.5%FY2026
EPS growth, the year after – +10.6% -1.5%
Revenue, next fiscal year – $3.24BFY2026 $15.31BFY2026
Revenue growth, next FY – +5.6%FY2026 +7.0%FY2026
Revenue growth, the year after – +16.8% -4.8%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersNAIIWSTVTRS
Held by institutions 10.5% 99.5% 89.9%
Institutions holding 24 834 1,030
Change in shares held, QoQ +6.0% -0.9% +5.6%
Institutions buying 8 449 488
Institutions selling 7 261 318
Buyers to sellers 1.14 1.72 1.53

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.

NAIIWSTVTRS
NAII 1.00 0.09 0.08
WST 0.09 1.00 0.26
VTRS 0.08 0.26 1.00

Add a Peer

Largest companies in the same industry

Related Comparisons

Frequently Asked Questions

Which is bigger, NAII, WST and VTRS?

West Pharmaceutical Services (WST) is the largest by market capitalisation: Natural Alternatives International (NAII) $6.63M, West Pharmaceutical Services (WST) $29.11B, Viatris (VTRS) $22.14B.

Which company is growing faster?

West Pharmaceutical Services (WST) grew revenue fastest over the trailing twelve months: Natural Alternatives International (NAII) +9.7%, West Pharmaceutical Services (WST) +12.6%, Viatris (VTRS) +4.4%.

Which company is more profitable?

West Pharmaceutical Services (WST) has the highest net margin (Natural Alternatives International (NAII) -14.5%, West Pharmaceutical Services (WST) 18.8%, Viatris (VTRS) -2.8%). On return on invested capital, West Pharmaceutical Services (WST) leads (Natural Alternatives International (NAII) -24.9%, West Pharmaceutical Services (WST) 19.3%, Viatris (VTRS) -0.2%).

Which stock has performed better?

Over the past year Viatris (VTRS) returned the most: Natural Alternatives International (NAII) -60.5%, West Pharmaceutical Services (WST) +45.9%, Viatris (VTRS) +87.0%. Over five years, Viatris (VTRS) compounded fastest (Natural Alternatives International (NAII) -38.5%/yr, West Pharmaceutical Services (WST) -0.7%/yr, Viatris (VTRS) +7.5%/yr). Returns are price only, before dividends.

Which pays a higher dividend?

Only one of these companies pays a dividend: Natural Alternatives International (NAII) 0.00%, West Pharmaceutical Services (WST) 0.00%, Viatris (VTRS) 0.00%. Natural Alternatives International (NAII) and Viatris (VTRS) pays no regular dividend.

Which stock is riskier?

By one-year price volatility, West Pharmaceutical Services (WST) has been the steadiest (Natural Alternatives International (NAII) 67.9%, West Pharmaceutical Services (WST) 31.3%, Viatris (VTRS) 32.4%). Volatility measures how widely the price swings, not the risk of the business.

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

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