Alnylam Pharmaceuticals, Inc. (ALNY) vs West Pharmaceutical Services, Inc. (WST)
A side-by-side comparison of Alnylam Pharmaceuticals, Inc. and West Pharmaceutical Services, Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of October 4, 2026. Differences are shown without an overall score or investment verdict.
ALNY
Alnylam Pharmaceuticals, Inc.
$219.72HealthcareDelayed quote: Oct 2, 2026, 4:00 PM EDT
WST
West Pharmaceutical Services, Inc.
$364.98HealthcareDelayed quote: Oct 2, 2026, 4:00 PM EDT
Total return — ALNY vs WST
growth of $100 · dividends reinvested · last 10yALNY +222.0% (+12.4%/yr)WST +413.4% (+17.8%/yr)WST compounded faster over this window
ALNY WST
ALNY vs WST: by the numbers
- •ALNY is the larger company ($29.40B vs $25.69B market cap).
- •ALNY trades at the lower trailing earnings multiple (37.11 vs 46.67 P/E), one valuation lens rather than an overall verdict.
- •WST converts more revenue to profit (16.98% vs 16.82% net margin).
- •ALNY grew revenue faster over the past five years (47.53% vs 5.68% CAGR).
- •WST pays a dividend (0.24% yield), while ALNY has no payments in the available dividend history.
Metrics side by side
Valuation
| Metric | ALNY | WST |
|---|---|---|
| P/E ratio | 37.11 | 46.67 |
| Forward P/E | 32.95 | 40.69 |
| PEG ratio | N/A | 5.64 |
| P/S ratio | 6.12 | 7.72 |
| P/B ratio | 21.71 | 8.59 |
| EV / EBITDA | 27.47 | 29.49 |
| FCF yield | 1.85% | 1.70% |
Profitability
| Metric | ALNY | WST |
|---|---|---|
| Gross margin | 79.72% | 36.77% |
| Operating margin | 20.81% | 20.64% |
| Net margin | 16.82% | 16.98% |
| ROE | 59.67% | 18.89% |
| ROIC | 24.71% | 15.77% |
Dividends
| Metric | ALNY | WST |
|---|---|---|
| Dividend yield | N/A | 0.24% |
| Payout ratio | N/A | 11.25% |
Growth (annualized)
| Metric | ALNY | WST |
|---|---|---|
| Revenue CAGR (5Y) | 47.53% | 5.68% |
| EPS CAGR (5Y) | N/A | 7.85% |
| FCF CAGR (5Y) | N/A | 8.74% |
| Total return CAGR (5Y) | 2.66% | -2.50% |
Frequently asked
- Which has the lower trailing P/E, ALNY or WST?
- ALNY has the lower trailing P/E: ALNY trades at 37.11 and WST at 46.67. P/E is one valuation measure and does not by itself establish which business is cheaper.
- Which has grown faster, ALNY or WST?
- Over the past five years, ALNY grew revenue faster — ALNY at a 47.53% CAGR versus WST at 5.68%.
- Does ALNY or WST pay a bigger dividend?
- WST pays a dividend (0.24% yield), while ALNY has no payments in the available dividend history.
- Is ALNY or WST more profitable?
- WST runs the higher net margin — ALNY at 16.82% versus WST at 16.98%.
- How have ALNY and WST total returns compared?
- Over the past 10 years, ALNY delivered 12.47% and WST delivered 17.64% annualized total return. Past performance doesn't predict future results.
Go deeper
Dig into the metrics
Alnylam Pharmaceuticals P/E ratioWest Pharmaceutical Services P/E ratioWest Pharmaceutical Services dividend yieldAlnylam Pharmaceuticals ROEWest Pharmaceutical Services ROEAlnylam Pharmaceuticals operating marginWest Pharmaceutical Services operating marginAlnylam Pharmaceuticals revenue growthWest Pharmaceutical Services revenue growthAlnylam Pharmaceuticals free cash flowWest Pharmaceutical Services free cash flow
Alnylam Pharmaceuticals & West Pharmaceutical Services appear in these rankings
Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified October 4, 2026.