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ALNY vs. WST: Alnylam Pharmaceuticals vs. West Pharmaceutical Services Stock Comparison

How do Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST) stack up? This page sets them side by side across company profile, performance and risk, profitability, growth, financial strength, dividends, and valuation, with selected fundamentals also measured against each stock's industry-group peers.

Company Profile

Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST) both fall under the Pharmaceuticals, Biotechnology & Life Sciences industry group, but ALNY is classified in Biotechnology while WST is classified in Life Sciences Tools & Services.

Company profile comparison for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST)
Profile ItemALNYWST
NameAlnylam Pharmaceuticals, Inc.West Pharmaceutical Services Inc.
Country/RegionUnited StatesUnited States
GICS SectorHealth CareHealth Care
GICS Industry GroupPharmaceuticals, Biotechnology & Life SciencesPharmaceuticals, Biotechnology & Life Sciences
GICS IndustryBiotechnologyLife Sciences Tools & Services
GICS Sub-IndustryBiotechnologyLife Sciences Tools & Services
Market Capitalization20.89 billion USD27.85 billion USD
CurrencyUSDUSD
ExchangeNasdaqNYSE
Listing DateJune 1, 2004March 17, 1980
Security TypeCommon StockCommon Stock

Price Performance

Cumulative Growth

ALNY
WST
GSPC
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST), with S&P 500 (GSPC) for reference: Growth of a $10,000 investment over the past five years. Adjusted for dividends and splits.

Trailing Returns

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Trailing total returns for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST). Returns over one year are annualized.

Calendar-Year Returns

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Calendar-year total returns for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST). Each bar is that year's total return, measured year-end to year-end.

Performance Metrics

Price performance metrics for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST)
MetricALNYWST
Total Return (1Y)-64.57%51.68%
Total Return (3Y, Annualized)-1.58%7.13%
Total Return (5Y, Annualized)-3.13%0.05%

Risk Profile

Drawdown History

ALNY
WST
GSPC
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST), with S&P 500 (GSPC) for reference: Drawdown from the running peak over the past five years. Each line shows the decline from its prior peak; 0% marks a new high.

Return Distribution

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Distribution of monthly total returns for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST). Each bar is the share of months whose return fell in that 5% bucket.

Risk Metrics

Risk profile metrics for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST)
MetricALNYWST
Volatility (1Y, Annualized)54.08%31.45%
Beta (5Y)0.451.13
Max Drawdown (5Y)-68.25%-59.29%
Avg. Volume (3M)1.90M603.86K

Risk-Adjusted Performance

Risk-Return Positioning

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ALNY and WST are plotted by 1-year volatility (risk) and 1-year return. The dashed Capital Allocation Line runs from the risk-free rate through the shared industry median.

Risk-Adjusted Metrics

Risk-adjusted metrics for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST)
MetricALNYWST
Sharpe Ratio (1Y)-1.271.51
Sortino Ratio (1Y)-1.452.35

Profitability

ROE (TTM)

Both companies show strong equity returns, but Alnylam Pharmaceuticals (ALNY) at 138.07% is the standout with ROE above its industry range; West Pharmaceutical Services (WST) at 21.23% also sits in the top quartile.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

138.07%

ALNY
138.07%
Max
109.18%
Q3
6.23%
Median
-26.66%
Q1
-64.05%
Min
-167.77%

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

21.23%

Max
109.18%
WST
21.23%
Q3
6.23%
Median
-26.66%
Q1
-64.05%
Min
-167.77%
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their ROE against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Net Margin (TTM)

Both Alnylam Pharmaceuticals (ALNY) at 52.85% and West Pharmaceutical Services (WST) at 18.81% keep an unusually large share of revenue as bottom-line profit — each net margin clears its industry’s benchmark range.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

52.85%

ALNY
52.85%
Max
18.05%
Q3
4.78%
Median
0.00%
Q1
-4.14%
Min
-17.05%

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

18.81%

WST
18.81%
Max
18.05%
Q3
4.78%
Median
0.00%
Q1
-4.14%
Min
-17.05%
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their net margin against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Operating Margin (TTM)

Both Alnylam Pharmaceuticals (ALNY) at 23.72% and West Pharmaceutical Services (WST) at 25.37% convert sales into operating profit at a top-quartile rate, pointing to tighter cost discipline before financing and tax.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

23.72%

Max
83.12%
ALNY
23.72%
Q3
14.77%
Median
0.00%
Q1
-78.82%
Min
-207.40%

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

25.37%

Max
83.12%
WST
25.37%
Q3
14.77%
Median
0.00%
Q1
-78.82%
Min
-207.40%
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their operating margin against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Profitability Metrics

Profitability metrics for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST)
MetricALNYWST
ROE (TTM)138.07%21.23%
ROA (TTM)9.51%11.89%
Net Margin (TTM)52.85%18.81%
Operating Margin (TTM)23.72%25.37%
Gross Margin (TTM)77.28%37.59%

Growth

Revenue Growth

Alnylam Pharmaceuticals (ALNY) at 65.19% sits in the top revenue growth quartile, while West Pharmaceutical Services (WST) at 6.25% is closer to the peer norm — faster top-line expansion for ALNY.

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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their Revenue Growth across different time periods.

EPS Growth

Only one side can be read here: West Pharmaceutical Services (WST) reports EPS growth of 1.49%, ranked against its industry; Alnylam Pharmaceuticals (ALNY) has no EPS growth figure this period.

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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their EPS Growth across different time periods.

Growth Metrics

Growth metrics for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST)
MetricALNYWST
Revenue Growth (YoY)65.19%6.25%
Revenue Growth (3Y CAGR)52.98%2.12%
EPS Growth (YoY)--1.49%
EPS Growth (3Y CAGR)---4.23%

Financial Strength

Current Ratio (MRQ)

Both Alnylam Pharmaceuticals (ALNY) at 2.48 and West Pharmaceutical Services (WST) at 2.82 carry current ratio within their industries’ typical mid-ranges, suggesting balanced short-term liquidity relative to peers.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

2.48

Max
25.13
Q3
12.13
Median
5.52
ALNY
2.48
Q1
2.47
Min
0.10

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

2.82

Max
25.13
Q3
12.13
Median
5.52
WST
2.82
Q1
2.47
Min
0.10
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their current ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Debt / Equity (MRQ)

West Pharmaceutical Services (WST) at 0.11 carries an industry-typical debt-to-equity mix, while Alnylam Pharmaceuticals (ALNY) at 0.83 uses more debt funding than most peers.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.83

Max
1.42
ALNY
0.83
Q3
0.65
Median
0.15
Q1
0.02
Min
0.00

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.11

Max
1.42
Q3
0.65
Median
0.15
WST
0.11
Q1
0.02
Min
0.00
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their debt-to-equity ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Financial Strength Metrics

Financial strength metrics for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST)
MetricALNYWST
Current Ratio (MRQ)2.482.82
Debt / Equity (MRQ)0.830.11
Net Debt / EBITDA-0.57-0.16

Dividends

Dividend Yield (TTM)

Alnylam Pharmaceuticals (ALNY) pays no dividend (yield 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile West Pharmaceutical Services (WST) reports a yield of 0.22%, ranking against industry peers normally.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.00%

ALNY
0.00%
Max
0.00%
Q3
0.00%
Median
0.00%
Q1
0.00%
Min
0.00%

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.22%

WST
0.22%
Max
0.00%
Q3
0.00%
Median
0.00%
Q1
0.00%
Min
0.00%
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their dividend yield against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Dividend Payout Ratio (TTM)

Alnylam Pharmaceuticals (ALNY) pays no dividend (payout 0.00%) — it may be reinvesting, using buybacks, or simply not returning cash through dividends. Meanwhile West Pharmaceutical Services (WST) reports a payout of 9.88%, ranking against industry peers normally.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

0.00%

ALNY
0.00%
Max
0.00%
Q3
0.00%
Median
0.00%
Q1
0.00%
Min
0.00%

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

9.88%

WST
9.88%
Max
0.00%
Q3
0.00%
Median
0.00%
Q1
0.00%
Min
0.00%
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their payout ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Dividend Metrics

Dividend metrics for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST)
MetricALNYWST
Dividend Yield (TTM)0.00%0.22%
Dividend Payout Ratio (TTM)0.00%9.88%

Valuation

P/E Ratio (TTM)

Alnylam Pharmaceuticals (ALNY) at 7.88 sits in the cheaper P/E ratio quartile, while West Pharmaceutical Services (WST) at 44.87 sits in the richer quartile — a clear split in what investors pay for each dollar of trailing earnings.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

7.88

Max
85.34
Q3
43.46
Median
26.69
Q1
13.30
ALNY
7.88
Min
0.07

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

44.87

Max
85.34
WST
44.87
Q3
43.46
Median
26.69
Q1
13.30
Min
0.07
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their P/E ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

P/S Ratio (TTM)

On P/S ratio, both Alnylam Pharmaceuticals (ALNY) at 4.17 and West Pharmaceutical Services (WST) at 8.20 are priced roughly in line with their industries — neither looks cheap nor rich on a sales basis.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

4.17

Max
58.18
Q3
25.77
Median
7.30
ALNY
4.17
Q1
3.01
Min
0.01

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

8.20

Max
58.18
Q3
25.77
WST
8.20
Median
7.30
Q1
3.01
Min
0.01
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their P/S ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

P/B Ratio (MRQ)

Alnylam Pharmaceuticals (ALNY) at 5.79 is valued about in line with its industry on P/B ratio, while West Pharmaceutical Services (WST) at 9.40 carries an above-peer premium to book — WST is pricier on assets.

ALNY

Pharmaceuticals, Biotechnology & Life Sciences industry group

5.79

Max
13.53
Q3
6.54
ALNY
5.79
Median
3.25
Q1
1.69
Min
-5.59

WST

Pharmaceuticals, Biotechnology & Life Sciences industry group

9.40

Max
13.53
WST
9.40
Q3
6.54
Median
3.25
Q1
1.69
Min
-5.59
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Alnylam Pharmaceuticals (ALNY) vs. West Pharmaceutical Services (WST): A comparison of their P/B ratio against the Pharmaceuticals, Biotechnology & Life Sciences industry group benchmark.

Valuation Metrics

Valuation metrics for Alnylam Pharmaceuticals (ALNY) and West Pharmaceutical Services (WST)
MetricALNYWST
P/E Ratio (TTM)7.8844.87
P/S Ratio (TTM)4.178.20
P/B Ratio (MRQ)5.799.40
Free Cash Flow Yield (TTM)1.57%1.24%