WST vs. AMCR
WST (West Pharmaceutical Services, Inc.) and AMCR (Amcor plc) are both stocks. WST operates in Medical Instruments & Supplies (Healthcare), while AMCR operates in Packaging & Containers (Consumer Cyclical). Over the past 5 years, WST returned -0.73%/yr vs -4.35%/yr for AMCR. At a 0.33 correlation, their price movements are largely independent.
Performance
WST vs. AMCR - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, WST achieves a 16.41% return, which is significantly higher than AMCR's -6.58% return.
WST
- 1D
- 1.67%
- 1M
- -1.89%
- YTD
- 16.41%
- 6M
- 19.03%
- 1Y
- 42.78%
- 3Y*
- -2.54%
- 5Y*
- -0.73%
- 10Y*
- 15.79%
AMCR
- 1D
- -0.81%
- 1M
- -3.71%
- YTD
- -6.58%
- 6M
- -5.56%
- 1Y
- -11.82%
- 3Y*
- -3.84%
- 5Y*
- -4.35%
- 10Y*
- —
WST vs. AMCR - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
WST West Pharmaceutical Services, Inc. | 16.41% | -15.73% | -6.75% | 49.97% | -49.70% | 65.88% | 89.05% | 24.85% |
AMCR Amcor plc | -6.58% | -6.17% | 2.61% | -14.97% | 3.20% | 6.16% | 13.41% | -0.71% |
Correlation
The correlation between WST and AMCR is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.29 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.29 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.35 |
Correlation (All Time) Calculated using the full available price history since Jun 12, 2019 | 0.33 |
Fundamentals
WST:
$23.15B
AMCR:
$17.54B
WST:
$7.47
AMCR:
$1.59
WST:
42.80
AMCR:
23.84
WST:
7.21
AMCR:
0.73
WST:
7.74
AMCR:
0.47
WST:
$3.22B
AMCR:
$22.19B
WST:
$1.17B
AMCR:
$4.10B
WST:
$799.00M
AMCR:
$2.58B
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
WST vs. AMCR — Risk / Return Rank
WST
AMCR
WST vs. AMCR - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for West Pharmaceutical Services, Inc. (WST) and Amcor plc (AMCR). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| WST | AMCR | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.43 | ||
| Sortino ratioReturn per unit of downside risk | +2.38 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 0.96 | +0.29 |
| Calmar ratioReturn relative to maximum drawdown | 1.74 | -0.45 | +2.19 |
| Martin ratioReturn relative to average drawdown | 3.48 | -0.81 | +4.29 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading charts...
Sharpe Ratios by Period
| WST | AMCR | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.05 | -0.38 | +1.43 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.02 | -0.17 | +0.16 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.46 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.39 | -0.03 | +0.42 |
Drawdowns
WST vs. AMCR - Drawdown Comparison
The maximum WST drawdown since its inception was -59.29%, which is greater than AMCR's maximum drawdown of -47.21%. Use the drawdown chart below to compare losses from any high point for WST and AMCR.
Loading charts...
Drawdown Indicators
| WST | AMCR | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -59.29% | -47.21% | -12.08% |
Max Drawdown (1Y)Largest decline over 1 year | -24.70% | -26.51% | +1.81% |
Max Drawdown (3Y)Largest decline over 3 years | -53.79% | -29.92% | -23.87% |
Max Drawdown (5Y)Largest decline over 5 years | -59.29% | -34.24% | -25.05% |
Max Drawdown (10Y)Largest decline over 10 years | -59.29% | — | — |
Current DrawdownCurrent decline from peak | -31.34% | -31.09% | -0.25% |
Average DrawdownAverage peak-to-trough decline | -16.88% | -14.54% | -2.34% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 12.32% | 14.67% | -2.35% |
Volatility
WST vs. AMCR - Volatility Comparison
The current volatility for West Pharmaceutical Services, Inc. (WST) is 7.76%, while Amcor plc (AMCR) has a volatility of 9.21%. This indicates that WST experiences smaller price fluctuations and is considered to be less risky than AMCR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| WST | AMCR | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 7.76% | 9.21% | -1.45% |
Volatility (6M)Calculated over the trailing 6-month period | 25.25% | 25.29% | -0.04% |
Volatility (1Y)Calculated over the trailing 1-year period | 41.20% | 31.26% | +9.94% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 40.57% | 25.00% | +15.57% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 34.63% | 29.22% | +5.41% |
Dividends
WST vs. AMCR - Dividend Comparison
WST's dividend yield for the trailing twelve months is around 0.27%, less than AMCR's 6.84% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AMCR Amcor plc | 6.84% | 6.15% | 5.34% | 5.11% | 4.05% | 3.93% | 3.93% | 2.17% | 0.00% | 0.00% | 0.00% | 0.00% |
WST West Pharmaceutical Services, Inc. | 0.27% | 0.31% | 0.25% | 0.22% | 0.31% | 0.15% | 0.23% | 0.41% | 0.58% | 0.54% | 0.58% | 0.75% |
Financials
WST vs. AMCR - Financials Comparison
This section allows you to compare key financial metrics between West Pharmaceutical Services, Inc. and Amcor plc. You can select fields from income statements, balance sheets, and cash flow statements to easily visualize and compare the financial health of both companies.
Total Revenue: Total amount of money received from sales and other business activities
WST vs. AMCR - Profitability Comparison
WST - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, West Pharmaceutical Services, Inc. reported a gross profit of 296.40M and revenue of 844.90M. Therefore, the gross margin over that period was 35.1%.
AMCR - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Amcor plc reported a gross profit of 1.19B and revenue of 5.91B. Therefore, the gross margin over that period was 20.1%.
WST - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, West Pharmaceutical Services, Inc. reported an operating income of 177.10M and revenue of 844.90M, resulting in an operating margin of 21.0%.
AMCR - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Amcor plc reported an operating income of 461.00M and revenue of 5.91B, resulting in an operating margin of 7.8%.
WST - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, West Pharmaceutical Services, Inc. reported a net income of 138.80M and revenue of 844.90M, resulting in a net margin of 16.4%.
AMCR - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Amcor plc reported a net income of 278.00M and revenue of 5.91B, resulting in a net margin of 4.7%.
Frequently Asked Questions
WST and AMCR have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
AMCR has higher volatility (9.21%) compared to WST (7.76%). In terms of maximum drawdown, WST dropped -59.29% vs AMCR's -47.21%.
WST currently has the higher Sharpe Ratio (1.05 vs -0.38), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
Find the right allocation for WST and AMCR
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer