WRK vs. WST

Last updated Aug 1, 2026

WRK (WestRock Company) and WST (West Pharmaceutical Services, Inc.) are both stocks. WRK operates in Packaging & Containers (Consumer Cyclical), while WST operates in Medical Instruments & Supplies (Healthcare). Their 0.02 correlation means their historical movements had little consistent relationship.

Performance

WRK vs. WST - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WestRock Company (WRK) and West Pharmaceutical Services, Inc. (WST). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

WRK

• 1D: —
• 1M: —
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

WST

• 1D: 0.40%
• 1M: -6.71%
• 6M: 47.73%
• YTD: 24.21%
• 1Y: 42.95%
• 3Y*: -2.56%
• 5Y*: -3.45%
• 10Y*: 15.91%
• ALL TIME*: 11.71%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
WST West Pharmaceutical Services, Inc.	$362.83M	$291.60M	$272.21M

WRK vs. WST - Yearly Performance Comparison

	2026 (YTD)	2025	2024
WRK WestRock Company	0.00%	0.00%	1.44%
WST West Pharmaceutical Services, Inc.	24.21%	-15.73%	2.21%

Correlation

The correlation between WRK and WST is 0.02, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.

	Correlation
Correlation (All Time) Calculated using the full available price history since Jul 5, 2024	0.02

Fundamentals

Total Revenue (TTM) WRK : $19.14B WST : $3.33B
Gross Profit (TTM) WRK : $3.25B WST : $1.22B
EBITDA (TTM) WRK : $2.50B WST : $824.20M

Return for Risk

WRK vs. WST — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

WRK

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

WST

WST Risk / Return Rank: 78
WST Sharpe Ratio Rank: 81
WST Sortino Ratio Rank: 79
WST Omega Ratio Rank: 78
WST Calmar Ratio Rank: 76
WST Martin Ratio Rank: 74

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

WRK vs. WST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WestRock Company (WRK) and West Pharmaceutical Services, Inc. (WST). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	WRK	WST	Difference
Sharpe ratio: Return per unit of total volatility	—	1.28	—
Sortino ratio: Return per unit of downside risk	—	1.98	—
Omega ratio: Gain probability vs. loss probability	—	1.25	—
Calmar ratio: Return relative to maximum drawdown	—	1.75	—
Martin ratio: Return relative to average drawdown	—	3.78	—

Drawdowns

Drawdown Indicators

	WRK	WST	Difference
Max Drawdown Largest peak-to-trough decline	—	-59.29%	—
Max Drawdown (1Y) Largest decline over 1 year	—	-24.70%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-53.79%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-59.29%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-59.29%	—
Current Drawdown Current decline from peak	—	-26.74%	—
Average Drawdown Average peak-to-trough decline	—	-16.92%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	11.41%	—

Volatility

Volatility by Period

	WRK	WST	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	9.56%	—
Volatility (6M) Calculated over the trailing 6-month period	—	24.58%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	34.01%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	40.73%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	34.73%	—

Dividends

WRK vs. WST - Dividend Comparison

WRK has not paid dividends to shareholders, while WST's dividend yield for the trailing twelve months is around 0.26%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
WRK WestRock Company	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
WST West Pharmaceutical Services, Inc.	0.26%	0.31%	0.25%	0.22%	0.31%	0.15%	0.23%	0.41%	0.58%	0.54%	0.58%	0.75%

Financials

Frequently Asked Questions

Can I hold both WRK and WST in my portfolio?

WRK and WST have a correlation of 0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.