WMK vs. COST
WMK (Weis Markets, Inc.) and COST (Costco Wholesale Corporation) are both stocks. Both are in the Consumer Defensive sector — WMK in Grocery Stores, COST in Discount Stores. Over the past 10 years, WMK returned 5.99%/yr vs 22.34%/yr for COST. At a 0.25 correlation, their price movements are largely independent.
Performance
WMK vs. COST - Performance Comparison
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Returns By Period
In the year-to-date period, WMK achieves a 16.32% return, which is significantly higher than COST's 11.85% return. Over the past 10 years, WMK has underperformed COST with an annualized return of 5.99%, while COST has yielded a comparatively higher 22.34% annualized return.
WMK
- 1D
- -0.51%
- 1M
- 7.65%
- YTD
- 16.32%
- 6M
- 10.82%
- 1Y
- 0.75%
- 3Y*
- 7.55%
- 5Y*
- 9.11%
- 10Y*
- 5.99%
COST
- 1D
- 0.79%
- 1M
- -5.03%
- YTD
- 11.85%
- 6M
- 4.58%
- 1Y
- -8.37%
- 3Y*
- 25.00%
- 5Y*
- 21.24%
- 10Y*
- 22.34%
WMK vs. COST - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
WMK Weis Markets, Inc. | 16.32% | -3.57% | 8.00% | -20.81% | 27.10% | 40.93% | 21.27% | -12.73% | 18.61% | -36.57% |
COST Costco Wholesale Corporation | 11.85% | -5.39% | 39.62% | 49.00% | -19.05% | 51.82% | 32.67% | 45.70% | 10.60% | 22.37% |
Correlation
The correlation between WMK and COST is 0.32, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.32 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.15 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.26 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.27 |
Correlation (All Time) Calculated using the full available price history since Sep 23, 1993 | 0.25 |
The correlation between WMK and COST shifts across timeframes, from 0.15 (3 years) to 0.32 (1 year), reflecting how their relationship changes across market environments.
Fundamentals
WMK:
$3.98
COST:
$26.51
WMK:
18.55
COST:
36.29
WMK:
0.37
COST:
1.09
WMK:
$5.01B
COST:
$293.59B
WMK:
$1.16B
COST:
$11.12B
WMK:
$210.17M
COST:
$12.48B
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Return for Risk
WMK vs. COST — Risk / Return Rank
WMK
COST
WMK vs. COST - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Weis Markets, Inc. (WMK) and Costco Wholesale Corporation (COST). 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.
| WMK | COST | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.47 | ||
| Sortino ratioReturn per unit of downside risk | +0.72 | ||
| Omega ratioGain probability vs. loss probability | 1.03 | 0.94 | +0.08 |
| Calmar ratioReturn relative to maximum drawdown | 0.04 | -0.44 | +0.48 |
| Martin ratioReturn relative to average drawdown | 0.07 | -0.88 | +0.95 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| WMK | COST | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.03 | -0.44 | +0.47 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.32 | 0.94 | -0.62 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.20 | 1.02 | -0.82 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.19 | 0.59 | -0.40 |
Drawdowns
WMK vs. COST - Drawdown Comparison
The maximum WMK drawdown since its inception was -48.66%, smaller than the maximum COST drawdown of -53.39%. Use the drawdown chart below to compare losses from any high point for WMK and COST.
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Drawdown Indicators
| WMK | COST | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -48.66% | -53.39% | +4.73% |
Max Drawdown (1Y)Largest decline over 1 year | -20.22% | -18.95% | -1.27% |
Max Drawdown (3Y)Largest decline over 3 years | -29.37% | -20.74% | -8.63% |
Max Drawdown (5Y)Largest decline over 5 years | -36.18% | -31.40% | -4.78% |
Max Drawdown (10Y)Largest decline over 10 years | -48.66% | -31.40% | -17.26% |
Current DrawdownCurrent decline from peak | -16.10% | -12.11% | -3.99% |
Average DrawdownAverage peak-to-trough decline | -16.07% | -13.36% | -2.71% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 10.71% | 9.86% | +0.85% |
Volatility
WMK vs. COST - Volatility Comparison
The current volatility for Weis Markets, Inc. (WMK) is 6.50%, while Costco Wholesale Corporation (COST) has a volatility of 8.05%. This indicates that WMK experiences smaller price fluctuations and is considered to be less risky than COST based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| WMK | COST | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.50% | 8.05% | -1.55% |
Volatility (6M)Calculated over the trailing 6-month period | 18.57% | 14.83% | +3.74% |
Volatility (1Y)Calculated over the trailing 1-year period | 25.86% | 19.12% | +6.74% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 28.48% | 22.73% | +5.75% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 29.73% | 21.95% | +7.78% |
Dividends
WMK vs. COST - Dividend Comparison
WMK's dividend yield for the trailing twelve months is around 1.84%, more than COST's 0.56% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
COST Costco Wholesale Corporation | 0.56% | 0.59% | 0.49% | 2.87% | 0.76% | 0.54% | 3.38% | 0.86% | 1.08% | 4.81% | 1.09% | 4.06% |
WMK Weis Markets, Inc. | 1.84% | 2.12% | 2.01% | 2.13% | 1.58% | 1.90% | 2.59% | 3.06% | 2.53% | 2.90% | 1.80% | 2.71% |
Financials
WMK vs. COST - Financials Comparison
This section allows you to compare key financial metrics between Weis Markets, Inc. and Costco Wholesale Corporation. 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
WMK vs. COST - Profitability Comparison
WMK - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Weis Markets, Inc. reported a gross profit of 330.25M and revenue of 1.26B. Therefore, the gross margin over that period was 26.3%.
COST - Gross Margin
Gross margin is calculated as gross profit divided by revenue. For the three months ending on Jun 2026, Costco Wholesale Corporation reported a gross profit of -17.68B and revenue of 70.53B. Therefore, the gross margin over that period was -25.1%.
WMK - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Weis Markets, Inc. reported an operating income of 35.70M and revenue of 1.26B, resulting in an operating margin of 2.8%.
COST - Operating Margin
Operating margin is calculated as operating income divided by revenue. For the three months ending on Jun 2026, Costco Wholesale Corporation reported an operating income of 2.82B and revenue of 70.53B, resulting in an operating margin of 4.0%.
WMK - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Weis Markets, Inc. reported a net income of 27.85M and revenue of 1.26B, resulting in a net margin of 2.2%.
COST - Net Margin
Net margin is calculated as net income divided by revenue. For the three months ending on Jun 2026, Costco Wholesale Corporation reported a net income of 2.19B and revenue of 70.53B, resulting in a net margin of 3.1%.
Frequently Asked Questions
WMK and COST have a correlation of 0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
COST has higher volatility (8.05%) compared to WMK (6.50%). In terms of maximum drawdown, WMK dropped -48.66% vs COST's -53.39%.
WMK currently has the higher Sharpe Ratio (0.03 vs -0.44), 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.
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