AIL.DE vs. COST

Last updated Jun 5, 2026

AIL.DE (Air Liquide SA) and COST (Costco Wholesale Corporation) are both stocks. AIL.DE operates in Specialty Chemicals (Basic Materials), while COST operates in Discount Stores (Consumer Defensive). Over the past 10 years, AIL.DE returned 13.46%/yr vs 22.16%/yr for COST. At a 0.14 correlation, their price movements are largely independent.

Performance

AIL.DE vs. COST - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in Air Liquide SA (AIL.DE) and Costco Wholesale Corporation (COST). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

AIL.DE is traded in EUR, while COST is traded in USD. To make them comparable, the COST values have been converted to EUR using the latest available exchange rates.

Returns By Period

In the year-to-date period, AIL.DE achieves a 15.64% return, which is significantly higher than COST's 14.36% return. Over the past 10 years, AIL.DE has underperformed COST with an annualized return of 13.46%, while COST has yielded a comparatively higher 22.16% annualized return.

AIL.DE

• 1D: 1.02%
• 1M: 3.34%
• YTD: 15.64%
• 6M: 13.67%
• 1Y: 0.82%
• 3Y*: 10.18%
• 5Y*: 11.38%
• 10Y*: 13.46%

COST

• 1D: 0.95%
• 1M: -3.70%
• YTD: 14.36%
• 6M: 9.14%
• 1Y: -8.58%
• 3Y*: 21.67%
• 5Y*: 22.64%
• 10Y*: 22.16%

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

AIL.DE vs. COST - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AIL.DE Air Liquide SA	15.64%	5.45%	-1.53%	34.16%	-2.67%	16.10%	9.17%	33.69%	3.31%	13.80%
COST Costco Wholesale Corporation	14.36%	-16.62%	48.84%	44.54%	-14.03%	63.18%	21.73%	48.99%	15.79%	7.33%

Correlation

The correlation between AIL.DE and COST is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.13
Correlation (3Y) Calculated over the trailing 3-year period	0.07
Correlation (5Y) Calculated over the trailing 5-year period	0.10
Correlation (10Y) Calculated over the trailing 10-year period	0.13
Correlation (All Time) Calculated using the full available price history since Aug 28, 2007	0.14

Return for Risk

AIL.DE vs. COST — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

AIL.DE

AIL.DE Risk / Return Rank: 40
AIL.DE Sharpe Ratio Rank: 43
AIL.DE Sortino Ratio Rank: 35
AIL.DE Omega Ratio Rank: 35
AIL.DE Calmar Ratio Rank: 42
AIL.DE Martin Ratio Rank: 42

COST

COST Risk / Return Rank: 24
COST Sharpe Ratio Rank: 26
COST Sortino Ratio Rank: 22
COST Omega Ratio Rank: 23
COST Calmar Ratio Rank: 27
COST Martin Ratio Rank: 22

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

AIL.DE vs. COST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Air Liquide SA (AIL.DE) 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.

	AIL.DE	COST	Difference
Sharpe ratio: Return per unit of total volatility	0.05	-0.42	+0.47
Sortino ratio: Return per unit of downside risk	0.20	-0.46	+0.66
Omega ratio: Gain probability vs. loss probability	1.02	0.95	+0.08
Calmar ratio: Return relative to maximum drawdown	0.05	-0.46	+0.51
Martin ratio: Return relative to average drawdown	0.10	-0.98	+1.08
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AIL.DE vs. COST - Sharpe Ratio Comparison

The current AIL.DE Sharpe Ratio is 0.05, which is higher than the COST Sharpe Ratio of -0.42. The chart below compares the historical Sharpe Ratios of AIL.DE and COST, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	AIL.DE	COST	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.05	-0.42	+0.47
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.58	0.98	-0.40
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.66	0.98	-0.32
Sharpe Ratio (All Time) Calculated using the full available price history	0.45	0.83	-0.38

Drawdowns

AIL.DE vs. COST - Drawdown Comparison

The maximum AIL.DE drawdown since its inception was -39.86%, roughly equal to the maximum COST drawdown of -38.85%. Use the drawdown chart below to compare losses from any high point for AIL.DE and COST.

Drawdown Indicators

	AIL.DE	COST	Difference
Max Drawdown Largest peak-to-trough decline	-39.86%	-38.85%	-1.01%
Max Drawdown (1Y) Largest decline over 1 year	-15.87%	-18.64%	+2.77%
Max Drawdown (3Y) Largest decline over 3 years	-16.33%	-29.57%	+13.24%
Max Drawdown (5Y) Largest decline over 5 years	-23.46%	-29.57%	+6.11%
Max Drawdown (10Y) Largest decline over 10 years	-30.48%	-29.57%	-0.91%
Current Drawdown Current decline from peak	-1.48%	-18.19%	+16.71%
Average Drawdown Average peak-to-trough decline	-7.34%	-8.13%	+0.79%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.99%	11.31%	-3.32%

Volatility

AIL.DE vs. COST - Volatility Comparison

The current volatility for Air Liquide SA (AIL.DE) is 6.63%, while Costco Wholesale Corporation (COST) has a volatility of 8.72%. This indicates that AIL.DE 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.

Volatility by Period

	AIL.DE	COST	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.63%	8.72%	-2.09%
Volatility (6M) Calculated over the trailing 6-month period	14.02%	15.83%	-1.81%
Volatility (1Y) Calculated over the trailing 1-year period	17.42%	20.42%	-3.00%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.34%	23.10%	-3.76%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.44%	22.68%	-2.24%

Dividends

AIL.DE vs. COST - Dividend Comparison

AIL.DE's dividend yield for the trailing twelve months is around 2.04%, more than COST's 0.55% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AIL.DE Air Liquide SA	2.04%	2.06%	1.88%	1.67%	1.97%	1.79%	2.00%	1.90%	2.49%	2.24%	2.49%	2.49%
COST Costco Wholesale Corporation	0.55%	0.59%	0.49%	2.87%	0.76%	0.54%	3.38%	0.86%	1.08%	4.81%	1.09%	4.06%

Financials

Frequently Asked Questions

Can I hold both AIL.DE and COST in my portfolio?

AIL.DE and COST have a correlation of 0.13, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.