AMLP vs. COST

Last updated Jun 13, 2026

AMLP (Alerian MLP ETF) is MLPs fund tracking the Alerian MLP Infrastructure Index, while COST (Costco Wholesale Corporation) is a stock. Over the past 10 years, AMLP returned 6.92%/yr vs 22.27%/yr for COST. At a 0.18 correlation, their price movements are largely independent.

Performance

AMLP vs. COST - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Alerian MLP ETF (AMLP) and Costco Wholesale Corporation (COST). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AMLP achieves a 15.29% return, which is significantly higher than COST's 14.24% return. Over the past 10 years, AMLP has underperformed COST with an annualized return of 6.92%, while COST has yielded a comparatively higher 22.27% annualized return.

AMLP

• 1D: -0.34%
• 1M: -1.96%
• YTD: 15.29%
• 6M: 14.35%
• 1Y: 14.76%
• 3Y*: 20.22%
• 5Y*: 15.26%
• 10Y*: 6.92%

COST

• 1D: 0.68%
• 1M: -4.91%
• YTD: 14.24%
• 6M: 11.38%
• 1Y: -1.48%
• 3Y*: 25.12%
• 5Y*: 22.12%
• 10Y*: 22.27%

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

AMLP vs. COST - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AMLP Alerian MLP ETF	15.29%	5.78%	22.76%	21.40%	25.47%	39.09%	-32.26%	5.99%	-12.67%	-7.89%
COST Costco Wholesale Corporation	14.24%	-5.39%	39.62%	49.00%	-19.05%	51.82%	32.67%	45.70%	10.60%	22.37%

Correlation

The correlation between AMLP and COST is 0.12, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.12
Correlation (3Y) Calculated over the trailing 3-year period	0.14
Correlation (5Y) Calculated over the trailing 5-year period	0.17
Correlation (10Y) Calculated over the trailing 10-year period	0.18
Correlation (All Time) Calculated using the full available price history since Aug 25, 2010	0.18

Return for Risk

AMLP vs. COST — Risk / Return Rank

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

AMLP

AMLP Risk / Return Rank: 38
AMLP Sharpe Ratio Rank: 40
AMLP Sortino Ratio Rank: 39
AMLP Omega Ratio Rank: 37
AMLP Calmar Ratio Rank: 38
AMLP Martin Ratio Rank: 39

COST

COST Risk / Return Rank: 37
COST Sharpe Ratio Rank: 40
COST Sortino Ratio Rank: 32
COST Omega Ratio Rank: 32
COST Calmar Ratio Rank: 40
COST Martin Ratio Rank: 39

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.

AMLP vs. COST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Alerian MLP ETF (AMLP) 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.

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.

	AMLP	COST	Difference
Sharpe ratio: Return per unit of total volatility	1.25	-0.08	+1.33
Sortino ratio: Return per unit of downside risk	1.79	0.02	+1.77
Omega ratio: Gain probability vs. loss probability	1.22	1.00	+0.22
Calmar ratio: Return relative to maximum drawdown	1.66	-0.10	+1.76
Martin ratio: Return relative to average drawdown	5.35	-0.22	+5.58

AMLP vs. COST - Sharpe Ratio Comparison

The current AMLP Sharpe Ratio is 1.25, which is higher than the COST Sharpe Ratio of -0.08. The chart below compares the historical Sharpe Ratios of AMLP 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.

Drawdowns

AMLP vs. COST - Drawdown Comparison

The maximum AMLP drawdown since its inception was -77.19%, which is greater than COST's maximum drawdown of -53.39%. Use the drawdown chart below to compare losses from any high point for AMLP and COST.

Drawdown Indicators

	AMLP	COST	Difference
Max Drawdown Largest peak-to-trough decline	-77.19%	-53.39%	-23.80%
Max Drawdown (1Y) Largest decline over 1 year	-8.94%	-15.14%	+6.20%
Max Drawdown (3Y) Largest decline over 3 years	-14.27%	-20.74%	+6.47%
Max Drawdown (5Y) Largest decline over 5 years	-20.92%	-31.40%	+10.48%
Max Drawdown (10Y) Largest decline over 10 years	-72.62%	-31.40%	-41.22%
Current Drawdown Current decline from peak	-4.94%	-10.23%	+5.29%
Average Drawdown Average peak-to-trough decline	-17.37%	-13.36%	-4.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.77%	6.67%	-3.90%

Volatility

AMLP vs. COST - Volatility Comparison

The current volatility for Alerian MLP ETF (AMLP) is 4.71%, while Costco Wholesale Corporation (COST) has a volatility of 7.44%. This indicates that AMLP 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

	AMLP	COST	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.71%	7.44%	-2.73%
Volatility (6M) Calculated over the trailing 6-month period	8.77%	14.53%	-5.76%
Volatility (1Y) Calculated over the trailing 1-year period	11.84%	18.80%	-6.96%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.95%	22.72%	-2.77%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.67%	21.95%	+5.72%

Dividends

AMLP vs. COST - Dividend Comparison

AMLP's dividend yield for the trailing twelve months is around 7.71%, more than COST's 0.55% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AMLP Alerian MLP ETF	7.71%	8.36%	7.70%	7.86%	7.70%	8.55%	12.31%	9.12%	9.29%	7.97%	8.09%	9.84%
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%

Frequently Asked Questions

Can I hold both AMLP and COST in my portfolio?

AMLP and COST have a correlation of 0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AMLP or COST?

COST has higher volatility (7.44%) compared to AMLP (4.71%). In terms of maximum drawdown, AMLP dropped -77.19% vs COST's -53.39%.

Which has better risk-adjusted returns?

AMLP currently has the higher Sharpe Ratio (1.25 vs -0.08), 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.