AMZA vs. MDST

Last updated Jun 4, 2026

AMZA (InfraCap MLP ETF) and MDST (Westwood Salient Enhanced Midstream Income ETF) are both exchange-traded funds - AMZA is a MLPs fund actively managed by Virtus Investment Partners, while MDST is a Energy Equities fund actively managed by Westwood. Both are actively managed. Over the past year, AMZA returned 17.55% vs 17.62% for MDST. A 0.75 correlation means they provide meaningful diversification when combined. AMZA charges 2.01%/yr vs 0.80%/yr for MDST.

Performance

AMZA vs. MDST - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in InfraCap MLP ETF (AMZA) and Westwood Salient Enhanced Midstream Income ETF (MDST). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AMZA achieves a 22.22% return, which is significantly higher than MDST's 14.94% return.

AMZA

• 1D: 0.39%
• 1M: -0.92%
• YTD: 22.22%
• 6M: 20.41%
• 1Y: 17.55%
• 3Y*: 22.02%
• 5Y*: 19.41%
• 10Y*: 4.86%

MDST

• 1D: 0.14%
• 1M: -0.74%
• YTD: 14.94%
• 6M: 14.77%
• 1Y: 17.62%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

AMZA vs. MDST - Yearly Performance Comparison

	2026 (YTD)	2025	2024
AMZA InfraCap MLP ETF	22.22%	0.17%	10.36%
MDST Westwood Salient Enhanced Midstream Income ETF	14.94%	7.09%	17.29%

Correlation

The correlation between AMZA and MDST is 0.72, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.72
Correlation (All Time) Calculated using the full available price history since Apr 10, 2024	0.75

The correlation between AMZA and MDST has been stable across timeframes, ranging from 0.72 to 0.75 - a consistent structural relationship.

AMZA vs. MDST - Sectors Allocation Comparison

Sectors	AMZA	MDST
Energy	99.8%	100.0%
Utilities	0.2%	-
Basic Materials	-	-
Communication Services	-	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Financial Services	-	-
Healthcare	-	-
Industrials	-	-
Real Estate	-	-
Technology	-	-

Return for Risk

AMZA vs. MDST — Risk / Return Rank

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

AMZA

AMZA Risk / Return Rank: 27
AMZA Sharpe Ratio Rank: 27
AMZA Sortino Ratio Rank: 27
AMZA Omega Ratio Rank: 25
AMZA Calmar Ratio Rank: 29
AMZA Martin Ratio Rank: 26

MDST

MDST Risk / Return Rank: 44
MDST Sharpe Ratio Rank: 41
MDST Sortino Ratio Rank: 42
MDST Omega Ratio Rank: 41
MDST Calmar Ratio Rank: 53
MDST Martin Ratio Rank: 45

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.

AMZA vs. MDST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for InfraCap MLP ETF (AMZA) and Westwood Salient Enhanced Midstream Income ETF (MDST). 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.

	AMZA	MDST	Difference
Sharpe ratio: Return per unit of total volatility	1.00	1.47	-0.47
Sortino ratio: Return per unit of downside risk	1.48	2.13	-0.65
Omega ratio: Gain probability vs. loss probability	1.17	1.27	-0.09
Calmar ratio: Return relative to maximum drawdown	1.45	2.63	-1.18
Martin ratio: Return relative to average drawdown	3.65	7.46	-3.81
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AMZA vs. MDST - Sharpe Ratio Comparison

The current AMZA Sharpe Ratio is 1.00, which is lower than the MDST Sharpe Ratio of 1.47. The chart below compares the historical Sharpe Ratios of AMZA and MDST, 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

	AMZA	MDST	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.00	1.47	-0.47
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.76	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.13	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.02	1.16	-1.19

Drawdowns

AMZA vs. MDST - Drawdown Comparison

The maximum AMZA drawdown since its inception was -91.46%, which is greater than MDST's maximum drawdown of -14.19%. Use the drawdown chart below to compare losses from any high point for AMZA and MDST.

Drawdown Indicators

	AMZA	MDST	Difference
Max Drawdown Largest peak-to-trough decline	-91.46%	-14.19%	-77.27%
Max Drawdown (1Y) Largest decline over 1 year	-12.16%	-6.74%	-5.42%
Max Drawdown (3Y) Largest decline over 3 years	-18.56%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-25.15%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-86.84%	—	—
Current Drawdown Current decline from peak	-10.19%	-3.53%	-6.66%
Average Drawdown Average peak-to-trough decline	-45.02%	-2.17%	-42.85%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.82%	2.37%	+2.45%

Volatility

AMZA vs. MDST - Volatility Comparison

InfraCap MLP ETF (AMZA) has a higher volatility of 5.80% compared to Westwood Salient Enhanced Midstream Income ETF (MDST) at 4.87%. This indicates that AMZA's price experiences larger fluctuations and is considered to be riskier than MDST based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AMZA	MDST	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.80%	4.87%	+0.93%
Volatility (6M) Calculated over the trailing 6-month period	13.40%	8.36%	+5.04%
Volatility (1Y) Calculated over the trailing 1-year period	17.72%	12.12%	+5.60%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.84%	16.11%	+9.73%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	37.25%	16.11%	+21.14%

AMZA vs. MDST - Expense Ratio Comparison

AMZA has a 2.01% expense ratio, which is higher than MDST's 0.80% expense ratio.

Dividends

AMZA vs. MDST - Dividend Comparison

AMZA's dividend yield for the trailing twelve months is around 8.02%, less than MDST's 9.33% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AMZA InfraCap MLP ETF	8.02%	8.81%	7.29%	9.40%	7.65%	10.24%	22.13%	19.47%	34.46%	24.16%	18.36%	18.21%
MDST Westwood Salient Enhanced Midstream Income ETF	9.33%	10.22%	6.60%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both AMZA and MDST in my portfolio?

AMZA and MDST have a correlation of 0.72, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AMZA or MDST?

AMZA has higher volatility (5.80%) compared to MDST (4.87%). In terms of maximum drawdown, AMZA dropped -91.46% vs MDST's -14.19%.

Which ETF is better, AMZA or MDST?

On 1-year performance, MDST leads with 17.62% vs 17.55% for AMZA. On fees, MDST is cheaper at 0.80% per year. On volatility, MDST has been the lower-risk option at 4.87%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, AMZA or MDST?

Over the 1-year period, MDST has performed better with a 17.62% return vs 17.55%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, AMZA or MDST?

MDST is cheaper with a 0.80% expense ratio, compared with 2.01% for AMZA.

Which ETF pays a higher dividend yield, AMZA or MDST?

MDST has the higher dividend yield at 9.33%, compared with 8.02% for AMZA.

What is the main difference between AMZA and MDST?

AMZA is categorized as MLPs, while MDST is Energy Equities. They also come from different issuers: Virtus Investment Partners and Westwood. Their fees differ too: 2.01% for AMZA and 0.80% for MDST.

Which has better risk-adjusted returns?

MDST currently has the higher Sharpe Ratio (1.47 vs 1.00), 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.