MDST vs. AMZA

Last updated Apr 1, 2026

Compare and contrast key facts about Westwood Salient Enhanced Midstream Income ETF (MDST) and InfraCap MLP ETF (AMZA).

MDST and AMZA are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. MDST is an actively managed fund by Westwood. It was launched on Apr 8, 2024. AMZA is an actively managed fund by Virtus Investment Partners. It was launched on Oct 7, 2014.

Performance

MDST vs. AMZA - Performance Comparison

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

MDST vs. AMZA - Yearly Performance Comparison

	2026 (YTD)	2025	2024
MDST Westwood Salient Enhanced Midstream Income ETF	11.80%	7.09%	17.29%
AMZA InfraCap MLP ETF	19.38%	0.17%	10.36%

Returns By Period

In the year-to-date period, MDST achieves a 11.80% return, which is significantly lower than AMZA's 19.38% return.

MDST

• 1D: -1.07%
• 1M: 1.13%
• YTD: 11.80%
• 6M: 12.54%
• 1Y: 13.64%
• 3Y*: —
• 5Y*: —
• 10Y*: —

AMZA

• 1D: -1.45%
• 1M: 2.49%
• YTD: 19.38%
• 6M: 20.02%
• 1Y: 5.74%
• 3Y*: 22.86%
• 5Y*: 23.82%
• 10Y*: 7.88%

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

MDST vs. AMZA - Expense Ratio Comparison

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

AMZA

InfraCap MLP ETF

MDST

Westwood Salient Enhanced Midstream Income ETF

Return for Risk

MDST vs. AMZA — Risk / Return Rank

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

MDST

MDST Risk / Return Rank: 42
MDST Sharpe Ratio Rank: 43
MDST Sortino Ratio Rank: 37
MDST Omega Ratio Rank: 49
MDST Calmar Ratio Rank: 39
MDST Martin Ratio Rank: 40

AMZA

AMZA Risk / Return Rank: 19
AMZA Sharpe Ratio Rank: 20
AMZA Sortino Ratio Rank: 19
AMZA Omega Ratio Rank: 19
AMZA Calmar Ratio Rank: 19
AMZA Martin Ratio Rank: 16

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.

MDST vs. AMZA - Risk-Adjusted Trends Comparison

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

	MDST	AMZA	Difference
Sharpe ratio Return per unit of total volatility	0.79	0.25	+0.54
Sortino ratio Return per unit of downside risk	1.07	0.47	+0.60
Omega ratio Gain probability vs. loss probability	1.19	1.07	+0.12
Calmar ratio Return relative to maximum drawdown	0.97	0.30	+0.67
Martin ratio Return relative to average drawdown	3.74	0.55	+3.19
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MDST vs. AMZA - Sharpe Ratio Comparison

The current MDST Sharpe Ratio is 0.79, which is higher than the AMZA Sharpe Ratio of 0.25. The chart below compares the historical Sharpe Ratios of MDST and AMZA, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	MDST	AMZA	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.79	0.25	+0.54
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.92	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.21	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.16	-0.03	+1.19

Correlation

The correlation between MDST and AMZA is 0.74, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

MDST vs. AMZA - Dividend Comparison

MDST's dividend yield for the trailing twelve months is around 9.44%, more than AMZA's 7.88% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MDST Westwood Salient Enhanced Midstream Income ETF	9.44%	10.22%	6.60%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
AMZA InfraCap MLP ETF	7.88%	8.81%	7.29%	9.40%	7.65%	10.24%	22.13%	19.47%	34.46%	24.16%	18.36%	18.21%

Drawdowns

MDST vs. AMZA - Drawdown Comparison

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

Drawdown Indicators

	MDST	AMZA	Difference
Max Drawdown Largest peak-to-trough decline	-14.19%	-91.46%	+77.27%
Max Drawdown (1Y) Largest decline over 1 year	-14.19%	-17.90%	+3.71%
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	-1.84%	-12.28%	+10.44%
Average Drawdown Average peak-to-trough decline	-2.18%	-45.54%	+43.36%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.68%	9.91%	-6.23%

Volatility

MDST vs. AMZA - Volatility Comparison

The current volatility for Westwood Salient Enhanced Midstream Income ETF (MDST) is 2.15%, while InfraCap MLP ETF (AMZA) has a volatility of 5.70%. This indicates that MDST experiences smaller price fluctuations and is considered to be less risky than AMZA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MDST	AMZA	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.15%	5.70%	-3.55%
Volatility (6M) Calculated over the trailing 6-month period	7.62%	12.41%	-4.79%
Volatility (1Y) Calculated over the trailing 1-year period	17.38%	23.23%	-5.85%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.23%	25.96%	-9.73%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.23%	37.45%	-21.22%