IMLPX vs. MLOZX

Last updated Aug 1, 2026

IMLPX (MainGate MLP Fund) and MLOZX (Cohen & Steers MLP & Energy Opportunity Fund, Inc.) are both Energy Equities funds. Their correlation of 0.89 means they have usually moved in the same direction. IMLPX charges 1.44%/yr vs 0.90%/yr for MLOZX.

Performance

IMLPX vs. MLOZX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MainGate MLP Fund (IMLPX) and Cohen & Steers MLP & Energy Opportunity Fund, Inc. (MLOZX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

IMLPX

• 1D: 0.25%
• 1M: 3.28%
• 6M: 15.71%
• YTD: 23.80%
• 1Y: 24.31%
• 3Y*: 21.80%
• 5Y*: 23.56%
• 10Y*: 9.83%
• ALL TIME*: 7.85%

MLOZX

• 1D: —
• 1M: —
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
IMLPX MainGate MLP Fund	$0.00	$0.00	$0.00

IMLPX vs. MLOZX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IMLPX MainGate MLP Fund	23.80%	2.77%	34.76%	20.26%	33.69%	44.24%	-27.81%	7.14%	-22.20%	-7.92%
MLOZX Cohen & Steers MLP & Energy Opportunity Fund, Inc.	32.43%	17.35%	12.16%	10.49%	21.10%	39.09%	-26.70%	12.62%	-13.43%	0.33%

Correlation

The correlation between IMLPX and MLOZX is 0.54, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.54
Correlation (3Y) Balances recent behavior with more history.	0.68
Correlation (5Y) Shows whether the relationship held over a longer period.	0.81
Correlation (10Y) Provides a long-term view across more market conditions.	0.89
Correlation (All Time) Calculated using the full available price history since Dec 23, 2013	0.89

Over the past year, the correlation between IMLPX and MLOZX has dropped to 0.54 - well below their long-term average of 0.89, suggesting their price drivers have been diverging.

Return for Risk

IMLPX vs. MLOZX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

IMLPX

IMLPX Risk / Return Rank: 73
IMLPX Sharpe Ratio Rank: 73
IMLPX Sortino Ratio Rank: 69
IMLPX Omega Ratio Rank: 64
IMLPX Calmar Ratio Rank: 92
IMLPX Martin Ratio Rank: 65

MLOZX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

IMLPX vs. MLOZX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MainGate MLP Fund (IMLPX) and Cohen & Steers MLP & Energy Opportunity Fund, Inc. (MLOZX). 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.

	IMLPX	MLOZX	Difference
Sharpe ratio: Return per unit of total volatility	1.73	—	—
Sortino ratio: Return per unit of downside risk	2.42	—	—
Omega ratio: Gain probability vs. loss probability	1.29	—	—
Calmar ratio: Return relative to maximum drawdown	3.72	—	—
Martin ratio: Return relative to average drawdown	8.46	—	—

Drawdowns

Drawdown Indicators

	IMLPX	MLOZX	Difference
Max Drawdown Largest peak-to-trough decline	-76.39%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-6.47%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-15.93%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-22.00%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-72.19%	—	—
Current Drawdown Current decline from peak	-2.53%	—	—
Average Drawdown Average peak-to-trough decline	-17.54%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	2.84%	—	—

Volatility

Volatility by Period

	IMLPX	MLOZX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.92%	—	—
Volatility (6M) Calculated over the trailing 6-month period	11.08%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	13.87%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.84%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.44%	—	—

IMLPX vs. MLOZX - Expense Ratio Comparison

IMLPX has a 1.44% expense ratio, which is higher than MLOZX's 0.90% expense ratio.

Dividends

IMLPX vs. MLOZX - Dividend Comparison

IMLPX's dividend yield for the trailing twelve months is around 4.53%, more than MLOZX's 1.45% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IMLPX MainGate MLP Fund	4.53%	4.55%	4.22%	5.04%	5.75%	7.22%	11.02%	9.83%	9.65%	6.98%	6.02%	7.01%
MLOZX Cohen & Steers MLP & Energy Opportunity Fund, Inc.	1.45%	1.71%	10.24%	4.61%	3.66%	3.08%	6.57%	6.21%	4.44%	3.86%	3.72%	6.05%

Frequently Asked Questions

Can I hold both IMLPX and MLOZX in my portfolio?

IMLPX and MLOZX have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.