RYBIX vs. MLOZX

Last updated Jun 4, 2026

RYBIX (Rydex Basic Materials Fund) and MLOZX (Cohen & Steers MLP & Energy Opportunity Fund, Inc.) are both Energy Equities funds. Over the past 10 years, RYBIX returned 11.58%/yr vs 10.55%/yr for MLOZX. A 0.64 correlation means they provide meaningful diversification when combined. RYBIX charges 1.36%/yr vs 0.90%/yr for MLOZX.

Performance

RYBIX vs. MLOZX - Performance Comparison

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

Returns By Period

In the year-to-date period, RYBIX achieves a 16.06% return, which is significantly lower than MLOZX's 36.18% return. Over the past 10 years, RYBIX has outperformed MLOZX with an annualized return of 11.58%, while MLOZX has yielded a comparatively lower 10.55% annualized return.

RYBIX

• 1D: 1.45%
• 1M: 5.29%
• YTD: 16.06%
• 6M: 19.92%
• 1Y: 42.23%
• 3Y*: 18.11%
• 5Y*: 8.49%
• 10Y*: 11.58%

MLOZX

• 1D: 1.79%
• 1M: 1.71%
• YTD: 36.18%
• 6M: 33.41%
• 1Y: 58.83%
• 3Y*: 25.68%
• 5Y*: 19.48%
• 10Y*: 10.55%

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

RYBIX vs. MLOZX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYBIX Rydex Basic Materials Fund	16.06%	33.49%	-2.10%	9.49%	-9.14%	23.42%	20.55%	21.82%	-17.27%	21.81%
MLOZX Cohen & Steers MLP & Energy Opportunity Fund, Inc.	36.18%	17.35%	12.16%	10.49%	21.10%	39.09%	-26.70%	12.62%	-13.43%	0.33%

Correlation

The correlation between RYBIX and MLOZX is 0.34, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.34
Correlation (3Y) Calculated over the trailing 3-year period	0.52
Correlation (5Y) Calculated over the trailing 5-year period	0.62
Correlation (10Y) Calculated over the trailing 10-year period	0.63
Correlation (All Time) Calculated using the full available price history since Dec 24, 2013	0.64

Over the past year, the correlation between RYBIX and MLOZX has dropped to 0.34 - well below their long-term average of 0.64, suggesting their price drivers have been diverging.

Return for Risk

RYBIX vs. MLOZX — Risk / Return Rank

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

RYBIX

RYBIX Risk / Return Rank: 36
RYBIX Sharpe Ratio Rank: 40
RYBIX Sortino Ratio Rank: 33
RYBIX Omega Ratio Rank: 35
RYBIX Calmar Ratio Rank: 37
RYBIX Martin Ratio Rank: 36

MLOZX

MLOZX Risk / Return Rank: 97
MLOZX Sharpe Ratio Rank: 99
MLOZX Sortino Ratio Rank: 97
MLOZX Omega Ratio Rank: 94
MLOZX Calmar Ratio Rank: 99
MLOZX Martin Ratio Rank: 99

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.

RYBIX vs. MLOZX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rydex Basic Materials Fund (RYBIX) 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.

	RYBIX	MLOZX	Difference
Sharpe ratio: Return per unit of total volatility	1.85	4.27	-2.42
Sortino ratio: Return per unit of downside risk	2.38	5.60	-3.22
Omega ratio: Gain probability vs. loss probability	1.31	1.73	-0.41
Calmar ratio: Return relative to maximum drawdown	2.30	13.16	-10.86
Martin ratio: Return relative to average drawdown	8.00	40.52	-32.52
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RYBIX vs. MLOZX - Sharpe Ratio Comparison

The current RYBIX Sharpe Ratio is 1.85, which is lower than the MLOZX Sharpe Ratio of 4.27. The chart below compares the historical Sharpe Ratios of RYBIX and MLOZX, 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

	RYBIX	MLOZX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.85	4.27	-2.42
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.39	1.07	-0.67
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.52	0.44	+0.08
Sharpe Ratio (All Time) Calculated using the full available price history	0.29	0.29	0.00

Drawdowns

RYBIX vs. MLOZX - Drawdown Comparison

The maximum RYBIX drawdown since its inception was -65.66%, smaller than the maximum MLOZX drawdown of -72.01%. Use the drawdown chart below to compare losses from any high point for RYBIX and MLOZX.

Drawdown Indicators

	RYBIX	MLOZX	Difference
Max Drawdown Largest peak-to-trough decline	-65.66%	-72.01%	+6.35%
Max Drawdown (1Y) Largest decline over 1 year	-18.86%	-4.71%	-14.15%
Max Drawdown (3Y) Largest decline over 3 years	-21.29%	-20.84%	-0.45%
Max Drawdown (5Y) Largest decline over 5 years	-27.06%	-20.84%	-6.22%
Max Drawdown (10Y) Largest decline over 10 years	-43.19%	-64.94%	+21.75%
Current Drawdown Current decline from peak	-6.23%	-0.08%	-6.15%
Average Drawdown Average peak-to-trough decline	-14.20%	-20.64%	+6.44%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.42%	1.52%	+3.90%

Volatility

RYBIX vs. MLOZX - Volatility Comparison

Rydex Basic Materials Fund (RYBIX) has a higher volatility of 8.52% compared to Cohen & Steers MLP & Energy Opportunity Fund, Inc. (MLOZX) at 5.09%. This indicates that RYBIX's price experiences larger fluctuations and is considered to be riskier than MLOZX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RYBIX	MLOZX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.52%	5.09%	+3.43%
Volatility (6M) Calculated over the trailing 6-month period	19.80%	11.23%	+8.57%
Volatility (1Y) Calculated over the trailing 1-year period	23.57%	14.51%	+9.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.63%	18.36%	+3.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.26%	24.10%	-1.84%

RYBIX vs. MLOZX - Expense Ratio Comparison

RYBIX has a 1.36% expense ratio, which is higher than MLOZX's 0.90% expense ratio.

Dividends

RYBIX vs. MLOZX - Dividend Comparison

RYBIX's dividend yield for the trailing twelve months is around 7.24%, more than MLOZX's 1.79% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MLOZX Cohen & Steers MLP & Energy Opportunity Fund, Inc.	1.79%	1.71%	10.24%	4.61%	3.66%	3.08%	6.57%	6.21%	4.44%	3.86%	3.72%	6.05%
RYBIX Rydex Basic Materials Fund	7.24%	8.41%	11.79%	2.12%	1.68%	1.89%	2.20%	4.42%	1.59%	0.40%	1.08%	2.16%

Frequently Asked Questions

Can I hold both RYBIX and MLOZX in my portfolio?

RYBIX and MLOZX have a correlation of 0.34, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RYBIX or MLOZX?

RYBIX has higher volatility (8.52%) compared to MLOZX (5.09%). In terms of maximum drawdown, RYBIX dropped -65.66% vs MLOZX's -72.01%.

Which has better risk-adjusted returns?

MLOZX currently has the higher Sharpe Ratio (4.27 vs 1.85), 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.