RMMZ vs. RFM

Last updated Apr 1, 2026

Compare and contrast key facts about RiverNorth Managed Duration Municipal Income Fund II Inc. (RMMZ) and RiverNorth Flexible Municipal Income Fund (RFM).

RMMZ is managed by RiverNorth. RFM is managed by RiverNorth.

Performance

RMMZ vs. RFM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in RiverNorth Managed Duration Municipal Income Fund II Inc. (RMMZ) and RiverNorth Flexible Municipal Income Fund (RFM). The values are adjusted to include any dividend payments, if applicable.

RMMZ vs. RFM - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
RMMZ RiverNorth Managed Duration Municipal Income Fund II Inc.	3.01%	4.99%	2.72%	11.22%	-12.90%
RFM RiverNorth Flexible Municipal Income Fund	2.29%	1.59%	3.24%	6.50%	-16.07%

Returns By Period

In the year-to-date period, RMMZ achieves a 3.01% return, which is significantly higher than RFM's 2.29% return.

RMMZ

• 1D: 0.00%
• 1M: -1.11%
• YTD: 3.01%
• 6M: 1.64%
• 1Y: 4.20%
• 3Y*: 6.91%
• 5Y*: —
• 10Y*: —

RFM

• 1D: 2.04%
• 1M: -3.44%
• YTD: 2.29%
• 6M: 0.79%
• 1Y: 2.63%
• 3Y*: 4.32%
• 5Y*: -1.10%
• 10Y*: —

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

RMMZ vs. RFM - Expense Ratio Comparison

RFM

RiverNorth Flexible Municipal Income Fund

Return for Risk

RMMZ vs. RFM — Risk / Return Rank

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

RMMZ

RMMZ Risk / Return Rank: 13
RMMZ Sharpe Ratio Rank: 13
RMMZ Sortino Ratio Rank: 12
RMMZ Omega Ratio Rank: 11
RMMZ Calmar Ratio Rank: 15
RMMZ Martin Ratio Rank: 12

RFM

RFM Risk / Return Rank: 9
RFM Sharpe Ratio Rank: 9
RFM Sortino Ratio Rank: 8
RFM Omega Ratio Rank: 8
RFM Calmar Ratio Rank: 11
RFM Martin Ratio Rank: 10

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.

RMMZ vs. RFM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for RiverNorth Managed Duration Municipal Income Fund II Inc. (RMMZ) and RiverNorth Flexible Municipal Income Fund (RFM). 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.

	RMMZ	RFM	Difference
Sharpe ratio Return per unit of total volatility	0.38	0.25	+0.13
Sortino ratio Return per unit of downside risk	0.62	0.39	+0.23
Omega ratio Gain probability vs. loss probability	1.08	1.06	+0.02
Calmar ratio Return relative to maximum drawdown	0.46	0.26	+0.20
Martin ratio Return relative to average drawdown	1.06	0.69	+0.37
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RMMZ vs. RFM - Sharpe Ratio Comparison

The current RMMZ Sharpe Ratio is 0.38, which is higher than the RFM Sharpe Ratio of 0.25. The chart below compares the historical Sharpe Ratios of RMMZ and RFM, 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

	RMMZ	RFM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.38	0.25	+0.13
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	-0.09	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.10	0.16	-0.06

Correlation

The correlation between RMMZ and RFM is 0.42, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

RMMZ vs. RFM - Dividend Comparison

RMMZ's dividend yield for the trailing twelve months is around 7.65%, less than RFM's 7.91% yield.

	TTM	2025	2024	2023	2022	2021	2020
RMMZ RiverNorth Managed Duration Municipal Income Fund II Inc.	7.65%	7.86%	7.82%	7.45%	6.86%	0.00%	0.00%
RFM RiverNorth Flexible Municipal Income Fund	7.91%	8.07%	7.70%	7.64%	8.38%	10.49%	5.07%

Drawdowns

RMMZ vs. RFM - Drawdown Comparison

The maximum RMMZ drawdown since its inception was -27.15%, smaller than the maximum RFM drawdown of -35.49%. Use the drawdown chart below to compare losses from any high point for RMMZ and RFM.

Drawdown Indicators

	RMMZ	RFM	Difference
Max Drawdown Largest peak-to-trough decline	-27.15%	-35.49%	+8.34%
Max Drawdown (1Y) Largest decline over 1 year	-8.45%	-8.80%	+0.35%
Max Drawdown (5Y) Largest decline over 5 years	—	-35.49%	—
Current Drawdown Current decline from peak	-2.19%	-16.02%	+13.83%
Average Drawdown Average peak-to-trough decline	-10.03%	-14.77%	+4.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.68%	3.36%	+0.32%

Volatility

RMMZ vs. RFM - Volatility Comparison

RiverNorth Managed Duration Municipal Income Fund II Inc. (RMMZ) has a higher volatility of 4.93% compared to RiverNorth Flexible Municipal Income Fund (RFM) at 4.28%. This indicates that RMMZ's price experiences larger fluctuations and is considered to be riskier than RFM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RMMZ	RFM	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.93%	4.28%	+0.65%
Volatility (6M) Calculated over the trailing 6-month period	7.76%	6.89%	+0.87%
Volatility (1Y) Calculated over the trailing 1-year period	11.02%	10.58%	+0.44%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.68%	12.85%	+4.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.68%	12.75%	+4.93%