RFMZ vs. USMSX

Last updated Apr 1, 2026

Compare and contrast key facts about RiverNorth Flexible Municipal Income Fund II Inc. (RFMZ) and JPMorgan Ultra-Short Municipal Fund (USMSX).

RFMZ is managed by RiverNorth. USMSX is managed by JPMorgan. It was launched on May 31, 2016.

Performance

RFMZ vs. USMSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in RiverNorth Flexible Municipal Income Fund II Inc. (RFMZ) and JPMorgan Ultra-Short Municipal Fund (USMSX). The values are adjusted to include any dividend payments, if applicable.

RFMZ vs. USMSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
RFMZ RiverNorth Flexible Municipal Income Fund II Inc.	1.79%	2.22%	10.11%	4.54%	-26.41%	3.62%
USMSX JPMorgan Ultra-Short Municipal Fund	0.19%	2.87%	3.09%	3.21%	-0.90%	-0.06%

Returns By Period

In the year-to-date period, RFMZ achieves a 1.79% return, which is significantly higher than USMSX's 0.19% return.

RFMZ

• 1D: 2.10%
• 1M: -3.42%
• YTD: 1.79%
• 6M: 0.72%
• 1Y: 1.97%
• 3Y*: 5.62%
• 5Y*: -1.89%
• 10Y*: —

USMSX

• 1D: 0.00%
• 1M: -0.30%
• YTD: 0.19%
• 6M: 0.82%
• 1Y: 2.49%
• 3Y*: 2.80%
• 5Y*: 1.67%
• 10Y*: —

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

RFMZ vs. USMSX - Expense Ratio Comparison

RFMZ has a 3.27% expense ratio, which is higher than USMSX's 0.45% expense ratio.

RFMZ

RiverNorth Flexible Municipal Income Fund II Inc.

USMSX

JPMorgan Ultra-Short Municipal Fund

Return for Risk

RFMZ vs. USMSX — Risk / Return Rank

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

RFMZ

RFMZ Risk / Return Rank: 8
RFMZ Sharpe Ratio Rank: 8
RFMZ Sortino Ratio Rank: 7
RFMZ Omega Ratio Rank: 7
RFMZ Calmar Ratio Rank: 9
RFMZ Martin Ratio Rank: 9

USMSX

USMSX Risk / Return Rank: 99
USMSX Sharpe Ratio Rank: 99
USMSX Sortino Ratio Rank: 99
USMSX Omega Ratio Rank: 99
USMSX Calmar Ratio Rank: 99
USMSX 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.

RFMZ vs. USMSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for RiverNorth Flexible Municipal Income Fund II Inc. (RFMZ) and JPMorgan Ultra-Short Municipal Fund (USMSX). 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.

	RFMZ	USMSX	Difference
Sharpe ratio Return per unit of total volatility	0.19	3.75	-3.56
Sortino ratio Return per unit of downside risk	0.32	6.76	-6.44
Omega ratio Gain probability vs. loss probability	1.05	3.27	-2.23
Calmar ratio Return relative to maximum drawdown	0.18	6.48	-6.30
Martin ratio Return relative to average drawdown	0.51	34.69	-34.18
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RFMZ vs. USMSX - Sharpe Ratio Comparison

The current RFMZ Sharpe Ratio is 0.19, which is lower than the USMSX Sharpe Ratio of 3.75. The chart below compares the historical Sharpe Ratios of RFMZ and USMSX, 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

	RFMZ	USMSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.19	3.75	-3.56
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.14	2.39	-2.53
Sharpe Ratio (All Time) Calculated using the full available price history	-0.13	1.86	-1.99

Correlation

The correlation between RFMZ and USMSX is 0.17, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

RFMZ vs. USMSX - Dividend Comparison

RFMZ's dividend yield for the trailing twelve months is around 8.01%, more than USMSX's 2.36% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
RFMZ RiverNorth Flexible Municipal Income Fund II Inc.	8.01%	8.13%	7.76%	7.92%	8.53%	4.53%	0.00%	0.00%	0.00%	0.00%
USMSX JPMorgan Ultra-Short Municipal Fund	2.36%	2.42%	2.84%	2.35%	0.70%	0.05%	0.57%	1.28%	1.01%	0.59%

Drawdowns

RFMZ vs. USMSX - Drawdown Comparison

The maximum RFMZ drawdown since its inception was -39.28%, which is greater than USMSX's maximum drawdown of -2.09%. Use the drawdown chart below to compare losses from any high point for RFMZ and USMSX.

Drawdown Indicators

	RFMZ	USMSX	Difference
Max Drawdown Largest peak-to-trough decline	-39.28%	-2.09%	-37.19%
Max Drawdown (1Y) Largest decline over 1 year	-9.48%	-0.40%	-9.08%
Max Drawdown (5Y) Largest decline over 5 years	-39.28%	-2.03%	-37.25%
Current Drawdown Current decline from peak	-18.33%	-0.30%	-18.03%
Average Drawdown Average peak-to-trough decline	-20.44%	-0.22%	-20.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.40%	0.07%	+3.33%

Volatility

RFMZ vs. USMSX - Volatility Comparison

RiverNorth Flexible Municipal Income Fund II Inc. (RFMZ) has a higher volatility of 3.29% compared to JPMorgan Ultra-Short Municipal Fund (USMSX) at 0.22%. This indicates that RFMZ's price experiences larger fluctuations and is considered to be riskier than USMSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RFMZ	USMSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.29%	0.22%	+3.07%
Volatility (6M) Calculated over the trailing 6-month period	6.12%	0.40%	+5.72%
Volatility (1Y) Calculated over the trailing 1-year period	10.23%	0.69%	+9.54%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.63%	0.70%	+12.93%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.52%	0.74%	+12.78%