PMIO vs. FMUN

Last updated Jun 23, 2026

PMIO (PGIM Municipal Income Opportunities ETF) and FMUN (Fidelity Systematic Municipal Bond Index ETF) are both Municipal Bonds funds. Both are actively managed. Over the past year, PMIO returned 6.62% vs 7.10% for FMUN. A 0.67 correlation means they provide meaningful diversification when combined. PMIO charges 0.25%/yr vs 0.05%/yr for FMUN.

Performance

PMIO vs. FMUN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PGIM Municipal Income Opportunities ETF (PMIO) and Fidelity Systematic Municipal Bond Index ETF (FMUN). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PMIO achieves a 1.96% return, which is significantly higher than FMUN's 1.44% return.

PMIO

• 1D: -0.03%
• 1M: 1.29%
• YTD: 1.96%
• 6M: 2.15%
• 1Y: 6.62%
• 3Y*: —
• 5Y*: —
• 10Y*: —

FMUN

• 1D: -0.01%
• 1M: 1.29%
• YTD: 1.44%
• 6M: 1.49%
• 1Y: 7.10%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

PMIO vs. FMUN - Yearly Performance Comparison

	2026 (YTD)	2025
PMIO PGIM Municipal Income Opportunities ETF	1.96%	3.85%
FMUN Fidelity Systematic Municipal Bond Index ETF	1.44%	3.28%

Correlation

The correlation between PMIO and FMUN is 0.68, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.68
Correlation (All Time) Calculated using the full available price history since Apr 7, 2025	0.67

The correlation between PMIO and FMUN has been stable across timeframes, ranging from 0.67 to 0.68 - a consistent structural relationship.

Return for Risk

PMIO vs. FMUN — Risk / Return Rank

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

PMIO

PMIO Risk / Return Rank: 80
PMIO Sharpe Ratio Rank: 91
PMIO Sortino Ratio Rank: 94
PMIO Omega Ratio Rank: 95
PMIO Calmar Ratio Rank: 62
PMIO Martin Ratio Rank: 58

FMUN

FMUN Risk / Return Rank: 66
FMUN Sharpe Ratio Rank: 75
FMUN Sortino Ratio Rank: 78
FMUN Omega Ratio Rank: 85
FMUN Calmar Ratio Rank: 46
FMUN Martin Ratio Rank: 45

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.

PMIO vs. FMUN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PGIM Municipal Income Opportunities ETF (PMIO) and Fidelity Systematic Municipal Bond Index ETF (FMUN). 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.

	PMIO	FMUN	Difference
Sharpe ratio: Return per unit of total volatility	3.01	2.30	+0.71
Sortino ratio: Return per unit of downside risk	4.52	3.32	+1.19
Omega ratio: Gain probability vs. loss probability	1.69	1.50	+0.19
Calmar ratio: Return relative to maximum drawdown	2.97	2.22	+0.75
Martin ratio: Return relative to average drawdown	9.87	7.21	+2.66

PMIO vs. FMUN - Sharpe Ratio Comparison

The current PMIO Sharpe Ratio is 3.01, which is higher than the FMUN Sharpe Ratio of 2.30. The chart below compares the historical Sharpe Ratios of PMIO and FMUN, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

PMIO vs. FMUN - Drawdown Comparison

The maximum PMIO drawdown since its inception was -3.39%, smaller than the maximum FMUN drawdown of -3.83%. Use the drawdown chart below to compare losses from any high point for PMIO and FMUN.

Drawdown Indicators

	PMIO	FMUN	Difference
Max Drawdown Largest peak-to-trough decline	-3.39%	-3.83%	+0.44%
Max Drawdown (1Y) Largest decline over 1 year	-2.24%	-3.21%	+0.97%
Current Drawdown Current decline from peak	-0.06%	-0.91%	+0.85%
Average Drawdown Average peak-to-trough decline	-0.65%	-1.13%	+0.48%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.67%	0.99%	-0.32%

Volatility

PMIO vs. FMUN - Volatility Comparison

The current volatility for PGIM Municipal Income Opportunities ETF (PMIO) is 0.60%, while Fidelity Systematic Municipal Bond Index ETF (FMUN) has a volatility of 0.99%. This indicates that PMIO experiences smaller price fluctuations and is considered to be less risky than FMUN based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PMIO	FMUN	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.60%	0.99%	-0.39%
Volatility (6M) Calculated over the trailing 6-month period	1.62%	2.38%	-0.76%
Volatility (1Y) Calculated over the trailing 1-year period	2.21%	3.11%	-0.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.06%	4.13%	-1.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.06%	4.13%	-1.07%

PMIO vs. FMUN - Expense Ratio Comparison

PMIO has a 0.25% expense ratio, which is higher than FMUN's 0.05% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

PMIO vs. FMUN - Dividend Comparison

PMIO's dividend yield for the trailing twelve months is around 3.91%, more than FMUN's 3.30% yield.

Position	TTM	2025	2024
FMUN Fidelity Systematic Municipal Bond Index ETF	3.30%	2.41%	0.00%
PMIO PGIM Municipal Income Opportunities ETF	3.91%	4.00%	2.11%

Frequently Asked Questions

Can I hold both PMIO and FMUN in my portfolio?

PMIO and FMUN have a correlation of 0.68, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PMIO or FMUN?

FMUN has higher volatility (0.99%) compared to PMIO (0.60%). In terms of maximum drawdown, PMIO dropped -3.39% vs FMUN's -3.83%.

Which ETF is better, PMIO or FMUN?

On 1-year performance, FMUN leads with 7.10% vs 6.62% for PMIO. On fees, FMUN is cheaper at 0.05% per year. On volatility, PMIO has been the lower-risk option at 0.60%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, PMIO or FMUN?

Over the 1-year period, FMUN has performed better with a 7.10% return vs 6.62%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, PMIO or FMUN?

FMUN is cheaper with a 0.05% expense ratio, compared with 0.25% for PMIO.

Which ETF pays a higher dividend yield, PMIO or FMUN?

PMIO has the higher dividend yield at 3.91%, compared with 3.30% for FMUN.

What is the main difference between PMIO and FMUN?

They also come from different issuers: PGIM and Fidelity. Their fees differ too: 0.25% for PMIO and 0.05% for FMUN.

Which has better risk-adjusted returns?

PMIO currently has the higher Sharpe Ratio (3.01 vs 2.30), 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.