IBMP vs. FMUB

Last updated Jun 4, 2026

IBMP (iShares iBonds Dec 2027 Term Muni Bond ETF) and FMUB (Fidelity Municipal Bond Opportunities ETF) are both Municipal Bonds funds. IBMP is passively managed, while FMUB is actively managed. Over the past year, IBMP returned 3.04% vs 7.69% for FMUB. At a 0.31 correlation, their price movements are largely independent. IBMP charges 0.18%/yr vs 0.30%/yr for FMUB.

Performance

IBMP vs. FMUB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares iBonds Dec 2027 Term Muni Bond ETF (IBMP) and Fidelity Municipal Bond Opportunities ETF (FMUB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IBMP achieves a 0.89% return, which is significantly lower than FMUB's 1.89% return.

IBMP

• 1D: 0.00%
• 1M: 0.21%
• YTD: 0.89%
• 6M: 1.26%
• 1Y: 3.04%
• 3Y*: 2.97%
• 5Y*: 0.59%
• 10Y*: —

FMUB

• 1D: -0.02%
• 1M: 0.78%
• YTD: 1.89%
• 6M: 2.13%
• 1Y: 7.69%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

IBMP vs. FMUB - Yearly Performance Comparison

	2026 (YTD)	2025
IBMP iShares iBonds Dec 2027 Term Muni Bond ETF	0.89%	3.10%
FMUB Fidelity Municipal Bond Opportunities ETF	1.89%	6.63%

Correlation

The correlation between IBMP and FMUB is 0.29, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.29
Correlation (All Time) Calculated using the full available price history since Apr 8, 2025	0.31

Return for Risk

IBMP vs. FMUB — Risk / Return Rank

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

IBMP

IBMP Risk / Return Rank: 86
IBMP Sharpe Ratio Rank: 86
IBMP Sortino Ratio Rank: 91
IBMP Omega Ratio Rank: 91
IBMP Calmar Ratio Rank: 88
IBMP Martin Ratio Rank: 75

FMUB

FMUB Risk / Return Rank: 80
FMUB Sharpe Ratio Rank: 87
FMUB Sortino Ratio Rank: 90
FMUB Omega Ratio Rank: 92
FMUB Calmar Ratio Rank: 62
FMUB Martin Ratio Rank: 67

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.

IBMP vs. FMUB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2027 Term Muni Bond ETF (IBMP) and Fidelity Municipal Bond Opportunities ETF (FMUB). 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.

	IBMP	FMUB	Difference
Sharpe ratio: Return per unit of total volatility	2.83	2.90	-0.07
Sortino ratio: Return per unit of downside risk	4.38	4.26	+0.12
Omega ratio: Gain probability vs. loss probability	1.60	1.63	-0.02
Calmar ratio: Return relative to maximum drawdown	5.14	3.10	+2.04
Martin ratio: Return relative to average drawdown	14.24	12.33	+1.91
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IBMP vs. FMUB - Sharpe Ratio Comparison

The current IBMP Sharpe Ratio is 2.83, which is comparable to the FMUB Sharpe Ratio of 2.90. The chart below compares the historical Sharpe Ratios of IBMP and FMUB, 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

	IBMP	FMUB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.83	2.90	-0.07
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.23	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.38	2.30	-1.92

Drawdowns

IBMP vs. FMUB - Drawdown Comparison

The maximum IBMP drawdown since its inception was -15.24%, which is greater than FMUB's maximum drawdown of -2.49%. Use the drawdown chart below to compare losses from any high point for IBMP and FMUB.

Drawdown Indicators

	IBMP	FMUB	Difference
Max Drawdown Largest peak-to-trough decline	-15.24%	-2.49%	-12.75%
Max Drawdown (1Y) Largest decline over 1 year	-0.59%	-2.49%	+1.90%
Max Drawdown (3Y) Largest decline over 3 years	-2.63%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-10.00%	—	—
Current Drawdown Current decline from peak	-0.01%	-0.10%	+0.09%
Average Drawdown Average peak-to-trough decline	-2.72%	-0.38%	-2.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.21%	0.63%	-0.42%

Volatility

IBMP vs. FMUB - Volatility Comparison

The current volatility for iShares iBonds Dec 2027 Term Muni Bond ETF (IBMP) is 0.27%, while Fidelity Municipal Bond Opportunities ETF (FMUB) has a volatility of 0.87%. This indicates that IBMP experiences smaller price fluctuations and is considered to be less risky than FMUB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IBMP	FMUB	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.27%	0.87%	-0.60%
Volatility (6M) Calculated over the trailing 6-month period	0.79%	1.99%	-1.20%
Volatility (1Y) Calculated over the trailing 1-year period	1.08%	2.67%	-1.59%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.56%	3.25%	-0.69%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.01%	3.25%	+1.76%

IBMP vs. FMUB - Expense Ratio Comparison

IBMP has a 0.18% expense ratio, which is lower than FMUB's 0.30% expense ratio.

Dividends

IBMP vs. FMUB - Dividend Comparison

IBMP's dividend yield for the trailing twelve months is around 2.50%, less than FMUB's 3.42% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019
FMUB Fidelity Municipal Bond Opportunities ETF	3.42%	2.63%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
IBMP iShares iBonds Dec 2027 Term Muni Bond ETF	2.50%	2.47%	2.35%	2.05%	1.26%	0.86%	1.16%	1.06%

Frequently Asked Questions

Can I hold both IBMP and FMUB in my portfolio?

IBMP and FMUB have a correlation of 0.29, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IBMP or FMUB?

FMUB has higher volatility (0.87%) compared to IBMP (0.27%). In terms of maximum drawdown, IBMP dropped -15.24% vs FMUB's -2.49%.

Which ETF is better, IBMP or FMUB?

On 1-year performance, FMUB leads with 7.69% vs 3.04% for IBMP. On fees, IBMP is cheaper at 0.18% per year. On volatility, IBMP has been the lower-risk option at 0.27%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IBMP or FMUB?

Over the 1-year period, FMUB has performed better with a 7.69% return vs 3.04%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IBMP or FMUB?

IBMP is cheaper with a 0.18% expense ratio, compared with 0.30% for FMUB.

Which ETF pays a higher dividend yield, IBMP or FMUB?

FMUB has the higher dividend yield at 3.42%, compared with 2.50% for IBMP.

What is the main difference between IBMP and FMUB?

They also come from different issuers: iShares and Fidelity. Their fees differ too: 0.18% for IBMP and 0.30% for FMUB.

Which has better risk-adjusted returns?

FMUB currently has the higher Sharpe Ratio (2.90 vs 2.83), 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.