MUB vs. CGMU
Compare and contrast key facts about iShares National AMT-Free Muni Bond ETF (MUB) and Capital Group Municipal Income ETF (CGMU).
MUB and CGMU are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. MUB is a passively managed fund by iShares that tracks the performance of the S&P National AMT-Free Municipal Bond Index. It was launched on Sep 7, 2007. CGMU is an actively managed fund by Capital Group. It was launched on Oct 25, 2022.
Performance
MUB vs. CGMU - Performance Comparison
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MUB vs. CGMU - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | |
|---|---|---|---|---|---|
MUB iShares National AMT-Free Muni Bond ETF | 0.04% | 3.78% | 1.26% | 5.56% | 4.36% |
CGMU Capital Group Municipal Income ETF | 0.16% | 5.19% | 2.64% | 6.76% | 4.53% |
Returns By Period
In the year-to-date period, MUB achieves a 0.04% return, which is significantly lower than CGMU's 0.16% return.
MUB
- 1D
- 0.42%
- 1M
- -1.55%
- YTD
- 0.04%
- 6M
- 1.52%
- 1Y
- 4.03%
- 3Y*
- 2.67%
- 5Y*
- 0.88%
- 10Y*
- 2.00%
CGMU
- 1D
- 0.18%
- 1M
- -1.92%
- YTD
- 0.16%
- 6M
- 1.65%
- 1Y
- 4.63%
- 3Y*
- 4.00%
- 5Y*
- —
- 10Y*
- —
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MUB vs. CGMU - Expense Ratio Comparison
MUB has a 0.07% expense ratio, which is lower than CGMU's 0.27% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Return for Risk
MUB vs. CGMU — Risk / Return Rank
MUB
CGMU
MUB vs. CGMU - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares National AMT-Free Muni Bond ETF (MUB) and Capital Group Municipal Income ETF (CGMU). 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.
| MUB | CGMU | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.98 | 1.43 | -0.45 |
Sortino ratioReturn per unit of downside risk | 1.27 | 1.83 | -0.56 |
Omega ratioGain probability vs. loss probability | 1.21 | 1.32 | -0.11 |
Calmar ratioReturn relative to maximum drawdown | 1.33 | 1.72 | -0.39 |
Martin ratioReturn relative to average drawdown | 4.22 | 5.71 | -1.49 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| MUB | CGMU | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.98 | 1.43 | -0.45 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.22 | — | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.41 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.58 | 1.61 | -1.04 |
Correlation
The correlation between MUB and CGMU is 0.84, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
MUB vs. CGMU - Dividend Comparison
MUB's dividend yield for the trailing twelve months is around 3.19%, less than CGMU's 3.37% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MUB iShares National AMT-Free Muni Bond ETF | 3.19% | 3.14% | 3.01% | 2.65% | 2.11% | 1.81% | 2.11% | 2.42% | 2.46% | 2.26% | 2.21% | 2.51% |
CGMU Capital Group Municipal Income ETF | 3.37% | 3.32% | 3.21% | 3.08% | 0.49% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Drawdowns
MUB vs. CGMU - Drawdown Comparison
The maximum MUB drawdown since its inception was -13.68%, which is greater than CGMU's maximum drawdown of -4.11%. Use the drawdown chart below to compare losses from any high point for MUB and CGMU.
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Drawdown Indicators
| MUB | CGMU | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -13.68% | -4.11% | -9.57% |
Max Drawdown (1Y)Largest decline over 1 year | -3.30% | -2.86% | -0.44% |
Max Drawdown (5Y)Largest decline over 5 years | -11.88% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -13.68% | — | — |
Current DrawdownCurrent decline from peak | -1.87% | -2.09% | +0.22% |
Average DrawdownAverage peak-to-trough decline | -2.24% | -0.82% | -1.42% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.04% | 0.86% | +0.18% |
Volatility
MUB vs. CGMU - Volatility Comparison
iShares National AMT-Free Muni Bond ETF (MUB) has a higher volatility of 1.56% compared to Capital Group Municipal Income ETF (CGMU) at 1.08%. This indicates that MUB's price experiences larger fluctuations and is considered to be riskier than CGMU based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MUB | CGMU | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.56% | 1.08% | +0.48% |
Volatility (6M)Calculated over the trailing 6-month period | 2.07% | 1.65% | +0.42% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.15% | 3.27% | +0.88% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.04% | 3.52% | +0.52% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.91% | 3.52% | +1.39% |