SCMB vs. MUB
Compare and contrast key facts about Schwab Municipal Bond ETF (SCMB) and iShares National AMT-Free Muni Bond ETF (MUB).
SCMB and MUB are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. SCMB is a passively managed fund by Charles Schwab that tracks the performance of the ICE AMT-Free Core U.S. National Municipal Index - Benchmark TR Gross. It was launched on Oct 11, 2022. 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. Both SCMB and MUB are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.
Performance
SCMB vs. MUB - Performance Comparison
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SCMB vs. MUB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | |
|---|---|---|---|---|---|
SCMB Schwab Municipal Bond ETF | -0.51% | 3.78% | 0.91% | 5.86% | 3.05% |
MUB iShares National AMT-Free Muni Bond ETF | -0.37% | 3.78% | 1.26% | 5.56% | 2.51% |
Returns By Period
In the year-to-date period, SCMB achieves a -0.51% return, which is significantly lower than MUB's -0.37% return.
SCMB
- 1D
- 0.24%
- 1M
- -2.42%
- YTD
- -0.51%
- 6M
- 1.25%
- 1Y
- 3.88%
- 3Y*
- 2.44%
- 5Y*
- —
- 10Y*
- —
MUB
- 1D
- 0.19%
- 1M
- -2.28%
- YTD
- -0.37%
- 6M
- 1.28%
- 1Y
- 3.94%
- 3Y*
- 2.53%
- 5Y*
- 0.79%
- 10Y*
- 1.96%
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SCMB vs. MUB - Expense Ratio Comparison
SCMB has a 0.03% expense ratio, which is lower than MUB's 0.07% 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
SCMB vs. MUB — Risk / Return Rank
SCMB
MUB
SCMB vs. MUB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Schwab Municipal Bond ETF (SCMB) and iShares National AMT-Free Muni Bond ETF (MUB). 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.
| SCMB | MUB | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.94 | 0.96 | -0.02 |
Sortino ratioReturn per unit of downside risk | 1.22 | 1.25 | -0.03 |
Omega ratioGain probability vs. loss probability | 1.21 | 1.21 | 0.00 |
Calmar ratioReturn relative to maximum drawdown | 1.05 | 1.27 | -0.22 |
Martin ratioReturn relative to average drawdown | 2.98 | 4.07 | -1.10 |
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
| SCMB | MUB | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.94 | 0.96 | -0.02 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.20 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.40 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.90 | 0.57 | +0.33 |
Correlation
The correlation between SCMB and MUB is 0.86, 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
SCMB vs. MUB - Dividend Comparison
SCMB's dividend yield for the trailing twelve months is around 3.38%, more than MUB's 3.19% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SCMB Schwab Municipal Bond ETF | 3.38% | 3.36% | 3.34% | 3.10% | 0.59% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
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% |
Drawdowns
SCMB vs. MUB - Drawdown Comparison
The maximum SCMB drawdown since its inception was -6.13%, smaller than the maximum MUB drawdown of -13.68%. Use the drawdown chart below to compare losses from any high point for SCMB and MUB.
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Drawdown Indicators
| SCMB | MUB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -6.13% | -13.68% | +7.55% |
Max Drawdown (1Y)Largest decline over 1 year | -3.79% | -3.30% | -0.49% |
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 | -2.42% | -2.28% | -0.14% |
Average DrawdownAverage peak-to-trough decline | -1.32% | -2.24% | +0.92% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.34% | 1.03% | +0.31% |
Volatility
SCMB vs. MUB - Volatility Comparison
Schwab Municipal Bond ETF (SCMB) and iShares National AMT-Free Muni Bond ETF (MUB) have volatilities of 1.47% and 1.53%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SCMB | MUB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.47% | 1.53% | -0.06% |
Volatility (6M)Calculated over the trailing 6-month period | 2.02% | 2.03% | -0.01% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.15% | 4.14% | +0.01% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.22% | 4.04% | +0.18% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.22% | 4.91% | -0.69% |