BKMS vs. MUB
BKMS (BNY Mellon Municipal Short Duration ETF) and MUB (iShares National AMT-Free Muni Bond ETF) are both Municipal Bonds funds. BKMS is actively managed, while MUB is passively managed. At a 0.49 correlation, their price movements are largely independent. BKMS charges 0.35%/yr vs 0.07%/yr for MUB.
Performance
BKMS vs. MUB - Performance Comparison
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Returns By Period
BKMS
- 1D
- 0.07%
- 1M
- 0.64%
- YTD
- —
- 6M
- —
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
MUB
- 1D
- 0.19%
- 1M
- 1.48%
- YTD
- 1.67%
- 6M
- 1.81%
- 1Y
- 6.46%
- 3Y*
- 3.25%
- 5Y*
- 0.97%
- 10Y*
- 1.92%
BKMS vs. MUB - Yearly Performance Comparison
| 2026 (YTD) | |
|---|---|
BKMS BNY Mellon Municipal Short Duration ETF | 0.79% |
MUB iShares National AMT-Free Muni Bond ETF | 1.15% |
Correlation
The correlation between BKMS and MUB is 0.49, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since Jan 12, 2026 | 0.49 |
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Return for Risk
BKMS vs. MUB — Risk / Return Rank
BKMS
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
MUB
BKMS vs. MUB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for BNY Mellon Municipal Short Duration ETF (BKMS) 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.
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.
| BKMS | MUB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | — | 1.47 | — |
| Calmar ratioReturn relative to maximum drawdown | — | 2.33 | — |
| Martin ratioReturn relative to average drawdown | — | 8.10 | — |
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Drawdowns
BKMS vs. MUB - Drawdown Comparison
The maximum BKMS drawdown since its inception was -0.87%, smaller than the maximum MUB drawdown of -13.68%. Use the drawdown chart below to compare losses from any high point for BKMS and MUB.
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Drawdown Indicators
| BKMS | MUB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -0.87% | -13.68% | +12.81% |
Max Drawdown (1Y)Largest decline over 1 year | — | -2.79% | — |
Max Drawdown (3Y)Largest decline over 3 years | — | -5.34% | — |
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 | 0.00% | -0.28% | +0.28% |
Average DrawdownAverage peak-to-trough decline | -0.26% | -2.23% | +1.97% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 0.80% | — |
Volatility
BKMS vs. MUB - Volatility Comparison
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Volatility by Period
| BKMS | MUB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | — | 0.78% | — |
Volatility (6M)Calculated over the trailing 6-month period | — | 2.28% | — |
Volatility (1Y)Calculated over the trailing 1-year period | 1.22% | 2.89% | -1.67% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 1.22% | 4.07% | -2.85% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.22% | 4.92% | -3.70% |
BKMS vs. MUB - Expense Ratio Comparison
BKMS has a 0.35% expense ratio, which is higher than MUB's 0.07% expense ratio.
Dividends
BKMS vs. MUB - Dividend Comparison
BKMS's dividend yield for the trailing twelve months is around 1.11%, less than MUB's 3.16% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BKMS BNY Mellon Municipal Short Duration ETF | 1.11% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
MUB iShares National AMT-Free Muni Bond ETF | 3.16% | 3.14% | 3.01% | 2.65% | 2.11% | 1.81% | 2.11% | 2.42% | 2.46% | 2.26% | 2.21% | 2.51% |
Frequently Asked Questions
BKMS and MUB have a correlation of 0.49, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, MUB is cheaper at 0.07% per year. The better choice depends on whether you care most about return, fees, risk, or income.
MUB is cheaper with a 0.07% expense ratio, compared with 0.35% for BKMS.
MUB has the higher dividend yield at 3.16%, compared with 1.11% for BKMS.
They also come from different issuers: BNY Mellon and iShares. Their fees differ too: 0.35% for BKMS and 0.07% for MUB.
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