TFI vs. AMUN
TFI (SPDR Nuveen Bloomberg Barclays Municipal Bond ETF) and AMUN (abrdn Ultra Short Municipal Income Active ETF) are both Municipal Bonds funds. TFI is passively managed, while AMUN is actively managed. At a 0.22 correlation, their price movements are largely independent. TFI charges 0.23%/yr vs 0.25%/yr for AMUN.
Performance
TFI vs. AMUN - Performance Comparison
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Returns By Period
In the year-to-date period, TFI achieves a 1.19% return, which is significantly higher than AMUN's 1.11% return.
TFI
- 1D
- -0.02%
- 1M
- 0.63%
- YTD
- 1.19%
- 6M
- 1.64%
- 1Y
- 6.67%
- 3Y*
- 2.99%
- 5Y*
- -0.07%
- 10Y*
- 1.51%
AMUN
- 1D
- -0.02%
- 1M
- 0.32%
- YTD
- 1.11%
- 6M
- 1.36%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
TFI vs. AMUN - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
TFI SPDR Nuveen Bloomberg Barclays Municipal Bond ETF | 1.19% | 0.44% |
AMUN abrdn Ultra Short Municipal Income Active ETF | 1.11% | 0.14% |
Correlation
The correlation between TFI and AMUN is 0.22, 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 Oct 21, 2025 | 0.22 |
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Return for Risk
TFI vs. AMUN — Risk / Return Rank
TFI
AMUN
TFI vs. AMUN - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for SPDR Nuveen Bloomberg Barclays Municipal Bond ETF (TFI) and abrdn Ultra Short Municipal Income Active ETF (AMUN). 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.
| TFI | AMUN | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | 1.50 | — | — |
| Calmar ratioReturn relative to maximum drawdown | 2.40 | — | — |
| Martin ratioReturn relative to average drawdown | 7.91 | — | — |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| TFI | AMUN | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.38 | — | — |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.02 | — | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.30 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.51 | 2.05 | -1.54 |
Drawdowns
TFI vs. AMUN - Drawdown Comparison
The maximum TFI drawdown since its inception was -15.49%, which is greater than AMUN's maximum drawdown of -0.61%. Use the drawdown chart below to compare losses from any high point for TFI and AMUN.
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Drawdown Indicators
| TFI | AMUN | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -15.49% | -0.61% | -14.88% |
Max Drawdown (1Y)Largest decline over 1 year | -2.79% | — | — |
Max Drawdown (3Y)Largest decline over 3 years | -6.81% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -15.41% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -15.49% | — | — |
Current DrawdownCurrent decline from peak | -1.21% | -0.02% | -1.19% |
Average DrawdownAverage peak-to-trough decline | -2.97% | -0.09% | -2.88% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.85% | — | — |
Volatility
TFI vs. AMUN - Volatility Comparison
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Volatility by Period
| TFI | AMUN | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.90% | — | — |
Volatility (6M)Calculated over the trailing 6-month period | 2.10% | — | — |
Volatility (1Y)Calculated over the trailing 1-year period | 2.82% | 1.01% | +1.81% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.31% | 1.01% | +3.30% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.00% | 1.01% | +3.99% |
TFI vs. AMUN - Expense Ratio Comparison
TFI has a 0.23% expense ratio, which is lower than AMUN's 0.25% 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%.
Dividends
TFI vs. AMUN - Dividend Comparison
TFI's dividend yield for the trailing twelve months is around 3.48%, more than AMUN's 1.89% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AMUN abrdn Ultra Short Municipal Income Active ETF | 1.89% | 0.66% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
TFI SPDR Nuveen Bloomberg Barclays Municipal Bond ETF | 3.48% | 3.32% | 3.01% | 2.41% | 1.87% | 1.71% | 1.91% | 2.14% | 2.26% | 2.16% | 2.39% | 2.40% |
Frequently Asked Questions
TFI and AMUN have a correlation of 0.22, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, TFI is cheaper at 0.23% per year. The better choice depends on whether you care most about return, fees, risk, or income.
TFI is cheaper with a 0.23% expense ratio, compared with 0.25% for AMUN.
TFI has the higher dividend yield at 3.48%, compared with 1.89% for AMUN.
They also come from different issuers: State Street and abrdn. Their fees differ too: 0.23% for TFI and 0.25% for AMUN.
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