WTAIX vs. ATOIX
Compare and contrast key facts about Wilmington Municipal Bond Fund (WTAIX) and abrdn Ultra Short Municipal Income Fund (ATOIX).
WTAIX is managed by Wilmington Funds. It was launched on Nov 1, 1993. ATOIX is managed by Aberdeen. It was launched on Dec 4, 2002.
Performance
WTAIX vs. ATOIX - Performance Comparison
Loading graphics...
WTAIX vs. ATOIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
WTAIX Wilmington Municipal Bond Fund | -0.77% | 5.05% | 0.73% | 5.14% | -8.01% | 0.55% | 2.60% | 7.12% | 0.86% | 4.30% |
ATOIX abrdn Ultra Short Municipal Income Fund | 0.35% | 3.33% | 3.14% | 3.27% | 0.87% | -0.04% | 0.88% | 1.40% | 1.54% | 2.24% |
Returns By Period
In the year-to-date period, WTAIX achieves a -0.77% return, which is significantly lower than ATOIX's 0.35% return. Over the past 10 years, WTAIX has underperformed ATOIX with an annualized return of 1.47%, while ATOIX has yielded a comparatively higher 1.73% annualized return.
WTAIX
- 1D
- 0.08%
- 1M
- -2.68%
- YTD
- -0.77%
- 6M
- 0.54%
- 1Y
- 3.93%
- 3Y*
- 2.43%
- 5Y*
- 0.57%
- 10Y*
- 1.47%
ATOIX
- 1D
- 0.00%
- 1M
- -0.10%
- YTD
- 0.35%
- 6M
- 1.37%
- 1Y
- 2.95%
- 3Y*
- 3.07%
- 5Y*
- 2.17%
- 10Y*
- 1.73%
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
WTAIX vs. ATOIX - Expense Ratio Comparison
WTAIX has a 0.49% expense ratio, which is higher than ATOIX's 0.44% expense ratio.
Return for Risk
WTAIX vs. ATOIX — Risk / Return Rank
WTAIX
ATOIX
WTAIX vs. ATOIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Wilmington Municipal Bond Fund (WTAIX) and abrdn Ultra Short Municipal Income Fund (ATOIX). 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.
| WTAIX | ATOIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.23 | 3.51 | -2.28 |
Sortino ratioReturn per unit of downside risk | 1.63 | 18.38 | -16.75 |
Omega ratioGain probability vs. loss probability | 1.35 | 11.59 | -10.24 |
Calmar ratioReturn relative to maximum drawdown | 1.26 | 32.23 | -30.98 |
Martin ratioReturn relative to average drawdown | 4.95 | 93.42 | -88.47 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading graphics...
Sharpe Ratios by Period
| WTAIX | ATOIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.23 | 3.51 | -2.28 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.19 | 2.69 | -2.50 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.43 | 2.24 | -1.81 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.13 | 2.45 | -1.32 |
Correlation
The correlation between WTAIX and ATOIX is 0.25, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
WTAIX vs. ATOIX - Dividend Comparison
WTAIX's dividend yield for the trailing twelve months is around 2.47%, less than ATOIX's 2.90% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
WTAIX Wilmington Municipal Bond Fund | 2.47% | 2.85% | 2.11% | 2.03% | 1.45% | 1.68% | 1.72% | 3.84% | 2.15% | 2.92% | 2.63% | 3.81% |
ATOIX abrdn Ultra Short Municipal Income Fund | 2.90% | 3.27% | 3.09% | 3.02% | 1.07% | 0.06% | 0.88% | 1.39% | 1.42% | 2.20% | 0.61% | 0.52% |
Drawdowns
WTAIX vs. ATOIX - Drawdown Comparison
The maximum WTAIX drawdown since its inception was -12.35%, which is greater than ATOIX's maximum drawdown of -1.46%. Use the drawdown chart below to compare losses from any high point for WTAIX and ATOIX.
Loading graphics...
Drawdown Indicators
| WTAIX | ATOIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -12.35% | -1.46% | -10.89% |
Max Drawdown (1Y)Largest decline over 1 year | -3.66% | -0.10% | -3.56% |
Max Drawdown (5Y)Largest decline over 5 years | -12.35% | -0.37% | -11.98% |
Max Drawdown (10Y)Largest decline over 10 years | -12.35% | -0.43% | -11.92% |
Current DrawdownCurrent decline from peak | -2.68% | -0.10% | -2.58% |
Average DrawdownAverage peak-to-trough decline | -1.64% | -0.06% | -1.58% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.93% | 0.03% | +0.90% |
Volatility
WTAIX vs. ATOIX - Volatility Comparison
Wilmington Municipal Bond Fund (WTAIX) has a higher volatility of 0.89% compared to abrdn Ultra Short Municipal Income Fund (ATOIX) at 0.10%. This indicates that WTAIX's price experiences larger fluctuations and is considered to be riskier than ATOIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading graphics...
Volatility by Period
| WTAIX | ATOIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.89% | 0.10% | +0.79% |
Volatility (6M)Calculated over the trailing 6-month period | 1.39% | 0.65% | +0.74% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.63% | 0.92% | +2.71% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 3.05% | 0.81% | +2.24% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 3.43% | 0.78% | +2.65% |