- ISIN
- US97181C4565
- CUSIP
- 97181C456
- Issuer
- Wilmington Funds
- Inception Date
- Nov 1, 1993
- Category
- Municipal Bonds
- Min. Investment
- $100,000
- Distribution Policy
- Distributing
- Asset Class
- Bond
Share Price Chart
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Performance
WTAIX Performance Chart
Wilmington Municipal Bond Fund (WTAIX) is up 0.9% since the beginning of the year. WTAIX is currently trading at $12 per share. Investors who bought $1,000 worth of WTAIX shares 5 years ago would now be looking at an investment worth $1,033.
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Returns By Period
Wilmington Municipal Bond Fund (WTAIX) has returned 0.88% so far this year and 5.35% over the past 12 months. Over the last ten years, WTAIX has returned 1.50% per year, falling short of the S&P 500 Index benchmark, which averaged 13.88% annually.
Wilmington Municipal Bond Fund
- 1D
- 0.08%
- 1M
- 1.21%
- YTD
- 0.88%
- 6M
- 1.19%
- 1Y
- 5.35%
- 3Y*
- 3.26%
- 5Y*
- 0.66%
- 10Y*
- 1.50%
Benchmark (S&P 500 Index)
- 1D
- -0.37%
- 1M
- -0.01%
- YTD
- 9.16%
- 6M
- 8.64%
- 1Y
- 25.22%
- 3Y*
- 19.78%
- 5Y*
- 11.99%
- 10Y*
- 13.88%
WTAIX Monthly Returns History
Based on dividend-adjusted daily data since Oct 29, 1993, WTAIX's average daily return is +0.01%, while the average monthly return is +0.29%. At this rate, an investment would double in approximately 19.9 years.
Historically, 66% of months were positive and 34% were negative. The best month was Nov 2023 with a return of +5.0%, while the worst month was Mar 2020 at -5.2%. The longest winning streak lasted 11 consecutive months, and the longest losing streak was 4 months.
On a daily basis, WTAIX closed higher 37% of trading days. The best single day was Mar 25, 2020 with a return of +3.1%, while the worst single day was Mar 19, 2020 at -3.0%.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 0.95% | 1.00% | -2.30% | 0.87% | 0.23% | 0.16% | 0.88% | ||||||
| 2025 | 0.76% | 0.94% | -1.39% | -0.35% | 0.31% | 0.80% | 0.15% | 0.89% | 1.53% | 0.87% | 0.22% | 0.23% | 5.05% |
| 2024 | -0.28% | 0.03% | -0.24% | -1.01% | -0.44% | 0.99% | 0.95% | 0.80% | 0.92% | -1.02% | 1.03% | -0.97% | 0.73% |
| 2023 | 2.84% | -2.01% | 1.95% | -0.24% | -0.95% | 0.69% | 0.26% | -1.07% | -2.46% | -1.02% | 5.03% | 2.26% | 5.14% |
| 2022 | -2.73% | -0.56% | -2.89% | -2.34% | 0.91% | -1.14% | 2.23% | -1.94% | -2.96% | -0.52% | 3.61% | 0.27% | -8.01% |
| 2021 | 0.45% | -1.63% | 0.45% | 0.83% | 0.22% | 0.13% | 0.74% | -0.23% | -0.83% | -0.24% | 0.59% | 0.11% | 0.55% |
Benchmark Metrics
Wilmington Municipal Bond Fund has an annualized alpha of 3.51%, beta of 0.00, and R2 of 0.00 versus S&P 500 Index. Calculated based on daily prices since October 29, 1993.
- This fund captured 11.09% of S&P 500 Index gains and tended to rise during its downturns (downside capture of -0.97%) - a profile typical of hedging or uncorrelated assets.
- Beta of 0.00 may look defensive, but with R2 of 0.00 this fund is largely uncorrelated with S&P 500 Index - low beta reflects independence, not downside protection. See the Volatility section for a true picture of this fund's risk.
- R2 of 0.00 means this fund moves largely independently of S&P 500 Index - capture ratios reflect limited market correlation rather than active downside protection. Consider using a more representative benchmark.
- Alpha
- 3.51%
- Beta
- 0.00
- R²
- 0.00
- Upside Capture
- 11.09%
- Downside Capture
- -0.97%
Expense Ratio
WTAIX has an expense ratio of 0.49%, placing it in the medium range.
Return for Risk
Risk / Return Rank
WTAIX ranks 65 for risk / return — better than 65% of mutual funds on our site. You're getting solid returns for the risk taken. A good sign, especially for investors who want growth without excessive volatility.
Return / Risk — by metrics
The table below present risk-adjusted performance metrics for Wilmington Municipal Bond Fund (WTAIX) and compare them to S&P 500 Index.
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.
| WTAIX | Benchmark | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.55 | ||
| Sortino ratioReturn per unit of downside risk | +1.21 | ||
| Omega ratioGain probability vs. loss probability | 1.68 | 1.37 | +0.31 |
| Calmar ratioReturn relative to maximum drawdown | 1.95 | 2.78 | -0.84 |
| Martin ratioReturn relative to average drawdown | 5.86 | 12.44 | -6.58 |
Dividends
Dividend History
Wilmington Municipal Bond Fund provided a 2.68% dividend yield over the last twelve months, with an annual payout of $0.33 per share. The fund has been increasing its distributions for 3 consecutive years.
| Period | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dividend | $0.33 | $0.36 | $0.26 | $0.25 | $0.18 | $0.22 | $0.23 | $0.51 | $0.28 | $0.38 | $0.34 | $0.51 |
Dividend yield | 2.68% | 2.85% | 2.11% | 2.03% | 1.45% | 1.68% | 1.72% | 3.84% | 2.15% | 2.92% | 2.63% | 3.81% |
Monthly Dividends
The table displays the monthly dividend distributions for Wilmington Municipal Bond Fund. The dividends shown in the table have been adjusted to account for any splits that may have occurred.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.00 | $0.14 | ||||||
| 2025 | $0.05 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.03 | $0.36 |
| 2024 | $0.03 | $0.02 | $0.00 | $0.03 | $0.03 | $0.00 | $0.03 | $0.03 | $0.02 | $0.05 | $0.03 | $0.00 | $0.26 |
| 2023 | $0.04 | $0.02 | $0.03 | $0.02 | $0.02 | $0.02 | $0.02 | $0.00 | $0.02 | $0.00 | $0.02 | $0.03 | $0.25 |
| 2022 | $0.02 | $0.02 | $0.02 | $0.02 | $0.00 | $0.00 | $0.00 | $0.02 | $0.02 | $0.02 | $0.02 | $0.02 | $0.18 |
| 2021 | $0.00 | $0.00 | $0.02 | $0.02 | $0.02 | $0.02 | $0.02 | $0.02 | $0.02 | $0.02 | $0.02 | $0.05 | $0.22 |
Drawdowns
Drawdowns Chart
The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.
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Worst Drawdowns
The table below displays the maximum drawdowns of the Wilmington Municipal Bond Fund. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.
The maximum drawdown for the Wilmington Municipal Bond Fund was 12.35%, occurring on Oct 25, 2022. Recovery took 720 trading sessions.
The current Wilmington Municipal Bond Fund drawdown is 1.06%.
Related event | Drawdown | Fall | Recovery | Underwater |
|---|---|---|---|---|
Bear market2022 | -12.35%Oct 2022 | 1y 2mo | 2y 10mo | 4y 1moAug 2021 - Sep 2025 |
COVID crash2020 | -12.08%Mar 2020 | 10d | 10mo 27d | 11mo 7dMar 2020 - Feb 2021 |
Financial crisis2007–2009 | -10.47%Oct 2008 | 1mo 3d | 6mo 7d | 7mo 10dSep 2008 - Apr 2009 |
1994 pullback1994 | -8.10%Nov 1994 | 9mo 21d | 3mo 25d | 1y 1moFeb 1994 - Mar 1995 |
2013 pullback2013 | -5.58%Jun 2013 | 1mo 23d | 9mo 20d | 11mo 13dMay 2013 - Apr 2014 |
Drawdown Indicators
| WTAIX | Benchmark | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -12.35% | -56.78% | +44.43% |
Max Drawdown (1Y)Largest decline over 1 year | -2.76% | -9.10% | +6.34% |
Max Drawdown (3Y)Largest decline over 3 years | -4.87% | -18.90% | +14.03% |
Max Drawdown (5Y)Largest decline over 5 years | -12.35% | -25.43% | +13.08% |
Max Drawdown (10Y)Largest decline over 10 years | -12.35% | -33.92% | +21.57% |
Current DrawdownCurrent decline from peak | -1.06% | -1.80% | +0.74% |
Average DrawdownAverage peak-to-trough decline | -1.63% | -10.71% | +9.08% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.91% | 2.03% | -1.12% |
Volatility
Volatility Chart
The chart below shows the rolling one-month volatility.
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