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WTAIX vs. IRBO
Performance
Return for Risk
Drawdowns
Volatility
Dividends

WTAIX vs. IRBO

Last updated Jun 23, 2026

WTAIX (Wilmington Municipal Bond Fund) and IRBO (iShares Future AI & Tech ETF) are both funds - WTAIX is a Municipal Bonds fund managed by Wilmington Funds, while IRBO is a Robotics fund tracking the Morningstar Global Artificial Intelligence Select Index. Over the past 5 years, WTAIX returned 0.66%/yr vs 13.47%/yr for IRBO. At a 0.06 correlation, their price movements are largely independent. WTAIX charges 0.49%/yr vs 0.47%/yr for IRBO.

Performance

WTAIX vs. IRBO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Wilmington Municipal Bond Fund (WTAIX) and iShares Future AI & Tech ETF (IRBO). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, WTAIX achieves a 0.88% return, which is significantly lower than IRBO's 64.94% return.

WTAIX

1D
0.08%
1M
1.21%
YTD
0.88%
6M
1.19%
1Y
5.35%
3Y*
3.26%
5Y*
0.66%
10Y*
1.50%

IRBO

1D
0.66%
1M
15.54%
YTD
64.94%
6M
64.94%
1Y
106.73%
3Y*
35.95%
5Y*
13.47%
10Y*
—
*Multi-year figures are annualized to reflect compound growth (CAGR)

WTAIX vs. IRBO - Yearly Performance Comparison

2026 (YTD)20252024202320222021202020192018
WTAIX
Wilmington Municipal Bond Fund		0.88%5.05%0.73%5.14%-8.01%0.55%2.60%7.12%1.70%
IRBO
iShares Future AI & Tech ETF		64.94%29.97%8.02%36.37%-37.89%6.32%48.85%34.47%-13.76%

Correlation

The correlation between WTAIX and IRBO is 0.11, which is low. Their price movements are largely independent, making them effective diversification partners.

Correlation
Correlation (1Y)
Calculated over the trailing 1-year period

0.11

Correlation (3Y)
Calculated over the trailing 3-year period

0.10

Correlation (5Y)
Calculated over the trailing 5-year period

0.12

Correlation (All Time)
Calculated using the full available price history since Jun 28, 2018

0.06

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

Wilmington Municipal Bond Fund

iShares Future AI & Tech ETF

Often compared with WTAIX:
WTAIX vs. THNQWTAIX vs. QTUMWTAIX vs. ^GSPCWTAIX vs. SMHWTAIX vs. WMLIXWTAIX vs. WMRIXWTAIX vs. WIBMX
Often compared with IRBO:
IRBO vs. BOTZIRBO vs. AIQIRBO vs. ROBOIRBO vs. ROBTIRBO vs. ARKQIRBO vs. IBOTIRBO vs. IGPT

Return for Risk

WTAIX vs. IRBO — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
WTAIX
WTAIX Risk / Return Rank: 6565
Overall Rank
WTAIX Sharpe Ratio Rank: 8686
Sharpe Ratio Rank
WTAIX Sortino Ratio Rank: 8989
Sortino Ratio Rank
WTAIX Omega Ratio Rank: 9393
Omega Ratio Rank
WTAIX Calmar Ratio Rank: 3131
Calmar Ratio Rank
WTAIX Martin Ratio Rank: 2727
Martin Ratio Rank
IRBO
IRBO Risk / Return Rank: 8888
Overall Rank
IRBO Sharpe Ratio Rank: 9393
Sharpe Ratio Rank
IRBO Sortino Ratio Rank: 8282
Sortino Ratio Rank
IRBO Omega Ratio Rank: 8383
Omega Ratio Rank
IRBO Calmar Ratio Rank: 9191
Calmar Ratio Rank
IRBO Martin Ratio Rank: 8989
Martin Ratio Rank
The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

WTAIX vs. IRBO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Wilmington Municipal Bond Fund (WTAIX) and iShares Future AI & Tech ETF (IRBO). 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.

WTAIXIRBODifference
Sharpe ratioReturn per unit of total volatility
2.58
3.20

-0.62

Sortino ratioReturn per unit of downside risk
3.97
3.48

+0.49

Omega ratioGain probability vs. loss probability

1.68

1.48

+0.20

Calmar ratioReturn relative to maximum drawdown

1.95

5.71

-3.76

Martin ratioReturn relative to average drawdown

5.86

18.73

-12.87

WTAIX vs. IRBO - Sharpe Ratio Comparison

The current WTAIX Sharpe Ratio is 2.58, which is comparable to the IRBO Sharpe Ratio of 3.20. The chart below compares the historical Sharpe Ratios of WTAIX and IRBO, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

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Drawdowns

WTAIX vs. IRBO - Drawdown Comparison

The maximum WTAIX drawdown since its inception was -12.35%, smaller than the maximum IRBO drawdown of -54.50%. Use the drawdown chart below to compare losses from any high point for WTAIX and IRBO.

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Drawdown Indicators

WTAIXIRBODifference

Max Drawdown

Largest peak-to-trough decline

-12.35%

-54.50%

+42.15%

Max Drawdown (1Y)

Largest decline over 1 year

-2.76%

-18.81%

+16.05%

Max Drawdown (3Y)

Largest decline over 3 years

-4.87%

-32.44%

+27.57%

Max Drawdown (5Y)

Largest decline over 5 years

-12.35%

-50.53%

+38.18%

Max Drawdown (10Y)

Largest decline over 10 years

-12.35%

—

—

Current Drawdown

Current decline from peak

-1.06%

-1.59%

+0.53%

Average Drawdown

Average peak-to-trough decline

-1.63%

-19.77%

+18.14%

Ulcer Index

Depth and duration of drawdowns from previous peaks

0.91%

5.72%

-4.81%

Volatility

WTAIX vs. IRBO - Volatility Comparison

The current volatility for Wilmington Municipal Bond Fund (WTAIX) is 0.61%, while iShares Future AI & Tech ETF (IRBO) has a volatility of 17.99%. This indicates that WTAIX experiences smaller price fluctuations and is considered to be less risky than IRBO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

WTAIXIRBODifference

Volatility (1M)

Calculated over the trailing 1-month period

0.61%

17.99%

-17.38%

Volatility (6M)

Calculated over the trailing 6-month period

1.66%

29.22%

-27.56%

Volatility (1Y)

Calculated over the trailing 1-year period

2.08%

33.64%

-31.56%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

3.08%

29.43%

-26.35%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

3.43%

28.21%

-24.78%

WTAIX vs. IRBO - Expense Ratio Comparison

WTAIX has a 0.49% expense ratio, which is higher than IRBO's 0.47% expense ratio.

Dividends

WTAIX vs. IRBO - Dividend Comparison

WTAIX's dividend yield for the trailing twelve months is around 2.68%, more than IRBO's 0.05% yield.

PositionTTM20252024202320222021202020192018201720162015
IRBO
iShares Future AI & Tech ETF		0.05%0.00%0.50%0.88%0.75%2.41%0.53%0.69%0.34%0.00%0.00%0.00%
WTAIX
Wilmington Municipal Bond Fund		2.68%2.85%2.11%2.03%1.45%1.68%1.72%3.84%2.15%2.92%2.63%3.81%

Frequently Asked Questions

WTAIX and IRBO have a correlation of 0.11, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

IRBO has higher volatility (17.99%) compared to WTAIX (0.61%). In terms of maximum drawdown, WTAIX dropped -12.35% vs IRBO's -54.50%.

IRBO currently has the higher Sharpe Ratio (3.20 vs 2.58), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.

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