iBonds Dec 2031 Term Muni Bond ETF (IBMT) Performance
IBMT total return
Distributions reinvested · as of Oct 23, 2026- YTD
- −0.5% since Dec 31, 2025
- 1 year
- +0.0% total return
- Since first price
- +5.4% since 2025
IBMT trailing returns vs AGG, TLT, SPY
| Period | IBMT total return | Price only | U.S. bonds (AGG) | 20+ yr Treasuries (TLT) | S&P 500 (SPY) |
|---|---|---|---|---|---|
| 1 month | +2.3% | +2.1% | +0.9% | +1.5% | −1.0% |
| 3 months | +0.4% | −0.2% | −0.4% | −1.0% | +3.2% |
| 6 months | −0.5% | −1.7% | −1.5% | −3.8% | +7.8% |
| YTD | −0.5% | −2.3% | −1.0% | −3.4% | +12.3% |
| 1 year | +0.0% | −2.3% | −1.1% | −6.9% | +14.4% |
| Since inceptionMar 26, 2025 | +5.4% | +1.7% | — | — | — |
Total return from adjusted closes (distributions reinvested, before tax). Periods of 3 years or more are also shown annualized. Price only excludes distributions.
Growth of $10,000: IBMT vs AGG
From Mar 26, 2025: IBMT grew to $10,536, AGG to $10,407.
Year-end values with distributions reinvested, no taxes or trading costs. Start: first common trading day of both funds.
IBMT returns by calendar year
2026 is year to date.
IBMT annual returns table
| Year | IBMT | Largest drop | AGG | TLT | SPY |
|---|---|---|---|---|---|
| 2026YTD | −0.5% | −5.9% | −1.0% | −3.4% | +12.3% |
Largest drop = deepest fall from a high within that calendar year.
Calendar-year return vs largest drop within the year
Most years include a sizable fall at some point even when the year ends higher.
IBMT largest drawdowns
Now 2.3% below the high| Peak | Decline | Bottom | Recovered | Fall | Underwater |
|---|---|---|---|---|---|
| Feb 26, 2026 | −5.9% | Sep 29, 2026 | not yet | 7 months | 8 months so far |
Declines from a closing high (distributions reinvested) of 5% or more. Underwater = time from the peak until the old high was regained.
IBMT risk statistics
| Statistic | Since 2025 |
|---|---|
| Annualized return | +1.3% |
| Volatility (annualized) | 4.1% |
| Sharpe ratio | -0.61 |
| Sortino ratio | -0.66 |
| Best month | +1.3% |
| Worst month | −3.0% |
| Best 12 months | +5.5% |
| Worst 12 months | −2.4% |
| Positive months | 78% |
| Beta vs S&P 500 | — |
| Correlation with S&P 500 | — |
From monthly total returns. Sharpe and Sortino use 1–3 month T-bills (BIL) as the risk-free rate, so they need history from 2007 on.
IBMT rolling returns
| Holding period | Periods | Worst | Median | Best | Positive |
|---|---|---|---|---|---|
| 1-year | 8 | −2.4% | +3.3% | +5.5% | 88% |
Every holding period starting at a month-end since 2025. Returns for 3 years and longer are annualized.
IBMT performance overview
iBonds Dec 2031 Term Muni Bond ETF (IBMT) returned +0.0% over the past year, with distributions reinvested. Since its first recorded price on Mar 26, 2025 it has returned +5.4%. Over the same year U.S. bonds (AGG) returned −1.1%.
The deepest decline was −5.9%, from Feb 26, 2026 to Sep 29, 2026; the fund has not yet regained that high. Volatility has been 4.1% a year.
Related: IBMT chart, IBMT dividends, IBMT bond profile. See the IBMT overview for the latest quote and fund facts.
IBMT performance FAQ
What is the IBMT return over the past year?
IBMT returned +0.0% over the 12 months to October 23, 2026, including reinvested distributions. On price alone it fell 2.3%.
How much would $10,000 invested in IBMT be worth?
$10,000 invested in IBMT at its first recorded close on March 26, 2025 would be worth about $10,536 on October 23, 2026 with distributions reinvested.
What is the biggest drawdown of IBMT?
The largest peak-to-trough decline was −5.9% between February 26, 2026 and September 29, 2026. It has not yet recovered to that high; it is 2.3% below its peak.
How volatile is IBMT?
Over the past history IBMT had an annualized volatility of 4.1% and a Sharpe ratio of -0.61 (excess return over 1–3 month T-bills per unit of risk).