iShares iBonds Dec 2045 Term Treasury ETF (IBGB) Performance
IBGB total return
Distributions reinvested · as of Oct 23, 2026- YTD
- −3.0% since Dec 31, 2025
- 1 year
- −5.4% total return
- Since first price
- −0.4% since 2025
IBGB trailing returns vs AGG, TLT, SPY
| Period | IBGB total return | Price only | U.S. bonds (AGG) | 20+ yr Treasuries (TLT) | S&P 500 (SPY) |
|---|---|---|---|---|---|
| 1 month | +1.5% | +1.0% | +0.9% | +1.5% | −1.0% |
| 3 months | −0.8% | −2.0% | −0.4% | −1.0% | +3.2% |
| 6 months | −3.3% | −5.6% | −1.5% | −3.8% | +7.8% |
| YTD | −3.0% | −6.4% | −1.0% | −3.4% | +12.3% |
| 1 year | −5.4% | −9.6% | −1.1% | −6.9% | +14.4% |
| Since inceptionMar 26, 2025 | −0.4% | −7.2% | — | — | — |
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: IBGB vs AGG
From Mar 26, 2025: IBGB grew to $9,958, AGG to $10,407.
Year-end values with distributions reinvested, no taxes or trading costs. Start: first common trading day of both funds.
IBGB returns by calendar year
2026 is year to date.
IBGB annual returns table
| Year | IBGB | Largest drop | AGG | TLT | SPY |
|---|---|---|---|---|---|
| 2026YTD | −3.0% | −10.8% | −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.
IBGB largest drawdowns
Now 6.7% below the high| Peak | Decline | Bottom | Recovered | Fall | Underwater |
|---|---|---|---|---|---|
| Feb 27, 2026 | −10.8% | Oct 5, 2026 | not yet | 7 months | 8 months so far |
| Apr 4, 2025 | −8.1% | May 21, 2025 | Oct 10, 2025 | 47 days | 6 months |
Declines from a closing high (distributions reinvested) of 5% or more. Underwater = time from the peak until the old high was regained.
IBGB risk statistics
| Statistic | Since 2025 |
|---|---|
| Annualized return | −2.8% |
| Volatility (annualized) | 8.3% |
| Sharpe ratio | -0.76 |
| Sortino ratio | -0.88 |
| Best month | +3.8% |
| Worst month | −4.7% |
| Best 12 months | +4.5% |
| Worst 12 months | −7.0% |
| Positive months | 61% |
| 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.
IBGB rolling returns
| Holding period | Periods | Worst | Median | Best | Positive |
|---|---|---|---|---|---|
| 1-year | 8 | −7.0% | +0.6% | +4.5% | 75% |
Every holding period starting at a month-end since 2025. Returns for 3 years and longer are annualized.
IBGB performance overview
iShares iBonds Dec 2045 Term Treasury ETF (IBGB) returned −5.4% over the past year, with distributions reinvested. Since its first recorded price on Mar 26, 2025 it has returned −0.4%. Over the same year U.S. bonds (AGG) returned −1.1%.
The deepest decline was −10.8%, from Feb 27, 2026 to Oct 5, 2026; the fund has not yet regained that high. Volatility has been 8.3% a year.
Related: IBGB chart, IBGB dividends, IBGB bond profile. See the IBGB overview for the latest quote and fund facts.
IBGB performance FAQ
What is the IBGB return over the past year?
IBGB returned −5.4% over the 12 months to October 23, 2026, including reinvested distributions. On price alone it fell 9.6%.
How much would $10,000 invested in IBGB be worth?
$10,000 invested in IBGB at its first recorded close on March 26, 2025 would be worth about $9,958 on October 23, 2026 with distributions reinvested.
What is the biggest drawdown of IBGB?
The largest peak-to-trough decline was −10.8% between February 27, 2026 and October 5, 2026. It has not yet recovered to that high; it is 6.7% below its peak.
How volatile is IBGB?
Over the past history IBGB had an annualized volatility of 8.3% and a Sharpe ratio of -0.76 (excess return over 1–3 month T-bills per unit of risk).