IBTJ vs. SPTB
IBTJ (iShares iBonds Dec 2029 Term Treasury ETF) and SPTB (State Street SPDR Portfolio Treasury ETF) are both Government Bonds funds - IBTJ tracks the ICE 2029 Maturity US Treasury Index while SPTB tracks the Bloomberg U.S. Treasury Index. Both are passively managed. Over the past year, IBTJ returned 3.49% vs 3.87% for SPTB. Their correlation of 0.92 suggests significant overlap in exposure. IBTJ charges 0.07%/yr vs 0.03%/yr for SPTB.
Performance
IBTJ vs. SPTB - Performance Comparison
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Returns By Period
In the year-to-date period, IBTJ achieves a -0.10% return, which is significantly lower than SPTB's -0.07% return.
IBTJ
- 1D
- -0.14%
- 1M
- -0.10%
- YTD
- -0.10%
- 6M
- 0.01%
- 1Y
- 3.49%
- 3Y*
- 3.51%
- 5Y*
- 0.06%
- 10Y*
- —
SPTB
- 1D
- -0.22%
- 1M
- 0.08%
- YTD
- -0.07%
- 6M
- -0.37%
- 1Y
- 3.87%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
IBTJ vs. SPTB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | |
|---|---|---|---|
IBTJ iShares iBonds Dec 2029 Term Treasury ETF | -0.10% | 6.89% | 2.97% |
SPTB State Street SPDR Portfolio Treasury ETF | -0.07% | 6.14% | 2.17% |
Correlation
The correlation between IBTJ and SPTB is 0.90, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.90 |
Correlation (All Time) Calculated using the full available price history since May 22, 2024 | 0.92 |
The correlation between IBTJ and SPTB has been stable across timeframes, ranging from 0.90 to 0.92 - a consistent structural relationship.
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Return for Risk
IBTJ vs. SPTB — Risk / Return Rank
IBTJ
SPTB
IBTJ vs. SPTB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2029 Term Treasury ETF (IBTJ) and State Street SPDR Portfolio Treasury ETF (SPTB). 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.
| IBTJ | SPTB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.37 | ||
| Sortino ratioReturn per unit of downside risk | +0.62 | ||
| Omega ratioGain probability vs. loss probability | 1.26 | 1.19 | +0.07 |
| Calmar ratioReturn relative to maximum drawdown | 2.17 | 1.34 | +0.83 |
| Martin ratioReturn relative to average drawdown | 6.23 | 3.98 | +2.25 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| IBTJ | SPTB | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.44 | 1.07 | +0.37 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.01 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.02 | 0.92 | -0.94 |
Drawdowns
IBTJ vs. SPTB - Drawdown Comparison
The maximum IBTJ drawdown since its inception was -20.19%, which is greater than SPTB's maximum drawdown of -4.96%. Use the drawdown chart below to compare losses from any high point for IBTJ and SPTB.
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Drawdown Indicators
| IBTJ | SPTB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -20.19% | -4.96% | -15.23% |
Max Drawdown (1Y)Largest decline over 1 year | -1.62% | -2.90% | +1.28% |
Max Drawdown (3Y)Largest decline over 3 years | -4.47% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -17.21% | — | — |
Current DrawdownCurrent decline from peak | -6.30% | -1.94% | -4.36% |
Average DrawdownAverage peak-to-trough decline | -9.73% | -1.32% | -8.41% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.56% | 0.98% | -0.42% |
Volatility
IBTJ vs. SPTB - Volatility Comparison
The current volatility for iShares iBonds Dec 2029 Term Treasury ETF (IBTJ) is 0.64%, while State Street SPDR Portfolio Treasury ETF (SPTB) has a volatility of 1.11%. This indicates that IBTJ experiences smaller price fluctuations and is considered to be less risky than SPTB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IBTJ | SPTB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.64% | 1.11% | -0.47% |
Volatility (6M)Calculated over the trailing 6-month period | 1.56% | 2.47% | -0.91% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.43% | 3.64% | -1.21% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.74% | 4.42% | +1.32% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.99% | 4.42% | +1.57% |
IBTJ vs. SPTB - Expense Ratio Comparison
IBTJ has a 0.07% expense ratio, which is higher than SPTB's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
IBTJ vs. SPTB - Dividend Comparison
IBTJ's dividend yield for the trailing twelve months is around 3.81%, less than SPTB's 4.20% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 |
|---|---|---|---|---|---|---|---|
IBTJ iShares iBonds Dec 2029 Term Treasury ETF | 3.81% | 3.78% | 3.95% | 3.48% | 1.86% | 0.74% | 0.61% |
SPTB State Street SPDR Portfolio Treasury ETF | 4.20% | 4.23% | 2.76% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
IBTJ and SPTB have a correlation of 0.90, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SPTB has higher volatility (1.11%) compared to IBTJ (0.64%). In terms of maximum drawdown, IBTJ dropped -20.19% vs SPTB's -4.96%.
On 1-year performance, SPTB leads with 3.87% vs 3.49% for IBTJ. On fees, SPTB is cheaper at 0.03% per year. On volatility, IBTJ has been the lower-risk option at 0.64%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 1-year period, SPTB has performed better with a 3.87% return vs 3.49%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
SPTB is cheaper with a 0.03% expense ratio, compared with 0.07% for IBTJ.
SPTB has the higher dividend yield at 4.20%, compared with 3.81% for IBTJ.
IBTJ tracks ICE 2029 Maturity US Treasury Index, while SPTB tracks Bloomberg U.S. Treasury Index. They also come from different issuers: iShares and State Street. Their fees differ too: 0.07% for IBTJ and 0.03% for SPTB.
IBTJ currently has the higher Sharpe Ratio (1.44 vs 1.07), 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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