IBTF vs. SPTB
IBTF (iShares iBonds Dec 2025 Term Treasury ETF) and SPTB (State Street SPDR Portfolio Treasury ETF) are both Government Bonds funds - IBTF tracks the ICE 2025 Maturity US Treasury Index while SPTB tracks the Bloomberg U.S. Treasury Index. Both are passively managed. Over the past year, IBTF returned 2.14% vs 3.87% for SPTB. At a 0.15 correlation, their price movements are largely independent. IBTF charges 0.07%/yr vs 0.03%/yr for SPTB.
Performance
IBTF vs. SPTB - Performance Comparison
Loading charts...
Returns By Period
IBTF
- 1D
- 0.00%
- 1M
- 0.00%
- YTD
- 0.00%
- 6M
- 0.09%
- 1Y
- 2.14%
- 3Y*
- 3.66%
- 5Y*
- 0.90%
- 10Y*
- —
SPTB
- 1D
- -0.22%
- 1M
- 0.08%
- YTD
- -0.07%
- 6M
- -0.37%
- 1Y
- 3.87%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
IBTF vs. SPTB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | |
|---|---|---|---|
IBTF iShares iBonds Dec 2025 Term Treasury ETF | 0.00% | 3.81% | 3.60% |
SPTB State Street SPDR Portfolio Treasury ETF | -0.07% | 6.14% | 2.17% |
Correlation
The correlation between IBTF and SPTB is -0.04, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.04 |
Correlation (All Time) Calculated using the full available price history since May 22, 2024 | 0.15 |
The correlation between IBTF and SPTB shifts across timeframes, from -0.04 (1 year) to 0.15 (all time), reflecting how their relationship changes across market environments.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
IBTF vs. SPTB — Risk / Return Rank
IBTF
SPTB
IBTF vs. SPTB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2025 Term Treasury ETF (IBTF) 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.
| IBTF | SPTB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +6.01 | ||
| Sortino ratioReturn per unit of downside risk | +18.45 | ||
| Omega ratioGain probability vs. loss probability | 6.23 | 1.19 | +5.04 |
| Calmar ratioReturn relative to maximum drawdown | 59.41 | 1.34 | +58.07 |
| Martin ratioReturn relative to average drawdown | 269.70 | 3.98 | +265.72 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading charts...
Sharpe Ratios by Period
| IBTF | SPTB | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 7.08 | 1.07 | +6.01 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.39 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.44 | 0.92 | -0.47 |
Drawdowns
IBTF vs. SPTB - Drawdown Comparison
The maximum IBTF drawdown since its inception was -10.45%, which is greater than SPTB's maximum drawdown of -4.96%. Use the drawdown chart below to compare losses from any high point for IBTF and SPTB.
Loading charts...
Drawdown Indicators
| IBTF | SPTB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -10.45% | -4.96% | -5.49% |
Max Drawdown (1Y)Largest decline over 1 year | -0.04% | -2.90% | +2.86% |
Max Drawdown (3Y)Largest decline over 3 years | -0.67% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -9.53% | — | — |
Current DrawdownCurrent decline from peak | 0.00% | -1.94% | +1.94% |
Average DrawdownAverage peak-to-trough decline | -3.33% | -1.32% | -2.01% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.01% | 0.98% | -0.97% |
Volatility
IBTF vs. SPTB - Volatility Comparison
The current volatility for iShares iBonds Dec 2025 Term Treasury ETF (IBTF) is 0.00%, while State Street SPDR Portfolio Treasury ETF (SPTB) has a volatility of 1.11%. This indicates that IBTF 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.
Loading charts...
Volatility by Period
| IBTF | SPTB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.00% | 1.11% | -1.11% |
Volatility (6M)Calculated over the trailing 6-month period | 0.19% | 2.47% | -2.28% |
Volatility (1Y)Calculated over the trailing 1-year period | 0.36% | 3.64% | -3.28% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.38% | 4.42% | -2.04% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.56% | 4.42% | -1.86% |
IBTF vs. SPTB - Expense Ratio Comparison
IBTF 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
IBTF vs. SPTB - Dividend Comparison
IBTF's dividend yield for the trailing twelve months is around 2.08%, less than SPTB's 4.20% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 |
|---|---|---|---|---|---|---|---|
IBTF iShares iBonds Dec 2025 Term Treasury ETF | 2.08% | 3.83% | 4.32% | 4.03% | 1.93% | 0.57% | 0.59% |
SPTB State Street SPDR Portfolio Treasury ETF | 4.20% | 4.23% | 2.76% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
IBTF and SPTB have a correlation of -0.04, 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 IBTF (0.00%). In terms of maximum drawdown, IBTF dropped -10.45% vs SPTB's -4.96%.
On 1-year performance, SPTB leads with 3.87% vs 2.14% for IBTF. On fees, SPTB is cheaper at 0.03% per year. On volatility, IBTF has been the lower-risk option at 0.00%. 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 2.14%. 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 IBTF.
SPTB has the higher dividend yield at 4.20%, compared with 2.08% for IBTF.
IBTF tracks ICE 2025 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 IBTF and 0.03% for SPTB.
IBTF currently has the higher Sharpe Ratio (7.08 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.
Find the right allocation for IBTF and SPTB
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer