IEI vs. SPXB
IEI (iShares 3-7 Year Treasury Bond ETF) and SPXB (ProShares S&P 500 Bond ETF) are both exchange-traded funds - IEI is a Government Bonds fund tracking the ICE U.S. Treasury 3-7 Year Bond Index, while SPXB is a Corporate Bonds fund tracking the S&P 500 MarketAxess Investment Grade Corporate Bond Index. Both are passively managed. Their 0.59 correlation means they have sometimes moved together and sometimes differently. Both charge a 0.15% expense ratio.
Performance
IEI vs. SPXB - Performance Comparison
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Returns By Period
IEI
- 1D
- 0.29%
- 1M
- -0.14%
- 6M
- -0.12%
- YTD
- -0.22%
- 1Y
- 1.50%
- 3Y*
- 3.83%
- 5Y*
- 0.14%
- 10Y*
- 1.23%
- ALL TIME*
- 2.84%
SPXB
- 1D
- —
- 1M
- —
- 6M
- —
- YTD
- —
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- —
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $180.86M | $155.16M | $151.09M |
IEI vs. SPXB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
IEI iShares 3-7 Year Treasury Bond ETF | -0.22% | 6.96% | 1.81% | 4.42% | -9.51% | -2.54% | 6.95% | 5.71% | 3.23% |
SPXB ProShares S&P 500 Bond ETF | 0.00% | 0.00% | -3.45% | 8.83% | -16.66% | -1.89% | 10.33% | 15.34% | 1.05% |
Correlation
The correlation between IEI and SPXB is 0.59, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (3Y) Balances recent behavior with more history. | 0.43 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.62 |
Correlation (All Time) Calculated using the full available price history since May 3, 2018 | 0.59 |
The correlation between IEI and SPXB shifts across timeframes, from 0.43 (3 years) to 0.62 (5 years), reflecting how their relationship changes across market environments.
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Return for Risk
IEI vs. SPXB — Risk / Return Rank
IEI
SPXB
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
IEI vs. SPXB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares 3-7 Year Treasury Bond ETF (IEI) and ProShares S&P 500 Bond ETF (SPXB). 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.
| IEI | SPXB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | 1.09 | — | — |
| Calmar ratioReturn relative to maximum drawdown | 0.60 | — | — |
| Martin ratioReturn relative to average drawdown | 1.37 | — | — |
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Drawdowns
IEI vs. SPXB - Drawdown Comparison
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Drawdown Indicators
| IEI | SPXB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -14.60% | — | — |
Max Drawdown (1Y)Largest decline over 1 year | -2.50% | — | — |
Max Drawdown (3Y)Largest decline over 3 years | -3.66% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -13.52% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -14.60% | — | — |
Current DrawdownCurrent decline from peak | -1.66% | — | — |
Average DrawdownAverage peak-to-trough decline | -2.66% | — | — |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.10% | — | — |
Volatility
IEI vs. SPXB - Volatility Comparison
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Volatility by Period
| IEI | SPXB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.82% | — | — |
Volatility (6M)Calculated over the trailing 6-month period | 2.38% | — | — |
Volatility (1Y)Calculated over the trailing 1-year period | 2.90% | — | — |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.79% | — | — |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 3.93% | — | — |
IEI vs. SPXB - Expense Ratio Comparison
Both IEI and SPXB have an expense ratio of 0.15%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.
Dividends
IEI vs. SPXB - Dividend Comparison
IEI's dividend yield for the trailing twelve months is around 3.70%, while SPXB has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IEI iShares 3-7 Year Treasury Bond ETF | 3.70% | 3.48% | 3.18% | 2.36% | 1.37% | 0.73% | 1.12% | 2.01% | 1.95% | 1.51% | 1.33% | 1.39% |
SPXB ProShares S&P 500 Bond ETF | 0.00% | 0.00% | 1.22% | 4.04% | 3.14% | 2.00% | 2.64% | 3.48% | 2.52% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
IEI and SPXB have a correlation of 0.59, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
Both ETFs have the same 0.15% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.
IEI and SPXB have the same expense ratio: 0.15% per year.
IEI has the higher dividend yield at 3.70%, compared with 0.00% for SPXB.
IEI is categorized as Government Bonds, while SPXB is Corporate Bonds. IEI tracks ICE U.S. Treasury 3-7 Year Bond Index, while SPXB tracks S&P 500 MarketAxess Investment Grade Corporate Bond Index. They also come from different issuers: iShares and ProShares.
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