IBIL vs. STPZ
IBIL (iShares iBonds Oct 2035 Term TIPS ETF) and STPZ (PIMCO 1-5 Year US TIPS Index ETF) are both Inflation-Protected Bonds funds - IBIL tracks the ICE 2035 Maturity US Treasury TIPS Index while STPZ tracks the ICE BofA US Inflation-Linked Treasury (1-5 Y). Both are passively managed. Over the past year, IBIL returned 2.51% vs 2.45% for STPZ. Their 0.68 correlation means they have sometimes moved together and sometimes differently. IBIL charges 0.10%/yr vs 0.20%/yr for STPZ.
Performance
IBIL vs. STPZ - Performance Comparison
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Returns By Period
In the year-to-date period, IBIL achieves a 0.60% return, which is significantly lower than STPZ's 1.43% return.
IBIL
- 1D
- 0.13%
- 1M
- -0.59%
- 6M
- 0.56%
- YTD
- 0.60%
- 1Y
- 2.51%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- 3.96%
STPZ
- 1D
- -0.04%
- 1M
- 0.02%
- 6M
- 1.02%
- YTD
- 1.43%
- 1Y
- 2.45%
- 3Y*
- 4.83%
- 5Y*
- 2.65%
- 10Y*
- 2.82%
- ALL TIME*
- 2.40%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $384.77K | $347.69K | $275.27K | |
| $4.22M | $3.63M | $4.24M |
IBIL vs. STPZ - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
IBIL iShares iBonds Oct 2035 Term TIPS ETF | 0.60% | 4.77% |
STPZ PIMCO 1-5 Year US TIPS Index ETF | 1.43% | 3.63% |
Correlation
The correlation between IBIL and STPZ is 0.66, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.66 |
Correlation (All Time) Calculated using the full available price history since Mar 26, 2025 | 0.68 |
The correlation between IBIL and STPZ has been stable across timeframes, ranging from 0.66 to 0.68 - a consistent structural relationship.
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Return for Risk
IBIL vs. STPZ — Risk / Return Rank
IBIL
STPZ
IBIL vs. STPZ - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Oct 2035 Term TIPS ETF (IBIL) and PIMCO 1-5 Year US TIPS Index ETF (STPZ). 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.
| IBIL | STPZ | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.86 | ||
| Sortino ratioReturn per unit of downside risk | -1.24 | ||
| Omega ratioGain probability vs. loss probability | 1.09 | 1.24 | -0.15 |
| Calmar ratioReturn relative to maximum drawdown | 0.92 | 2.64 | -1.72 |
| Martin ratioReturn relative to average drawdown | 2.03 | 7.03 | -5.00 |
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Drawdowns
IBIL vs. STPZ - Drawdown Comparison
The maximum IBIL drawdown since its inception was -5.28%, smaller than the maximum STPZ drawdown of -6.77%. Use the drawdown chart below to compare losses from any high point for IBIL and STPZ.
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Drawdown Indicators
| IBIL | STPZ | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -5.28% | -6.77% | +1.49% |
Max Drawdown (1Y)Largest decline over 1 year | -2.76% | -0.93% | -1.83% |
Max Drawdown (3Y)Largest decline over 3 years | — | -1.35% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -6.70% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -6.77% | — |
Current DrawdownCurrent decline from peak | -1.62% | -0.46% | -1.16% |
Average DrawdownAverage peak-to-trough decline | -1.44% | -1.30% | -0.14% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.24% | 0.35% | +0.89% |
Volatility
IBIL vs. STPZ - Volatility Comparison
iShares iBonds Oct 2035 Term TIPS ETF (IBIL) has a higher volatility of 1.01% compared to PIMCO 1-5 Year US TIPS Index ETF (STPZ) at 0.46%. This indicates that IBIL's price experiences larger fluctuations and is considered to be riskier than STPZ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IBIL | STPZ | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.01% | 0.46% | +0.55% |
Volatility (6M)Calculated over the trailing 6-month period | 3.30% | 1.42% | +1.88% |
Volatility (1Y)Calculated over the trailing 1-year period | 5.55% | 1.87% | +3.68% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 7.85% | 3.28% | +4.57% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 7.85% | 2.98% | +4.87% |
IBIL vs. STPZ - Expense Ratio Comparison
IBIL has a 0.10% expense ratio, which is lower than STPZ's 0.20% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
IBIL vs. STPZ - Dividend Comparison
IBIL's dividend yield for the trailing twelve months is around 5.14%, less than STPZ's 5.27% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IBIL iShares iBonds Oct 2035 Term TIPS ETF | 5.14% | 2.93% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
STPZ PIMCO 1-5 Year US TIPS Index ETF | 5.27% | 3.65% | 1.97% | 1.63% | 5.88% | 3.65% | 1.86% | 1.76% | 2.23% | 1.51% | 0.65% | 0.49% |
Frequently Asked Questions
IBIL and STPZ have a correlation of 0.66, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IBIL has higher volatility (1.01%) compared to STPZ (0.46%). In terms of maximum drawdown, IBIL dropped -5.28% vs STPZ's -6.77%.
On 1-year performance, IBIL leads with 2.51% vs 2.45% for STPZ. On fees, IBIL is cheaper at 0.10% per year. On volatility, STPZ has been the lower-risk option at 0.46%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 1-year period, IBIL has performed better with a 2.51% return vs 2.45%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
IBIL is cheaper with a 0.10% expense ratio, compared with 0.20% for STPZ.
STPZ has the higher dividend yield at 5.27%, compared with 5.14% for IBIL.
IBIL tracks ICE 2035 Maturity US Treasury TIPS Index, while STPZ tracks ICE BofA US Inflation-Linked Treasury (1-5 Y). They also come from different issuers: iShares and PIMCO. Their fees differ too: 0.10% for IBIL and 0.20% for STPZ.
STPZ currently has the higher Sharpe Ratio (1.32 vs 0.46), 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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