IBIH vs. TDTF
IBIH (iShares iBonds Oct 2031 Term TIPS ETF) and TDTF (FlexShares iBoxx 5-Year Target Duration TIPS Index Fund) are both Inflation-Protected Bonds funds - IBIH tracks the ICE 2031 Maturity US Inflation-Linked Treasury Index while TDTF tracks the iBoxx 5-Year Target Duration TIPS. Both are passively managed. Over the past year, IBIH returned 5.04% vs 4.72% for TDTF. With a 0.95 correlation, they move nearly in lockstep. IBIH charges 0.10%/yr vs 0.18%/yr for TDTF.
Performance
IBIH vs. TDTF - Performance Comparison
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Returns By Period
In the year-to-date period, IBIH achieves a 1.60% return, which is significantly higher than TDTF's 1.52% return.
IBIH
- 1D
- -0.08%
- 1M
- -0.34%
- YTD
- 1.60%
- 6M
- 1.34%
- 1Y
- 5.04%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
TDTF
- 1D
- 0.00%
- 1M
- -0.28%
- YTD
- 1.52%
- 6M
- 1.29%
- 1Y
- 4.72%
- 3Y*
- 4.46%
- 5Y*
- 1.72%
- 10Y*
- 2.94%
IBIH vs. TDTF - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | |
|---|---|---|---|---|
IBIH iShares iBonds Oct 2031 Term TIPS ETF | 1.60% | 8.47% | 1.73% | 4.60% |
TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | 1.52% | 7.83% | 2.40% | 3.85% |
Correlation
The correlation between IBIH and TDTF is 0.95, 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 | 0.95 |
Correlation (All Time) Calculated using the full available price history since Sep 22, 2023 | 0.96 |
The correlation between IBIH and TDTF has been stable across timeframes, ranging from 0.95 to 0.95 - a consistent structural relationship.
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Return for Risk
IBIH vs. TDTF — Risk / Return Rank
IBIH
TDTF
IBIH vs. TDTF - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Oct 2031 Term TIPS ETF (IBIH) and FlexShares iBoxx 5-Year Target Duration TIPS Index Fund (TDTF). 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.
| IBIH | TDTF | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.05 | ||
| Sortino ratioReturn per unit of downside risk | +0.13 | ||
| Omega ratioGain probability vs. loss probability | 1.29 | 1.28 | +0.01 |
| Calmar ratioReturn relative to maximum drawdown | 2.98 | 3.00 | -0.02 |
| Martin ratioReturn relative to average drawdown | 10.16 | 10.06 | +0.10 |
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
| IBIH | TDTF | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.62 | 1.56 | +0.05 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.30 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.58 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.24 | 0.47 | +0.77 |
Drawdowns
IBIH vs. TDTF - Drawdown Comparison
The maximum IBIH drawdown since its inception was -3.94%, smaller than the maximum TDTF drawdown of -12.02%. Use the drawdown chart below to compare losses from any high point for IBIH and TDTF.
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Drawdown Indicators
| IBIH | TDTF | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -3.94% | -12.02% | +8.08% |
Max Drawdown (1Y)Largest decline over 1 year | -1.70% | -1.58% | -0.12% |
Max Drawdown (3Y)Largest decline over 3 years | — | -3.79% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -12.02% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -12.02% | — |
Current DrawdownCurrent decline from peak | -0.62% | -0.57% | -0.05% |
Average DrawdownAverage peak-to-trough decline | -0.96% | -2.91% | +1.95% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.51% | 0.48% | +0.03% |
Volatility
IBIH vs. TDTF - Volatility Comparison
iShares iBonds Oct 2031 Term TIPS ETF (IBIH) has a higher volatility of 0.83% compared to FlexShares iBoxx 5-Year Target Duration TIPS Index Fund (TDTF) at 0.71%. This indicates that IBIH's price experiences larger fluctuations and is considered to be riskier than TDTF based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IBIH | TDTF | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.83% | 0.71% | +0.12% |
Volatility (6M)Calculated over the trailing 6-month period | 2.09% | 1.97% | +0.12% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.15% | 3.05% | +0.10% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.93% | 5.69% | -0.76% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.93% | 5.07% | -0.14% |
IBIH vs. TDTF - Expense Ratio Comparison
IBIH has a 0.10% expense ratio, which is lower than TDTF's 0.18% 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
IBIH vs. TDTF - Dividend Comparison
IBIH's dividend yield for the trailing twelve months is around 3.90%, less than TDTF's 4.71% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IBIH iShares iBonds Oct 2031 Term TIPS ETF | 3.90% | 4.68% | 4.34% | 0.70% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | 4.71% | 4.58% | 3.98% | 3.97% | 7.60% | 4.55% | 1.13% | 1.80% | 2.60% | 2.20% | 1.51% | 0.21% |
Frequently Asked Questions
With a correlation of 0.95, IBIH and TDTF move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
IBIH has higher volatility (0.83%) compared to TDTF (0.71%). In terms of maximum drawdown, IBIH dropped -3.94% vs TDTF's -12.02%.
On 1-year performance, IBIH leads with 5.04% vs 4.72% for TDTF. On fees, IBIH is cheaper at 0.10% per year. On volatility, TDTF has been the lower-risk option at 0.71%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 1-year period, IBIH has performed better with a 5.04% return vs 4.72%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
IBIH is cheaper with a 0.10% expense ratio, compared with 0.18% for TDTF.
TDTF has the higher dividend yield at 4.71%, compared with 3.90% for IBIH.
IBIH tracks ICE 2031 Maturity US Inflation-Linked Treasury Index, while TDTF tracks iBoxx 5-Year Target Duration TIPS. They also come from different issuers: iShares and Northern Trust. Their fees differ too: 0.10% for IBIH and 0.18% for TDTF.
IBIH currently has the higher Sharpe Ratio (1.62 vs 1.56), 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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