TDTF vs. IBII
TDTF (FlexShares iBoxx 5-Year Target Duration TIPS Index Fund) and IBII (iShares iBonds Oct 2032 Term TIPS ETF) are both Inflation-Protected Bonds funds - TDTF tracks the iBoxx 5-Year Target Duration TIPS while IBII tracks the ICE 2032 Maturity US Inflation-Linked Treasury Index. Both are passively managed. Over the past year, TDTF returned 4.72% vs 5.28% for IBII. With a 0.95 correlation, they move nearly in lockstep. TDTF charges 0.18%/yr vs 0.10%/yr for IBII.
Performance
TDTF vs. IBII - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, TDTF achieves a 1.52% return, which is significantly lower than IBII's 1.63% return.
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%
IBII
- 1D
- 0.02%
- 1M
- -0.38%
- YTD
- 1.63%
- 6M
- 1.21%
- 1Y
- 5.28%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
TDTF vs. IBII - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | |
|---|---|---|---|---|
TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | 1.52% | 7.83% | 2.40% | 3.85% |
IBII iShares iBonds Oct 2032 Term TIPS ETF | 1.63% | 8.65% | 1.21% | 4.85% |
Correlation
The correlation between TDTF and IBII 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 | 0.95 |
The correlation between TDTF and IBII has been stable across timeframes, ranging from 0.95 to 0.95 - a consistent structural relationship.
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
TDTF vs. IBII — Risk / Return Rank
TDTF
IBII
TDTF vs. IBII - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for FlexShares iBoxx 5-Year Target Duration TIPS Index Fund (TDTF) and iShares iBonds Oct 2032 Term TIPS ETF (IBII). 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.
| TDTF | IBII | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | 0.00 | ||
| Sortino ratioReturn per unit of downside risk | 0.00 | ||
| Omega ratioGain probability vs. loss probability | 1.28 | 1.28 | 0.00 |
| Calmar ratioReturn relative to maximum drawdown | 3.00 | 2.68 | +0.32 |
| Martin ratioReturn relative to average drawdown | 10.06 | 9.32 | +0.74 |
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
| TDTF | IBII | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.56 | 1.56 | 0.00 |
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 | 0.47 | 1.12 | -0.65 |
Drawdowns
TDTF vs. IBII - Drawdown Comparison
The maximum TDTF drawdown since its inception was -12.02%, which is greater than IBII's maximum drawdown of -4.65%. Use the drawdown chart below to compare losses from any high point for TDTF and IBII.
Loading charts...
Drawdown Indicators
| TDTF | IBII | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -12.02% | -4.65% | -7.37% |
Max Drawdown (1Y)Largest decline over 1 year | -1.58% | -1.98% | +0.40% |
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 | -0.57% | -0.65% | +0.08% |
Average DrawdownAverage peak-to-trough decline | -2.91% | -1.12% | -1.79% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.48% | 0.58% | -0.10% |
Volatility
TDTF vs. IBII - Volatility Comparison
The current volatility for FlexShares iBoxx 5-Year Target Duration TIPS Index Fund (TDTF) is 0.71%, while iShares iBonds Oct 2032 Term TIPS ETF (IBII) has a volatility of 0.89%. This indicates that TDTF experiences smaller price fluctuations and is considered to be less risky than IBII based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| TDTF | IBII | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.71% | 0.89% | -0.18% |
Volatility (6M)Calculated over the trailing 6-month period | 1.97% | 2.29% | -0.32% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.05% | 3.42% | -0.37% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.69% | 5.42% | +0.27% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.07% | 5.42% | -0.35% |
TDTF vs. IBII - Expense Ratio Comparison
TDTF has a 0.18% expense ratio, which is higher than IBII's 0.10% 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
TDTF vs. IBII - Dividend Comparison
TDTF's dividend yield for the trailing twelve months is around 4.71%, more than IBII's 4.05% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IBII iShares iBonds Oct 2032 Term TIPS ETF | 4.05% | 4.80% | 4.76% | 1.10% | 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, TDTF and IBII 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.
IBII has higher volatility (0.89%) compared to TDTF (0.71%). In terms of maximum drawdown, TDTF dropped -12.02% vs IBII's -4.65%.
On 1-year performance, IBII leads with 5.28% vs 4.72% for TDTF. On fees, IBII 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, IBII has performed better with a 5.28% return vs 4.72%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
IBII 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 4.05% for IBII.
TDTF tracks iBoxx 5-Year Target Duration TIPS, while IBII tracks ICE 2032 Maturity US Inflation-Linked Treasury Index. They also come from different issuers: Northern Trust and iShares. Their fees differ too: 0.18% for TDTF and 0.10% for IBII.
TDTF currently has the higher Sharpe Ratio (1.56 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.
Find the right allocation for TDTF and IBII
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