FSTZX vs. TDTF
FSTZX (Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund) and TDTF (FlexShares iBoxx 5-Year Target Duration TIPS Index Fund) are both Inflation-Protected Bonds funds. Over the past 3 years, FSTZX returned 4.66%/yr vs 4.52%/yr for TDTF. Their correlation of 0.84 means they have usually moved in the same direction. FSTZX charges 0.00%/yr vs 0.18%/yr for TDTF.
Performance
FSTZX vs. TDTF - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, FSTZX achieves a 0.67% return, which is significantly lower than TDTF's 0.96% return.
FSTZX
- 1D
- 0.00%
- 1M
- -0.90%
- 6M
- 0.06%
- YTD
- 0.67%
- 1Y
- 1.86%
- 3Y*
- 4.66%
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- 2.92%
TDTF
- 1D
- -0.04%
- 1M
- -0.17%
- 6M
- 0.35%
- YTD
- 0.96%
- 1Y
- 2.15%
- 3Y*
- 4.52%
- 5Y*
- 1.06%
- 10Y*
- 2.82%
- ALL TIME*
- 2.23%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $2.84M | $3.24M | $4.14M |
FSTZX vs. TDTF - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
FSTZX Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund | 0.67% | 5.99% | 4.87% | 4.67% | -2.83% | 1.32% |
TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | 0.96% | 7.83% | 2.40% | 4.10% | -9.73% | 1.02% |
Correlation
The correlation between FSTZX and TDTF is 0.73, 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. | 0.73 |
Correlation (3Y) Balances recent behavior with more history. | 0.80 |
Correlation (All Time) Calculated using the full available price history since Aug 16, 2021 | 0.84 |
The correlation between FSTZX and TDTF shifts across timeframes, from 0.73 (1 year) to 0.84 (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
FSTZX vs. TDTF — Risk / Return Rank
FSTZX
TDTF
FSTZX vs. TDTF - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund (FSTZX) 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.
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.
| FSTZX | TDTF | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.09 | ||
| Sortino ratioReturn per unit of downside risk | -0.07 | ||
| Omega ratioGain probability vs. loss probability | 1.25 | 1.16 | +0.08 |
| Calmar ratioReturn relative to maximum drawdown | 1.37 | 1.82 | -0.46 |
| Martin ratioReturn relative to average drawdown | 5.22 | 4.65 | +0.57 |
Loading charts...
Drawdowns
FSTZX vs. TDTF - Drawdown Comparison
The maximum FSTZX drawdown since its inception was -5.30%, smaller than the maximum TDTF drawdown of -12.02%. Use the drawdown chart below to compare losses from any high point for FSTZX and TDTF.
Loading charts...
Drawdown Indicators
| FSTZX | TDTF | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -5.30% | -12.02% | +6.72% |
Max Drawdown (1Y)Largest decline over 1 year | -1.59% | -1.58% | -0.01% |
Max Drawdown (3Y)Largest decline over 3 years | -1.59% | -3.40% | +1.81% |
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 | -1.39% | -1.12% | -0.27% |
Average DrawdownAverage peak-to-trough decline | -1.08% | -2.89% | +1.81% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.42% | 0.62% | -0.20% |
Volatility
FSTZX vs. TDTF - Volatility Comparison
Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund (FSTZX) has a higher volatility of 1.40% compared to FlexShares iBoxx 5-Year Target Duration TIPS Index Fund (TDTF) at 0.76%. This indicates that FSTZX'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.
Loading charts...
Volatility by Period
| FSTZX | TDTF | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.40% | 0.76% | +0.64% |
Volatility (6M)Calculated over the trailing 6-month period | 1.83% | 2.28% | -0.45% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.13% | 3.09% | -0.96% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.83% | 5.67% | -2.84% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.83% | 5.07% | -2.24% |
FSTZX vs. TDTF - Expense Ratio Comparison
FSTZX has a 0.00% 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
FSTZX vs. TDTF - Dividend Comparison
FSTZX's dividend yield for the trailing twelve months is around 2.87%, less than TDTF's 5.36% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSTZX Fidelity Series 0-5 Year Inflation-Protected Bond Index Fund | 2.87% | 4.02% | 2.78% | 2.54% | 5.25% | 0.82% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | 5.02% | 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
FSTZX and TDTF have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
FSTZX has higher volatility (1.40%) compared to TDTF (0.76%). In terms of maximum drawdown, FSTZX dropped -5.30% vs TDTF's -12.02%.
FSTZX currently has the higher Sharpe Ratio (1.02 vs 0.93), 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 FSTZX and TDTF
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