GBIAX vs. TDTF
GBIAX (Nationwide Bond Index Fund) and TDTF (FlexShares iBoxx 5-Year Target Duration TIPS Index Fund) are both funds - GBIAX is a Intermediate Core Bond fund managed by Nationwide, while TDTF is a Inflation-Protected Bonds fund tracking the iBoxx 5-Year Target Duration TIPS. Over the past 10 years, GBIAX returned 0.79%/yr vs 2.79%/yr for TDTF. A 0.69 correlation means they provide meaningful diversification when combined. GBIAX charges 0.64%/yr vs 0.18%/yr for TDTF.
Performance
GBIAX vs. TDTF - Performance Comparison
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Returns By Period
In the year-to-date period, GBIAX achieves a -0.18% return, which is significantly lower than TDTF's 0.63% return. Over the past 10 years, GBIAX has underperformed TDTF with an annualized return of 0.79%, while TDTF has yielded a comparatively higher 2.79% annualized return.
GBIAX
- 1D
- -0.31%
- 1M
- 0.50%
- YTD
- -0.18%
- 6M
- 0.09%
- 1Y
- 3.53%
- 3Y*
- 3.23%
- 5Y*
- -0.73%
- 10Y*
- 0.79%
TDTF
- 1D
- 0.02%
- 1M
- -0.50%
- YTD
- 0.63%
- 6M
- 0.78%
- 1Y
- 3.39%
- 3Y*
- 4.25%
- 5Y*
- 1.63%
- 10Y*
- 2.79%
GBIAX vs. TDTF - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
GBIAX Nationwide Bond Index Fund | -0.18% | 6.54% | 0.44% | 5.03% | -14.06% | -2.38% | 6.60% | 8.08% | -0.74% | 2.89% |
TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | 0.63% | 7.83% | 2.40% | 4.10% | -9.73% | 5.54% | 9.98% | 7.99% | -0.82% | 1.93% |
Correlation
The correlation between GBIAX and TDTF is 0.73, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.73 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.81 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.75 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.71 |
Correlation (All Time) Calculated using the full available price history since Sep 22, 2011 | 0.69 |
The correlation between GBIAX and TDTF shifts across timeframes, from 0.69 (all time) to 0.81 (3 years), reflecting how their relationship changes across market environments.
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Return for Risk
GBIAX vs. TDTF — Risk / Return Rank
GBIAX
TDTF
GBIAX vs. TDTF - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Nationwide Bond Index Fund (GBIAX) 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.
| GBIAX | TDTF | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.12 | ||
| Sortino ratioReturn per unit of downside risk | -0.17 | ||
| Omega ratioGain probability vs. loss probability | 1.17 | 1.20 | -0.03 |
| Calmar ratioReturn relative to maximum drawdown | 1.25 | 2.15 | -0.89 |
| Martin ratioReturn relative to average drawdown | 3.46 | 6.48 | -3.02 |
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Drawdowns
GBIAX vs. TDTF - Drawdown Comparison
The maximum GBIAX drawdown since its inception was -20.26%, which is greater than TDTF's maximum drawdown of -12.02%. Use the drawdown chart below to compare losses from any high point for GBIAX and TDTF.
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Drawdown Indicators
| GBIAX | TDTF | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -20.26% | -12.02% | -8.24% |
Max Drawdown (1Y)Largest decline over 1 year | -3.00% | -1.58% | -1.42% |
Max Drawdown (3Y)Largest decline over 3 years | -6.30% | -3.79% | -2.51% |
Max Drawdown (5Y)Largest decline over 5 years | -19.07% | -12.02% | -7.05% |
Max Drawdown (10Y)Largest decline over 10 years | -20.26% | -12.02% | -8.24% |
Current DrawdownCurrent decline from peak | -6.57% | -1.44% | -5.13% |
Average DrawdownAverage peak-to-trough decline | -3.05% | -2.90% | -0.15% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.09% | 0.52% | +0.57% |
Volatility
GBIAX vs. TDTF - Volatility Comparison
Nationwide Bond Index Fund (GBIAX) and FlexShares iBoxx 5-Year Target Duration TIPS Index Fund (TDTF) have volatilities of 1.25% and 1.22%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| GBIAX | TDTF | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.25% | 1.22% | +0.03% |
Volatility (6M)Calculated over the trailing 6-month period | 2.89% | 2.22% | +0.67% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.90% | 3.13% | +0.77% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.01% | 5.68% | +0.33% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.96% | 5.08% | -0.12% |
GBIAX vs. TDTF - Expense Ratio Comparison
GBIAX has a 0.64% expense ratio, which is higher than TDTF's 0.18% expense ratio.
Dividends
GBIAX vs. TDTF - Dividend Comparison
GBIAX's dividend yield for the trailing twelve months is around 3.30%, less than TDTF's 4.75% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
GBIAX Nationwide Bond Index Fund | 3.30% | 3.18% | 3.07% | 2.57% | 1.59% | 3.02% | 1.79% | 2.27% | 2.29% | 1.93% | 2.15% | 2.43% |
TDTF FlexShares iBoxx 5-Year Target Duration TIPS Index Fund | 4.75% | 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
GBIAX 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.
GBIAX has higher volatility (1.25%) compared to TDTF (1.22%). In terms of maximum drawdown, GBIAX dropped -20.26% vs TDTF's -12.02%.
TDTF currently has the higher Sharpe Ratio (1.09 vs 0.97), 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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