FIFZX vs. BNDX
FIFZX (Fidelity Series Bond Index Fund) and BNDX (Vanguard Total International Bond ETF) are both funds - FIFZX is a Total Bond Market fund managed by Fidelity, while BNDX is a Global Bonds fund tracking the Bloomberg Global Aggregate ex-USD Float Adjusted RIC Capped Index (USD Hedged). Over the past 5 years, FIFZX returned 0.10%/yr vs 0.33%/yr for BNDX. A 0.77 correlation means they provide meaningful diversification when combined. FIFZX charges 0.00%/yr vs 0.07%/yr for BNDX.
Performance
FIFZX vs. BNDX - Performance Comparison
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Returns By Period
In the year-to-date period, FIFZX achieves a 0.45% return, which is significantly lower than BNDX's 0.54% return.
FIFZX
- 1D
- 0.00%
- 1M
- 0.46%
- YTD
- 0.45%
- 6M
- 0.35%
- 1Y
- 5.45%
- 3Y*
- 4.06%
- 5Y*
- 0.10%
- 10Y*
- —
BNDX
- 1D
- -0.35%
- 1M
- 0.63%
- YTD
- 0.54%
- 6M
- 0.23%
- 1Y
- 1.82%
- 3Y*
- 4.03%
- 5Y*
- 0.33%
- 10Y*
- 1.68%
FIFZX vs. BNDX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
FIFZX Fidelity Series Bond Index Fund | 0.45% | 7.15% | 1.41% | 5.54% | -13.46% | -1.96% | 7.65% | 5.12% |
BNDX Vanguard Total International Bond ETF | 0.54% | 2.86% | 3.57% | 8.77% | -12.76% | -2.29% | 4.65% | 4.62% |
Correlation
The correlation between FIFZX and BNDX is 0.74, 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 | 0.74 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.79 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.80 |
Correlation (All Time) Calculated using the full available price history since Apr 29, 2019 | 0.77 |
The correlation between FIFZX and BNDX has been stable across timeframes, ranging from 0.74 to 0.80 - a consistent structural relationship.
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Return for Risk
FIFZX vs. BNDX — Risk / Return Rank
FIFZX
BNDX
FIFZX vs. BNDX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity Series Bond Index Fund (FIFZX) and Vanguard Total International Bond ETF (BNDX). 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.
| FIFZX | BNDX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.81 | ||
| Sortino ratioReturn per unit of downside risk | +1.28 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 1.10 | +0.14 |
| Calmar ratioReturn relative to maximum drawdown | 1.84 | 0.62 | +1.22 |
| Martin ratioReturn relative to average drawdown | 5.52 | 1.78 | +3.74 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| FIFZX | BNDX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.35 | 0.53 | +0.81 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.02 | 0.07 | -0.05 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.41 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.26 | 0.61 | -0.35 |
Drawdowns
FIFZX vs. BNDX - Drawdown Comparison
The maximum FIFZX drawdown since its inception was -19.27%, which is greater than BNDX's maximum drawdown of -16.23%. Use the drawdown chart below to compare losses from any high point for FIFZX and BNDX.
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Drawdown Indicators
| FIFZX | BNDX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.27% | -16.23% | -3.04% |
Max Drawdown (1Y)Largest decline over 1 year | -2.91% | -2.93% | +0.02% |
Max Drawdown (3Y)Largest decline over 3 years | -6.12% | -2.93% | -3.19% |
Max Drawdown (5Y)Largest decline over 5 years | -18.47% | -15.86% | -2.61% |
Max Drawdown (10Y)Largest decline over 10 years | — | -16.23% | — |
Current DrawdownCurrent decline from peak | -2.75% | -1.49% | -1.26% |
Average DrawdownAverage peak-to-trough decline | -6.70% | -3.09% | -3.61% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.97% | 1.02% | -0.05% |
Volatility
FIFZX vs. BNDX - Volatility Comparison
The current volatility for Fidelity Series Bond Index Fund (FIFZX) is 1.39%, while Vanguard Total International Bond ETF (BNDX) has a volatility of 1.57%. This indicates that FIFZX experiences smaller price fluctuations and is considered to be less risky than BNDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FIFZX | BNDX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.39% | 1.57% | -0.18% |
Volatility (6M)Calculated over the trailing 6-month period | 2.84% | 2.91% | -0.07% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.99% | 3.43% | +0.56% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.08% | 4.88% | +1.20% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.63% | 4.09% | +1.54% |
FIFZX vs. BNDX - Expense Ratio Comparison
FIFZX has a 0.00% expense ratio, which is lower than BNDX's 0.07% 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
FIFZX vs. BNDX - Dividend Comparison
FIFZX's dividend yield for the trailing twelve months is around 4.00%, less than BNDX's 4.49% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BNDX Vanguard Total International Bond ETF | 4.49% | 4.39% | 4.18% | 4.42% | 1.51% | 3.74% | 1.11% | 3.40% | 3.01% | 2.23% | 1.89% | 1.63% |
FIFZX Fidelity Series Bond Index Fund | 4.00% | 3.87% | 3.66% | 3.09% | 1.74% | 1.42% | 3.20% | 1.64% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
FIFZX and BNDX have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
BNDX has higher volatility (1.57%) compared to FIFZX (1.39%). In terms of maximum drawdown, FIFZX dropped -19.27% vs BNDX's -16.23%.
FIFZX currently has the higher Sharpe Ratio (1.35 vs 0.53), 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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