FIBUX vs. FSPSX
Compare and contrast key facts about Fidelity Flex U.S. Bond Index Fund (FIBUX) and Fidelity International Index Fund (FSPSX).
FIBUX is managed by Fidelity. It was launched on Mar 9, 2017. FSPSX is a passively managed fund by Fidelity that tracks the performance of the MSCI ACWI ex USA IMI Index. It was launched on Nov 5, 1997.
Performance
FIBUX vs. FSPSX - Performance Comparison
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FIBUX vs. FSPSX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FIBUX Fidelity Flex U.S. Bond Index Fund | -0.45% | 7.20% | 1.31% | 5.46% | -13.41% | -2.16% | 7.08% | 8.58% | 0.12% | 3.81% |
FSPSX Fidelity International Index Fund | -1.94% | 31.98% | 3.70% | 18.31% | -14.23% | 11.45% | 8.16% | 22.03% | -13.55% | 19.68% |
Returns By Period
In the year-to-date period, FIBUX achieves a -0.45% return, which is significantly higher than FSPSX's -1.94% return.
FIBUX
- 1D
- 0.44%
- 1M
- -2.35%
- YTD
- -0.45%
- 6M
- 0.51%
- 1Y
- 3.75%
- 3Y*
- 3.43%
- 5Y*
- 0.09%
- 10Y*
- —
FSPSX
- 1D
- 0.42%
- 1M
- -10.86%
- YTD
- -1.94%
- 6M
- 2.58%
- 1Y
- 19.89%
- 3Y*
- 13.50%
- 5Y*
- 7.96%
- 10Y*
- 8.65%
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FIBUX vs. FSPSX - Expense Ratio Comparison
FIBUX has a 0.00% expense ratio, which is lower than FSPSX's 0.04% 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%.
Return for Risk
FIBUX vs. FSPSX — Risk / Return Rank
FIBUX
FSPSX
FIBUX vs. FSPSX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity Flex U.S. Bond Index Fund (FIBUX) and Fidelity International Index Fund (FSPSX). 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.
| FIBUX | FSPSX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.98 | 1.11 | -0.13 |
Sortino ratioReturn per unit of downside risk | 1.40 | 1.56 | -0.15 |
Omega ratioGain probability vs. loss probability | 1.17 | 1.23 | -0.05 |
Calmar ratioReturn relative to maximum drawdown | 1.72 | 1.54 | +0.18 |
Martin ratioReturn relative to average drawdown | 4.89 | 5.93 | -1.04 |
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
| FIBUX | FSPSX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.98 | 1.11 | -0.13 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.01 | 0.51 | -0.49 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.53 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.34 | 0.46 | -0.12 |
Correlation
The correlation between FIBUX and FSPSX is 0.06, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
FIBUX vs. FSPSX - Dividend Comparison
FIBUX's dividend yield for the trailing twelve months is around 3.70%, more than FSPSX's 3.22% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FIBUX Fidelity Flex U.S. Bond Index Fund | 3.70% | 3.95% | 3.65% | 2.93% | 1.62% | 1.18% | 2.32% | 2.96% | 2.70% | 2.45% | 0.00% | 0.00% |
FSPSX Fidelity International Index Fund | 3.22% | 3.15% | 3.27% | 2.79% | 2.66% | 3.07% | 1.84% | 3.18% | 2.79% | 2.50% | 3.08% | 2.79% |
Drawdowns
FIBUX vs. FSPSX - Drawdown Comparison
The maximum FIBUX drawdown since its inception was -19.76%, smaller than the maximum FSPSX drawdown of -33.69%. Use the drawdown chart below to compare losses from any high point for FIBUX and FSPSX.
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Drawdown Indicators
| FIBUX | FSPSX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.76% | -33.69% | +13.93% |
Max Drawdown (1Y)Largest decline over 1 year | -2.78% | -11.39% | +8.61% |
Max Drawdown (5Y)Largest decline over 5 years | -18.40% | -29.41% | +11.01% |
Max Drawdown (10Y)Largest decline over 10 years | — | -33.69% | — |
Current DrawdownCurrent decline from peak | -4.31% | -10.86% | +6.55% |
Average DrawdownAverage peak-to-trough decline | -5.83% | -6.59% | +0.76% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.98% | 2.96% | -1.98% |
Volatility
FIBUX vs. FSPSX - Volatility Comparison
The current volatility for Fidelity Flex U.S. Bond Index Fund (FIBUX) is 1.64%, while Fidelity International Index Fund (FSPSX) has a volatility of 7.04%. This indicates that FIBUX experiences smaller price fluctuations and is considered to be less risky than FSPSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FIBUX | FSPSX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.64% | 7.04% | -5.40% |
Volatility (6M)Calculated over the trailing 6-month period | 2.64% | 10.63% | -7.99% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.45% | 16.79% | -12.34% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.01% | 15.77% | -9.76% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.13% | 16.47% | -11.34% |