FIBUX vs. FBND
FIBUX (Fidelity Flex U.S. Bond Index Fund) and FBND (Fidelity Total Bond ETF) are both funds - FIBUX is a Total Bond Market fund managed by Fidelity, while FBND is a Intermediate Core-Plus Bond fund actively managed by Fidelity. Over the past 5 years, FIBUX returned -0.09%/yr vs 0.79%/yr for FBND. Their correlation of 0.88 suggests significant overlap in exposure. FIBUX charges 0.00%/yr vs 0.36%/yr for FBND.
Performance
FIBUX vs. FBND - Performance Comparison
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Returns By Period
In the year-to-date period, FIBUX achieves a 0.13% return, which is significantly lower than FBND's 0.72% return.
FIBUX
- 1D
- -0.33%
- 1M
- 0.57%
- YTD
- 0.13%
- 6M
- 0.47%
- 1Y
- 4.25%
- 3Y*
- 3.89%
- 5Y*
- -0.09%
- 10Y*
- —
FBND
- 1D
- 0.11%
- 1M
- 0.69%
- YTD
- 0.72%
- 6M
- 0.80%
- 1Y
- 4.71%
- 3Y*
- 4.73%
- 5Y*
- 0.79%
- 10Y*
- 2.54%
FIBUX vs. FBND - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FIBUX Fidelity Flex U.S. Bond Index Fund | 0.13% | 7.20% | 1.31% | 5.46% | -13.41% | -2.16% | 7.08% | 8.58% | 0.12% | 3.81% |
FBND Fidelity Total Bond ETF | 0.72% | 7.57% | 2.13% | 6.81% | -12.54% | -0.43% | 9.41% | 9.82% | -0.57% | 3.68% |
Correlation
The correlation between FIBUX and FBND is 0.91, 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 | 0.91 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.94 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.93 |
Correlation (All Time) Calculated using the full available price history since Mar 9, 2017 | 0.88 |
The correlation between FIBUX and FBND has been stable across timeframes, ranging from 0.88 to 0.94 - a consistent structural relationship.
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Return for Risk
FIBUX vs. FBND — Risk / Return Rank
FIBUX
FBND
FIBUX vs. FBND - 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 Total Bond ETF (FBND). 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.
| FIBUX | FBND | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.10 | ||
| Sortino ratioReturn per unit of downside risk | -0.15 | ||
| Omega ratioGain probability vs. loss probability | 1.20 | 1.21 | -0.01 |
| Calmar ratioReturn relative to maximum drawdown | 1.52 | 1.77 | -0.26 |
| Martin ratioReturn relative to average drawdown | 4.23 | 5.07 | -0.85 |
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Drawdowns
FIBUX vs. FBND - Drawdown Comparison
The maximum FIBUX drawdown since its inception was -19.76%, which is greater than FBND's maximum drawdown of -17.25%. Use the drawdown chart below to compare losses from any high point for FIBUX and FBND.
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Drawdown Indicators
| FIBUX | FBND | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.76% | -17.25% | -2.51% |
Max Drawdown (1Y)Largest decline over 1 year | -2.97% | -2.66% | -0.31% |
Max Drawdown (3Y)Largest decline over 3 years | -6.09% | -5.94% | -0.15% |
Max Drawdown (5Y)Largest decline over 5 years | -18.40% | -17.25% | -1.15% |
Max Drawdown (10Y)Largest decline over 10 years | — | -17.25% | — |
Current DrawdownCurrent decline from peak | -3.75% | -1.21% | -2.54% |
Average DrawdownAverage peak-to-trough decline | -5.78% | -3.34% | -2.44% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.06% | 0.93% | +0.13% |
Volatility
FIBUX vs. FBND - Volatility Comparison
Fidelity Flex U.S. Bond Index Fund (FIBUX) and Fidelity Total Bond ETF (FBND) have volatilities of 1.11% and 1.13%, 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
| FIBUX | FBND | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.11% | 1.13% | -0.02% |
Volatility (6M)Calculated over the trailing 6-month period | 2.90% | 2.84% | +0.06% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.97% | 3.83% | +0.14% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.04% | 5.93% | +0.11% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.11% | 6.10% | -0.99% |
FIBUX vs. FBND - Expense Ratio Comparison
FIBUX has a 0.00% expense ratio, which is lower than FBND's 0.36% expense ratio.
Dividends
FIBUX vs. FBND - Dividend Comparison
FIBUX's dividend yield for the trailing twelve months is around 4.09%, less than FBND's 4.69% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FBND Fidelity Total Bond ETF | 4.69% | 4.70% | 4.73% | 4.26% | 3.07% | 1.86% | 4.25% | 2.90% | 2.93% | 2.56% | 2.84% | 3.26% |
FIBUX Fidelity Flex U.S. Bond Index Fund | 4.09% | 3.95% | 3.65% | 2.93% | 1.62% | 1.18% | 2.32% | 2.96% | 2.70% | 2.45% | 0.00% | 0.00% |
Frequently Asked Questions
With a correlation of 0.91, FIBUX and FBND 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.
FBND has higher volatility (1.13%) compared to FIBUX (1.11%). In terms of maximum drawdown, FIBUX dropped -19.76% vs FBND's -17.25%.
FBND currently has the higher Sharpe Ratio (1.24 vs 1.14), 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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