FIBUX vs. FYBTX
FIBUX (Fidelity Flex U.S. Bond Index Fund) and FYBTX (Fidelity Series Short-Term Credit Fund) are both Total Bond Market funds from Fidelity. Over the past 5 years, FIBUX returned -0.24%/yr vs 2.76%/yr for FYBTX. A 0.73 correlation means they provide meaningful diversification when combined. Both charge a 0.00% expense ratio.
Performance
FIBUX vs. FYBTX - Performance Comparison
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Returns By Period
In the year-to-date period, FIBUX achieves a 0.14% return, which is significantly lower than FYBTX's 1.07% return.
FIBUX
- 1D
- 0.00%
- 1M
- -0.21%
- 6M
- 0.03%
- YTD
- 0.14%
- 1Y
- 4.14%
- 3Y*
- 4.23%
- 5Y*
- -0.24%
- 10Y*
- —
FYBTX
- 1D
- -0.10%
- 1M
- 0.16%
- 6M
- 1.07%
- YTD
- 1.07%
- 1Y
- 3.98%
- 3Y*
- 5.31%
- 5Y*
- 2.76%
- 10Y*
- 2.56%
FIBUX vs. FYBTX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FIBUX Fidelity Flex U.S. Bond Index Fund | 0.14% | 7.20% | 1.31% | 5.46% | -13.41% | -2.16% | 7.08% | 8.58% | 0.12% | 3.81% |
FYBTX Fidelity Series Short-Term Credit Fund | 1.07% | 5.72% | 5.13% | 6.08% | -3.50% | -0.54% | 3.99% | 5.07% | 1.66% | 1.31% |
Correlation
The correlation between FIBUX and FYBTX is 0.75, 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 | 0.75 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.79 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.79 |
Correlation (All Time) Calculated using the full available price history since Mar 9, 2017 | 0.73 |
The correlation between FIBUX and FYBTX has been stable across timeframes, ranging from 0.73 to 0.79 - a consistent structural relationship.
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Return for Risk
FIBUX vs. FYBTX — Risk / Return Rank
FIBUX
FYBTX
FIBUX vs. FYBTX - 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 Series Short-Term Credit Fund (FYBTX). 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 | FYBTX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.13 | ||
| Sortino ratioReturn per unit of downside risk | -2.51 | ||
| Omega ratioGain probability vs. loss probability | 1.17 | 1.54 | -0.37 |
| Calmar ratioReturn relative to maximum drawdown | 1.25 | 3.28 | -2.03 |
| Martin ratioReturn relative to average drawdown | 3.40 | 13.14 | -9.74 |
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Drawdowns
FIBUX vs. FYBTX - Drawdown Comparison
The maximum FIBUX drawdown since its inception was -19.76%, which is greater than FYBTX's maximum drawdown of -6.00%. Use the drawdown chart below to compare losses from any high point for FIBUX and FYBTX.
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Drawdown Indicators
| FIBUX | FYBTX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.76% | -6.00% | -13.76% |
Max Drawdown (1Y)Largest decline over 1 year | -2.97% | -1.19% | -1.78% |
Max Drawdown (3Y)Largest decline over 3 years | -6.09% | -1.19% | -4.90% |
Max Drawdown (5Y)Largest decline over 5 years | -18.40% | -6.00% | -12.40% |
Max Drawdown (10Y)Largest decline over 10 years | — | -6.00% | — |
Current DrawdownCurrent decline from peak | -3.74% | -0.20% | -3.54% |
Average DrawdownAverage peak-to-trough decline | -5.77% | -0.71% | -5.06% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.09% | 0.30% | +0.79% |
Volatility
FIBUX vs. FYBTX - Volatility Comparison
Fidelity Flex U.S. Bond Index Fund (FIBUX) has a higher volatility of 1.05% compared to Fidelity Series Short-Term Credit Fund (FYBTX) at 0.47%. This indicates that FIBUX's price experiences larger fluctuations and is considered to be riskier than FYBTX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FIBUX | FYBTX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.05% | 0.47% | +0.58% |
Volatility (6M)Calculated over the trailing 6-month period | 2.95% | 1.37% | +1.58% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.90% | 1.87% | +2.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.04% | 2.20% | +3.84% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.10% | 1.92% | +3.18% |
FIBUX vs. FYBTX - Expense Ratio Comparison
FIBUX has a 0.00% expense ratio, which is lower than FYBTX's 0.00% 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
FIBUX vs. FYBTX - Dividend Comparison
FIBUX's dividend yield for the trailing twelve months is around 4.12%, less than FYBTX's 4.74% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
FIBUX Fidelity Flex U.S. Bond Index Fund | 4.12% | 3.95% | 3.65% | 2.93% | 1.62% | 1.18% | 2.32% | 2.96% | 2.70% | 2.45% | 0.00% |
FYBTX Fidelity Series Short-Term Credit Fund | 4.74% | 4.66% | 3.67% | 2.76% | 1.26% | 1.65% | 2.31% | 2.72% | 2.45% | 1.59% | 1.24% |
Frequently Asked Questions
FIBUX and FYBTX have a correlation of 0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
FIBUX has higher volatility (1.05%) compared to FYBTX (0.47%). In terms of maximum drawdown, FIBUX dropped -19.76% vs FYBTX's -6.00%.
FYBTX currently has the higher Sharpe Ratio (2.09 vs 0.95), 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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