FYBTX vs. VMBIX
Compare and contrast key facts about Fidelity Series Short-Term Credit Fund (FYBTX) and Vanguard Mortgage-Backed Securities Index Fund Institutional Shares (VMBIX).
FYBTX is managed by Fidelity. It was launched on Mar 27, 2015. VMBIX is managed by Vanguard. It was launched on Oct 31, 2013.
Performance
FYBTX vs. VMBIX - Performance Comparison
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FYBTX vs. VMBIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FYBTX Fidelity Series Short-Term Credit Fund | 0.00% | 5.72% | 5.13% | 6.08% | -3.50% | -0.54% | 3.99% | 5.07% | 1.66% | 1.50% |
VMBIX Vanguard Mortgage-Backed Securities Index Fund Institutional Shares | 0.17% | 8.44% | 1.78% | 4.97% | -11.56% | -1.30% | 3.77% | 6.19% | 0.88% | 2.38% |
Returns By Period
Over the past 10 years, FYBTX has outperformed VMBIX with an annualized return of 2.52%, while VMBIX has yielded a comparatively lower 1.39% annualized return.
FYBTX
- 1D
- 0.00%
- 1M
- -0.70%
- YTD
- 0.00%
- 6M
- 1.06%
- 1Y
- 3.99%
- 3Y*
- 5.06%
- 5Y*
- 2.62%
- 10Y*
- 2.52%
VMBIX
- 1D
- -0.28%
- 1M
- -1.32%
- YTD
- 0.17%
- 6M
- 1.35%
- 1Y
- 5.26%
- 3Y*
- 4.26%
- 5Y*
- 0.45%
- 10Y*
- 1.39%
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FYBTX vs. VMBIX - Expense Ratio Comparison
FYBTX has a 0.00% expense ratio, which is lower than VMBIX's 0.05% 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
FYBTX vs. VMBIX — Risk / Return Rank
FYBTX
VMBIX
FYBTX vs. VMBIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity Series Short-Term Credit Fund (FYBTX) and Vanguard Mortgage-Backed Securities Index Fund Institutional Shares (VMBIX). 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.
| FYBTX | VMBIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.93 | 1.19 | +0.74 |
Sortino ratioReturn per unit of downside risk | 3.46 | 1.72 | +1.74 |
Omega ratioGain probability vs. loss probability | 1.48 | 1.22 | +0.26 |
Calmar ratioReturn relative to maximum drawdown | 3.36 | 2.09 | +1.26 |
Martin ratioReturn relative to average drawdown | 11.94 | 5.86 | +6.07 |
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
| FYBTX | VMBIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.93 | 1.19 | +0.74 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 1.21 | 0.07 | +1.14 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 1.33 | 0.29 | +1.04 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.35 | 0.51 | +0.85 |
Correlation
The correlation between FYBTX and VMBIX is 0.65, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
FYBTX vs. VMBIX - Dividend Comparison
FYBTX's dividend yield for the trailing twelve months is around 4.34%, more than VMBIX's 3.89% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FYBTX Fidelity Series Short-Term Credit Fund | 4.34% | 4.66% | 3.67% | 2.76% | 1.26% | 1.65% | 2.31% | 2.72% | 2.45% | 1.59% | 1.24% | 0.00% |
VMBIX Vanguard Mortgage-Backed Securities Index Fund Institutional Shares | 3.89% | 4.20% | 4.27% | 3.29% | 2.33% | 1.01% | 2.02% | 2.76% | 2.74% | 2.18% | 2.13% | 2.04% |
Drawdowns
FYBTX vs. VMBIX - Drawdown Comparison
The maximum FYBTX drawdown since its inception was -6.00%, smaller than the maximum VMBIX drawdown of -17.44%. Use the drawdown chart below to compare losses from any high point for FYBTX and VMBIX.
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Drawdown Indicators
| FYBTX | VMBIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -6.00% | -17.44% | +11.44% |
Max Drawdown (1Y)Largest decline over 1 year | -1.19% | -2.58% | +1.39% |
Max Drawdown (5Y)Largest decline over 5 years | -6.00% | -17.11% | +11.11% |
Max Drawdown (10Y)Largest decline over 10 years | -6.00% | -17.44% | +11.44% |
Current DrawdownCurrent decline from peak | -0.89% | -1.83% | +0.94% |
Average DrawdownAverage peak-to-trough decline | -0.72% | -2.52% | +1.80% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.33% | 0.92% | -0.59% |
Volatility
FYBTX vs. VMBIX - Volatility Comparison
The current volatility for Fidelity Series Short-Term Credit Fund (FYBTX) is 0.53%, while Vanguard Mortgage-Backed Securities Index Fund Institutional Shares (VMBIX) has a volatility of 1.68%. This indicates that FYBTX experiences smaller price fluctuations and is considered to be less risky than VMBIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FYBTX | VMBIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.53% | 1.68% | -1.15% |
Volatility (6M)Calculated over the trailing 6-month period | 1.23% | 2.49% | -1.26% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.02% | 4.30% | -2.28% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.16% | 6.33% | -4.17% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.90% | 4.76% | -2.86% |