FBLTX vs. VSBSX
FBLTX (Fidelity SAI Long-Term Treasury Bond Index Fund) and VSBSX (Vanguard Short-Term Treasury Index Fund Admiral Shares) are both Government Bonds funds. Over the past 10 years, FBLTX returned -2.52%/yr vs 1.75%/yr for VSBSX. Their 0.59 correlation means they have sometimes moved together and sometimes differently. FBLTX charges 0.03%/yr vs 0.06%/yr for VSBSX.
Performance
FBLTX vs. VSBSX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, FBLTX achieves a -3.37% return, which is significantly lower than VSBSX's 0.81% return. Over the past 10 years, FBLTX has underperformed VSBSX with an annualized return of -2.52%, while VSBSX has yielded a comparatively higher 1.75% annualized return.
FBLTX
- 1D
- -0.16%
- 1M
- -3.63%
- 6M
- -3.28%
- YTD
- -3.37%
- 1Y
- -2.17%
- 3Y*
- -2.29%
- 5Y*
- -8.31%
- 10Y*
- -2.52%
- ALL TIME*
- -1.05%
VSBSX
- 1D
- 0.05%
- 1M
- 0.15%
- 6M
- 0.61%
- YTD
- 0.81%
- 1Y
- 2.66%
- 3Y*
- 4.39%
- 5Y*
- 1.92%
- 10Y*
- 1.75%
- ALL TIME*
- 1.41%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
FBLTX vs. VSBSX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FBLTX Fidelity SAI Long-Term Treasury Bond Index Fund | -3.37% | 4.39% | -8.05% | 2.71% | -31.84% | -4.89% | 18.27% | 14.36% | -1.24% | 9.06% |
VSBSX Vanguard Short-Term Treasury Index Fund Admiral Shares | 0.81% | 5.08% | 4.39% | 4.23% | -3.87% | -0.69% | 3.09% | 3.51% | 1.52% | 0.35% |
Correlation
The correlation between FBLTX and VSBSX is 0.60, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.60 |
Correlation (3Y) Balances recent behavior with more history. | 0.61 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.61 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.59 |
Correlation (All Time) Calculated using the full available price history since Oct 16, 2015 | 0.59 |
The correlation between FBLTX and VSBSX has been stable across timeframes, ranging from 0.59 to 0.61 - a consistent structural relationship.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
FBLTX vs. VSBSX — Risk / Return Rank
FBLTX
VSBSX
FBLTX vs. VSBSX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI Long-Term Treasury Bond Index Fund (FBLTX) and Vanguard Short-Term Treasury Index Fund Admiral Shares (VSBSX). 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.
| FBLTX | VSBSX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.45 | ||
| Sortino ratioReturn per unit of downside risk | -3.83 | ||
| Omega ratioGain probability vs. loss probability | 1.00 | 1.50 | -0.50 |
| Calmar ratioReturn relative to maximum drawdown | -0.05 | 3.74 | -3.79 |
| Martin ratioReturn relative to average drawdown | -0.10 | 14.92 | -15.02 |
Loading charts...
Drawdowns
FBLTX vs. VSBSX - Drawdown Comparison
The maximum FBLTX drawdown since its inception was -49.06%, which is greater than VSBSX's maximum drawdown of -5.77%. Use the drawdown chart below to compare losses from any high point for FBLTX and VSBSX.
Loading charts...
Drawdown Indicators
| FBLTX | VSBSX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -49.06% | -5.77% | -43.29% |
Max Drawdown (1Y)Largest decline over 1 year | -7.66% | -0.84% | -6.82% |
Max Drawdown (3Y)Largest decline over 3 years | -14.75% | -0.84% | -13.91% |
Max Drawdown (5Y)Largest decline over 5 years | -44.19% | -5.72% | -38.47% |
Max Drawdown (10Y)Largest decline over 10 years | -49.06% | -5.77% | -43.29% |
Current DrawdownCurrent decline from peak | -42.95% | 0.00% | -42.95% |
Average DrawdownAverage peak-to-trough decline | -21.28% | -0.59% | -20.69% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.54% | 0.21% | +3.33% |
Volatility
FBLTX vs. VSBSX - Volatility Comparison
Fidelity SAI Long-Term Treasury Bond Index Fund (FBLTX) has a higher volatility of 2.48% compared to Vanguard Short-Term Treasury Index Fund Admiral Shares (VSBSX) at 0.36%. This indicates that FBLTX's price experiences larger fluctuations and is considered to be riskier than VSBSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| FBLTX | VSBSX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.48% | 0.36% | +2.12% |
Volatility (6M)Calculated over the trailing 6-month period | 6.79% | 0.99% | +5.80% |
Volatility (1Y)Calculated over the trailing 1-year period | 9.26% | 1.30% | +7.96% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 15.57% | 1.96% | +13.61% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 14.51% | 1.54% | +12.97% |
FBLTX vs. VSBSX - Expense Ratio Comparison
FBLTX has a 0.03% expense ratio, which is lower than VSBSX's 0.06% 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
FBLTX vs. VSBSX - Dividend Comparison
FBLTX's dividend yield for the trailing twelve months is around 3.97%, more than VSBSX's 3.47% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FBLTX Fidelity SAI Long-Term Treasury Bond Index Fund | 3.97% | 4.04% | 3.60% | 3.29% | 2.25% | 1.81% | 6.73% | 2.39% | 2.87% | 2.68% | 3.70% | 0.39% |
VSBSX Vanguard Short-Term Treasury Index Fund Admiral Shares | 3.47% | 3.98% | 4.50% | 3.29% | 1.12% | 0.63% | 1.72% | 2.26% | 1.80% | 1.10% | 0.76% | 0.71% |
Frequently Asked Questions
FBLTX and VSBSX have a correlation of 0.60, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
FBLTX has higher volatility (2.48%) compared to VSBSX (0.36%). In terms of maximum drawdown, FBLTX dropped -49.06% vs VSBSX's -5.77%.
VSBSX currently has the higher Sharpe Ratio (2.41 vs -0.04), 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.
Find the right allocation for FBLTX and VSBSX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer