FBLTX vs. VBLAX
Compare and contrast key facts about Fidelity SAI Long-Term Treasury Bond Index Fund (FBLTX) and Vanguard Long-Term Bond Index Fund Admiral Shares (VBLAX).
FBLTX is managed by Fidelity. It was launched on Oct 8, 2015. VBLAX is managed by Vanguard. It was launched on Feb 7, 2019.
Performance
FBLTX vs. VBLAX - Performance Comparison
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FBLTX vs. VBLAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
FBLTX Fidelity SAI Long-Term Treasury Bond Index Fund | -0.10% | 4.39% | -8.05% | 2.71% | -31.84% | -4.89% | 18.27% | 13.73% |
VBLAX Vanguard Long-Term Bond Index Fund Admiral Shares | -1.15% | 6.57% | -4.14% | 7.55% | -27.22% | -3.36% | 15.75% | 16.45% |
Returns By Period
In the year-to-date period, FBLTX achieves a -0.10% return, which is significantly higher than VBLAX's -1.15% return.
FBLTX
- 1D
- 1.37%
- 1M
- -4.30%
- YTD
- -0.10%
- 6M
- -1.00%
- 1Y
- -0.57%
- 3Y*
- -2.77%
- 5Y*
- -5.77%
- 10Y*
- -1.45%
VBLAX
- 1D
- 1.07%
- 1M
- -4.25%
- YTD
- -1.15%
- 6M
- -1.40%
- 1Y
- 1.61%
- 3Y*
- 0.74%
- 5Y*
- -2.98%
- 10Y*
- —
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FBLTX vs. VBLAX - Expense Ratio Comparison
FBLTX has a 0.03% expense ratio, which is lower than VBLAX's 0.07% 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
FBLTX vs. VBLAX — Risk / Return Rank
FBLTX
VBLAX
FBLTX vs. VBLAX - 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 Long-Term Bond Index Fund Admiral Shares (VBLAX). 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.
| FBLTX | VBLAX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.07 | 0.27 | -0.21 |
Sortino ratioReturn per unit of downside risk | 0.17 | 0.43 | -0.26 |
Omega ratioGain probability vs. loss probability | 1.02 | 1.05 | -0.03 |
Calmar ratioReturn relative to maximum drawdown | 0.19 | 0.53 | -0.34 |
Martin ratioReturn relative to average drawdown | 0.41 | 1.30 | -0.90 |
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
| FBLTX | VBLAX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.07 | 0.27 | -0.21 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.37 | -0.23 | -0.14 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | -0.10 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.05 | 0.03 | -0.09 |
Correlation
The correlation between FBLTX and VBLAX is 0.97, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
FBLTX vs. VBLAX - Dividend Comparison
FBLTX's dividend yield for the trailing twelve months is around 3.74%, less than VBLAX's 4.34% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FBLTX Fidelity SAI Long-Term Treasury Bond Index Fund | 3.74% | 4.04% | 3.60% | 3.29% | 2.25% | 1.81% | 6.73% | 2.39% | 2.87% | 2.68% | 3.70% | 0.39% |
VBLAX Vanguard Long-Term Bond Index Fund Admiral Shares | 4.34% | 4.64% | 4.61% | 4.08% | 4.13% | 2.62% | 5.39% | 3.25% | 0.00% | 0.00% | 0.00% | 0.00% |
Drawdowns
FBLTX vs. VBLAX - Drawdown Comparison
The maximum FBLTX drawdown since its inception was -49.06%, which is greater than VBLAX's maximum drawdown of -38.62%. Use the drawdown chart below to compare losses from any high point for FBLTX and VBLAX.
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Drawdown Indicators
| FBLTX | VBLAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -49.06% | -38.62% | -10.44% |
Max Drawdown (1Y)Largest decline over 1 year | -9.51% | -6.87% | -2.64% |
Max Drawdown (5Y)Largest decline over 5 years | -44.19% | -36.32% | -7.87% |
Max Drawdown (10Y)Largest decline over 10 years | -49.06% | — | — |
Current DrawdownCurrent decline from peak | -41.02% | -25.71% | -15.31% |
Average DrawdownAverage peak-to-trough decline | -20.65% | -17.93% | -2.72% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.47% | 2.81% | +1.66% |
Volatility
FBLTX vs. VBLAX - Volatility Comparison
Fidelity SAI Long-Term Treasury Bond Index Fund (FBLTX) has a higher volatility of 3.80% compared to Vanguard Long-Term Bond Index Fund Admiral Shares (VBLAX) at 3.34%. This indicates that FBLTX's price experiences larger fluctuations and is considered to be riskier than VBLAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FBLTX | VBLAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 3.80% | 3.34% | +0.46% |
Volatility (6M)Calculated over the trailing 6-month period | 6.63% | 5.47% | +1.16% |
Volatility (1Y)Calculated over the trailing 1-year period | 11.51% | 9.52% | +1.99% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 15.72% | 12.89% | +2.83% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 14.62% | 12.74% | +1.88% |