VBISX vs. SIBPX
VBISX (Vanguard Short-Term Bond Index Fund) and SIBPX (Saratoga Investment Quality Bond Portfolio) are both Short-Term Bond funds. Over the past 5 years, VBISX returned 1.35%/yr vs 0.95%/yr for SIBPX. Their 0.76 correlation means they have sometimes moved together and sometimes differently. VBISX charges 0.15%/yr vs 1.54%/yr for SIBPX.
Performance
VBISX vs. SIBPX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, VBISX achieves a 0.10% return, which is significantly higher than SIBPX's -1.68% return.
VBISX
- 1D
- 0.10%
- 1M
- -0.29%
- 6M
- 0.06%
- YTD
- 0.10%
- 1Y
- 2.02%
- 3Y*
- 4.06%
- 5Y*
- 1.35%
- 10Y*
- 1.73%
- ALL TIME*
- 3.36%
SIBPX
- 1D
- 0.22%
- 1M
- -0.84%
- 6M
- -1.47%
- YTD
- -1.68%
- 1Y
- -0.19%
- 3Y*
- 2.69%
- 5Y*
- 0.95%
- 10Y*
- —
- ALL TIME*
- 1.12%
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 |
VBISX vs. SIBPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VBISX Vanguard Short-Term Bond Index Fund | 0.10% | 5.67% | 3.66% | 4.54% | -5.61% | -1.35% | 4.63% | 4.78% | 1.27% | 0.08% |
SIBPX Saratoga Investment Quality Bond Portfolio | -1.68% | 6.50% | 0.78% | 2.90% | -2.51% | -1.73% | 3.34% | 3.84% | -0.72% | -0.13% |
Correlation
The correlation between VBISX and SIBPX is 0.80, 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. | 0.80 |
Correlation (3Y) Balances recent behavior with more history. | 0.83 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.76 |
Correlation (All Time) Calculated using the full available price history since Jun 12, 2017 | 0.76 |
The correlation between VBISX and SIBPX has been stable across timeframes, ranging from 0.76 to 0.83 - 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
VBISX vs. SIBPX — Risk / Return Rank
VBISX
SIBPX
VBISX vs. SIBPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Short-Term Bond Index Fund (VBISX) and Saratoga Investment Quality Bond Portfolio (SIBPX). 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.
| VBISX | SIBPX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.97 | ||
| Sortino ratioReturn per unit of downside risk | +1.50 | ||
| Omega ratioGain probability vs. loss probability | 1.18 | 1.00 | +0.18 |
| Calmar ratioReturn relative to maximum drawdown | 1.31 | -0.03 | +1.34 |
| Martin ratioReturn relative to average drawdown | 3.58 | -0.06 | +3.64 |
Loading charts...
Drawdowns
VBISX vs. SIBPX - Drawdown Comparison
The maximum VBISX drawdown since its inception was -8.79%, which is greater than SIBPX's maximum drawdown of -5.57%. Use the drawdown chart below to compare losses from any high point for VBISX and SIBPX.
Loading charts...
Drawdown Indicators
| VBISX | SIBPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -8.79% | -5.57% | -3.22% |
Max Drawdown (1Y)Largest decline over 1 year | -1.54% | -3.30% | +1.76% |
Max Drawdown (3Y)Largest decline over 3 years | -1.55% | -4.28% | +2.73% |
Max Drawdown (5Y)Largest decline over 5 years | -8.54% | -4.64% | -3.90% |
Max Drawdown (10Y)Largest decline over 10 years | -8.79% | — | — |
Current DrawdownCurrent decline from peak | -0.82% | -3.00% | +2.18% |
Average DrawdownAverage peak-to-trough decline | -0.87% | -1.72% | +0.85% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.56% | 1.48% | -0.92% |
Volatility
VBISX vs. SIBPX - Volatility Comparison
The current volatility for Vanguard Short-Term Bond Index Fund (VBISX) is 0.48%, while Saratoga Investment Quality Bond Portfolio (SIBPX) has a volatility of 1.04%. This indicates that VBISX experiences smaller price fluctuations and is considered to be less risky than SIBPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| VBISX | SIBPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.48% | 1.04% | -0.56% |
Volatility (6M)Calculated over the trailing 6-month period | 1.66% | 2.92% | -1.26% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.14% | 3.71% | -1.57% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.96% | 3.44% | -0.48% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.39% | 2.77% | -0.38% |
VBISX vs. SIBPX - Expense Ratio Comparison
VBISX has a 0.15% expense ratio, which is lower than SIBPX's 1.54% expense ratio.
Dividends
VBISX vs. SIBPX - Dividend Comparison
VBISX's dividend yield for the trailing twelve months is around 3.60%, more than SIBPX's 2.18% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SIBPX Saratoga Investment Quality Bond Portfolio | 2.18% | 2.24% | 2.31% | 1.54% | 0.14% | 1.39% | 0.58% | 0.99% | 1.21% | 1.03% | 0.00% | 0.00% |
VBISX Vanguard Short-Term Bond Index Fund | 3.60% | 3.44% | 3.29% | 2.10% | 1.38% | 1.16% | 1.72% | 2.16% | 1.92% | 1.58% | 1.42% | 1.34% |
Frequently Asked Questions
VBISX and SIBPX have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SIBPX has higher volatility (1.04%) compared to VBISX (0.48%). In terms of maximum drawdown, VBISX dropped -8.79% vs SIBPX's -5.57%.
VBISX currently has the higher Sharpe Ratio (0.95 vs -0.02), 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 VBISX and SIBPX
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