TSIDX vs. VISTX
TSIDX (T. Rowe Price Short Duration Income Fund I Class) and VISTX (Vanguard Institutional Short-Term Bond Fund) are both Short-Term Bond funds. Over the past 5 years, TSIDX returned 2.40%/yr vs 2.57%/yr for VISTX. Their 0.75 correlation means they have sometimes moved together and sometimes differently. TSIDX charges 0.29%/yr vs 0.02%/yr for VISTX.
Performance
TSIDX vs. VISTX - Performance Comparison
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Returns By Period
In the year-to-date period, TSIDX achieves a 0.63% return, which is significantly lower than VISTX's 1.26% return.
TSIDX
- 1D
- 0.00%
- 1M
- -0.21%
- 6M
- 0.33%
- YTD
- 0.63%
- 1Y
- 3.04%
- 3Y*
- 5.41%
- 5Y*
- 2.40%
- 10Y*
- —
- ALL TIME*
- 2.36%
VISTX
- 1D
- 0.08%
- 1M
- 0.15%
- 6M
- 0.96%
- YTD
- 1.26%
- 1Y
- 3.40%
- 3Y*
- 5.17%
- 5Y*
- 2.57%
- 10Y*
- 2.45%
- ALL TIME*
- 2.49%
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 |
TSIDX vs. VISTX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | |
|---|---|---|---|---|---|---|---|
TSIDX T. Rowe Price Short Duration Income Fund I Class | 0.63% | 6.58% | 5.87% | 5.42% | -5.61% | 0.74% | 0.20% |
VISTX Vanguard Institutional Short-Term Bond Fund | 1.26% | 5.68% | 5.56% | 4.98% | -3.73% | -0.04% | 0.12% |
Correlation
The correlation between TSIDX and VISTX is 0.67, 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. | 0.67 |
Correlation (3Y) Balances recent behavior with more history. | 0.70 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.76 |
Correlation (All Time) Calculated using the full available price history since Dec 9, 2020 | 0.75 |
The correlation between TSIDX and VISTX has been stable across timeframes, ranging from 0.67 to 0.76 - a consistent structural relationship.
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Return for Risk
TSIDX vs. VISTX — Risk / Return Rank
TSIDX
VISTX
TSIDX vs. VISTX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price Short Duration Income Fund I Class (TSIDX) and Vanguard Institutional Short-Term Bond Fund (VISTX). 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.
| TSIDX | VISTX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.95 | ||
| Sortino ratioReturn per unit of downside risk | -1.04 | ||
| Omega ratioGain probability vs. loss probability | 1.49 | 1.66 | -0.17 |
| Calmar ratioReturn relative to maximum drawdown | 2.85 | 4.53 | -1.68 |
| Martin ratioReturn relative to average drawdown | 12.83 | 18.73 | -5.90 |
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Drawdowns
TSIDX vs. VISTX - Drawdown Comparison
The maximum TSIDX drawdown since its inception was -7.87%, which is greater than VISTX's maximum drawdown of -5.64%. Use the drawdown chart below to compare losses from any high point for TSIDX and VISTX.
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Drawdown Indicators
| TSIDX | VISTX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -7.87% | -5.64% | -2.23% |
Max Drawdown (1Y)Largest decline over 1 year | -1.26% | -0.86% | -0.40% |
Max Drawdown (3Y)Largest decline over 3 years | -1.26% | -0.86% | -0.40% |
Max Drawdown (5Y)Largest decline over 5 years | -7.87% | -5.64% | -2.23% |
Max Drawdown (10Y)Largest decline over 10 years | — | -5.64% | — |
Current DrawdownCurrent decline from peak | -0.32% | 0.00% | -0.32% |
Average DrawdownAverage peak-to-trough decline | -1.76% | -0.68% | -1.08% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.28% | 0.21% | +0.07% |
Volatility
TSIDX vs. VISTX - Volatility Comparison
T. Rowe Price Short Duration Income Fund I Class (TSIDX) has a higher volatility of 0.42% compared to Vanguard Institutional Short-Term Bond Fund (VISTX) at 0.37%. This indicates that TSIDX's price experiences larger fluctuations and is considered to be riskier than VISTX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TSIDX | VISTX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.42% | 0.37% | +0.05% |
Volatility (6M)Calculated over the trailing 6-month period | 1.30% | 1.00% | +0.30% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.85% | 1.34% | +0.51% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.27% | 1.88% | +0.39% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.15% | 1.48% | +0.67% |
TSIDX vs. VISTX - Expense Ratio Comparison
TSIDX has a 0.29% expense ratio, which is higher than VISTX's 0.02% expense ratio.
Dividends
TSIDX vs. VISTX - Dividend Comparison
TSIDX's dividend yield for the trailing twelve months is around 3.97%, less than VISTX's 4.05% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
TSIDX T. Rowe Price Short Duration Income Fund I Class | 3.97% | 4.96% | 5.14% | 3.61% | 1.90% | 1.66% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
VISTX Vanguard Institutional Short-Term Bond Fund | 4.05% | 4.53% | 5.03% | 3.91% | 1.76% | 1.85% | 2.33% | 2.72% | 2.32% | 1.78% | 1.51% |
Frequently Asked Questions
TSIDX and VISTX have a correlation of 0.67, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
TSIDX has higher volatility (0.42%) compared to VISTX (0.37%). In terms of maximum drawdown, TSIDX dropped -7.87% vs VISTX's -5.64%.
VISTX currently has the higher Sharpe Ratio (2.93 vs 1.98), 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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