VISTX Performance — Vanguard Institutional Short-Term Bond Fund, Institutional Plus Shares
Data updated: 2026-08-28
VISTX returned +1.04% year to date and +3.66% over one year to Jun 2026. Annualised returns are +5.16% over 3 years and +2.48% over 5 years. The fund trailed its Short-Term Core Bond category average: $100 invested three years ago grew to $116, against $118 for the category, and to $104 over one year, against $104. Volatility over the past three years was 1.54% a year. In the 12 months to Jun 2026 the fund took in a net $771.4M, and assets reached $6.74B.
VISTX Growth of $100
What $100 invested in Vanguard Institutional Short-Term Bond Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Short-Term Core Bond category average over the same months.
| Period | VISTX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $104 | $104 |
| 3 years (Jul 2023 – Jun 2026) | $116 | $118 |
| 5 years (Jul 2021 – Jun 2026) | $113 | $113 |
| Since data start (Jul 2019 – Jun 2026) | $119 | $122 |
VISTX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +1.04% |
| 1 year | +3.66% |
| 3 years (annualised) | +5.16% |
| 5 years (annualised) | +2.48% |
VISTX Annual Returns
Calendar-year total returns of Vanguard Institutional Short-Term Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +1.04% |
| 2025 | +5.67% |
| 2024 | +5.09% |
| 2023 | +4.98% |
| 2022 | −3.65% |
| 2021 | −0.18% |
| 2020 | +3.92% |
| 2019 (Jul–Dec) | +1.38% |
VISTX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +0.3% | +0.6% | −0.6% | +0.4% | +0.2% | +0.1% | — | — | — | — | — | — |
| 2025 | +0.5% | +0.7% | +0.3% | +0.7% | 0.0% | +0.8% | 0.0% | +1.0% | +0.4% | +0.3% | +0.5% | +0.4% |
| 2024 | +0.5% | −0.2% | +0.5% | −0.2% | +0.7% | +0.6% | +1.2% | +0.9% | +0.8% | −0.4% | +0.5% | +0.2% |
| 2023 | +0.9% | −0.7% | +1.3% | +0.4% | −0.2% | −0.4% | +0.6% | +0.3% | −0.1% | +0.2% | +1.3% | +1.3% |
| 2022 | −0.7% | −0.5% | −1.2% | −0.6% | +0.5% | −0.6% | +0.5% | −0.7% | −1.1% | −0.3% | +0.8% | +0.4% |
| 2021 | +0.1% | 0.0% | −0.1% | +0.2% | +0.2% | −0.1% | +0.2% | 0.0% | −0.1% | −0.4% | −0.1% | −0.1% |
| 2020 | +0.6% | +0.7% | −1.2% | +1.3% | +0.9% | +0.7% | +0.3% | +0.2% | +0.1% | +0.1% | +0.1% | +0.2% |
| 2019 | — | — | — | — | — | — | +0.1% | +0.7% | 0.0% | +0.2% | +0.1% | +0.2% |
VISTX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 1.54%
- 3-year Sharpe ratio: 0.43 (vs 4.5% risk-free rate)
- Best month: +1.34% (Dec 2023)
- Worst month: −0.56% (Mar 2026)
VISTX Fund Flows
Monthly money in and out of Vanguard Institutional Short-Term Bond Fund, from SEC Form N-PORT.
- 12-month net flow: $771.4M
- 12-month gross sales (incl. reinvestments): $1.2B
- Sales ÷ redemptions: 2.83×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $98.9M | $153.4M | −$54.5M |
| May 2026 | $55.2M | $16.2M | $39.0M |
| Apr 2026 | $114.3M | $728K | $113.6M |
| Mar 2026 | $22.9M | $3.1M | $19.9M |
| Feb 2026 | $24.8M | $44.1M | −$19.3M |
| Jan 2026 | $614.7M | $173.8M | $440.9M |
| Dec 2025 | $45.8M | $1.9M | $43.9M |
| Nov 2025 | $25.8M | $2.4M | $23.4M |
| Oct 2025 | $99.5M | $4.6M | $94.9M |
| Sep 2025 | $42.7M | $18.9M | $23.7M |
| Aug 2025 | $23.4M | $2.3M | $21.1M |
| Jul 2025 | $25.6M | $825K | $24.8M |
VISTX Assets Under Management
Net assets of Vanguard Institutional Short-Term Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $6.74B |
| 2026-03-31 | $6.67B |
| 2025-12-31 | $6.25B |
| 2025-09-30 | $6.09B |
| 2025-06-30 | $6.00B |
| 2025-03-31 | $5.78B |
| 2024-12-31 | $5.71B |
| 2024-09-30 | $5.85B |
| 2024-06-30 | $5.79B |
| 2024-03-31 | $5.99B |
| 2023-12-31 | $6.97B |
| 2023-09-30 | $8.13B |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.