| VSIBX | VTIBX | VSIBX / VTIBX | |
| Total Expense Ratio | N/A | 0.13 | - |
| Annual Report Gross Expense Ratio | N/A | 0.13 | - |
| Fund Existence | N/A | 13 years | - |
| Gain YTD | 11.442 | 1.123 | 1,019% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | N/A | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | N/A | 122B | - |
| Annual Yield % from dividends | N/A | 4.18 | - |
| Returns for 1 year | N/A | 2.35 | - |
| Returns for 3 years | -88.74 | 13.49 | -658% |
| Returns for 5 years | -89.88 | 1.25 | -7,191% |
| Returns for 10 years | -88.18 | 17.23 | -512% |