| VSIAX | VSIIX | VSIAX / VSIIX | |
| Total Expense Ratio | 0.07 | 0.06 | 117% |
| Annual Report Gross Expense Ratio | 0.07 | 0.06 | 117% |
| Fund Existence | 14 years | 26 years | - |
| Gain YTD | 9.088 | 9.079 | 100% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 3000 | 5000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 59.6B | 59.6B | 100% |
| Annual Yield % from dividends | 1.97 | 1.98 | 100% |
| Returns for 1 year | 8.00 | 7.99 | 100% |
| Returns for 3 years | 37.34 | 37.36 | 100% |
| Returns for 5 years | 54.77 | 54.78 | 100% |
| Returns for 10 years | 124.66 | 124.75 | 100% |