| SPIDX | VFINX | SPIDX / VFINX | |
| Total Expense Ratio | 0.29 | 0.14 | 207% |
| Annual Report Gross Expense Ratio | 0.29 | 0.14 | 207% |
| Fund Existence | 29 years | 50 years | - |
| Gain YTD | 11.187 | 10.684 | 105% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.79B | 1.67T | 0% |
| Annual Yield % from dividends | 0.72 | 0.97 | 75% |
| Returns for 1 year | 21.82 | 21.06 | 104% |
| Returns for 3 years | 72.53 | 68.37 | 106% |
| Returns for 5 years | 80.30 | 73.37 | 109% |
| Returns for 10 years | 277.84 | 250.98 | 111% |