| 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 | 11.584 | 11.097 | 104% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.82B | 1.76T | 0% |
| Annual Yield % from dividends | 0.70 | 0.94 | 75% |
| Returns for 1 year | 15.98 | 15.25 | 105% |
| Returns for 3 years | 74.44 | 70.24 | 106% |
| Returns for 5 years | 77.21 | 70.38 | 110% |
| Returns for 10 years | 284.05 | 258.28 | 110% |