| 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 | 9.943 | 9.459 | 105% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.73B | 1.67T | 0% |
| Annual Yield % from dividends | 0.72 | 0.97 | 75% |
| Returns for 1 year | 18.92 | 18.18 | 104% |
| Returns for 3 years | 67.87 | 63.86 | 106% |
| Returns for 5 years | 77.38 | 70.57 | 110% |
| Returns for 10 years | 274.40 | 247.72 | 111% |