| SPIDX | VFFSX | SPIDX / VFFSX | |
| Total Expense Ratio | 0.29 | 0.01 | 2,900% |
| Annual Report Gross Expense Ratio | 0.29 | 0.01 | 2,900% |
| Fund Existence | 28 years | 9 years | - |
| Gain YTD | 17.427 | 16.668 | 105% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 5000000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.05B | 1.46T | 0% |
| Annual Yield % from dividends | 0.83 | 1.13 | 73% |
| Returns for 1 year | 15.27 | 14.56 | 105% |
| Returns for 3 years | 77.12 | 71.84 | 107% |
| Returns for 5 years | 96.91 | 91.34 | 106% |
| Returns for 10 years | 261.98 | N/A | - |