| 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 | 29 years | 10 years | - |
| Gain YTD | 11.187 | 10.685 | 105% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 5000000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.79B | 1.67T | 0% |
| Annual Yield % from dividends | 0.72 | 1.08 | 67% |
| Returns for 1 year | 21.82 | 21.07 | 104% |
| Returns for 3 years | 72.53 | 68.45 | 106% |
| Returns for 5 years | 80.30 | 73.48 | 109% |
| Returns for 10 years | 277.84 | 251.21 | 111% |