| NSBFX | VFFSX | NSBFX / VFFSX | |
| Total Expense Ratio | 0.62 | 0.01 | 6,200% |
| Annual Report Gross Expense Ratio | 0.62 | 0.01 | 6,200% |
| Fund Existence | 13 years | 9 years | - |
| Gain YTD | 9.893 | 16.122 | 61% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 5000000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 6.73B | 1.46T | 0% |
| Annual Yield % from dividends | 1.06 | 1.13 | 95% |
| Returns for 1 year | 0.77 | 12.72 | 6% |
| Returns for 3 years | 30.93 | 67.45 | 46% |
| Returns for 5 years | 51.31 | 86.00 | 60% |
| Returns for 10 years | 111.46 | N/A | - |