| NSBFX | VFFSX | NSBFX / VFFSX | |
| Total Expense Ratio | 0.61 | 0.01 | 6,100% |
| Annual Report Gross Expense Ratio | 0.61 | 0.01 | 6,100% |
| Fund Existence | 13 years | 10 years | - |
| Gain YTD | 2.818 | 17.891 | 16% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 5000000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 6.64B | 1.48T | 0% |
| Annual Yield % from dividends | 1.06 | 1.13 | 95% |
| Returns for 1 year | 0.76 | 14.87 | 5% |
| Returns for 3 years | 28.40 | 81.45 | 35% |
| Returns for 5 years | 45.02 | 87.59 | 51% |
| Returns for 10 years | 108.46 | N/A | - |