| 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 | 3.973 | 12.258 | 32% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 5000000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 6.37B | 1.69T | 0% |
| Annual Yield % from dividends | 1.04 | 1.08 | 96% |
| Returns for 1 year | -0.78 | 20.51 | -4% |
| Returns for 3 years | 26.72 | 75.16 | 36% |
| Returns for 5 years | 26.26 | 73.03 | 36% |
| Returns for 10 years | 101.47 | 251.26 | 40% |