| 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 | 2.670 | 9.467 | 28% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 5000000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 6.34B | 1.67T | 0% |
| Annual Yield % from dividends | 1.04 | 1.08 | 96% |
| Returns for 1 year | -0.46 | 18.19 | -3% |
| Returns for 3 years | 19.97 | 63.94 | 31% |
| Returns for 5 years | 26.48 | 70.69 | 37% |
| Returns for 10 years | 100.12 | 247.94 | 40% |