| NBSLX | VFFSX | NBSLX / VFFSX | |
| Total Expense Ratio | 0.69 | 0.01 | 6,900% |
| Annual Report Gross Expense Ratio | 0.69 | 0.01 | 6,900% |
| Fund Existence | 19 years | 10 years | - |
| Gain YTD | 13.731 | 9.467 | 145% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 5000000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.69B | 1.67T | 0% |
| Annual Yield % from dividends | 0.02 | 1.08 | 2% |
| Returns for 1 year | 22.52 | 18.19 | 124% |
| Returns for 3 years | 56.37 | 63.94 | 88% |
| Returns for 5 years | 30.83 | 70.69 | 44% |
| Returns for 10 years | 93.60 | 247.94 | 38% |