| NBSRX | VFFSX | NBSRX / VFFSX | |
| Total Expense Ratio | 0.86 | 0.01 | 8,600% |
| Annual Report Gross Expense Ratio | 0.86 | 0.01 | 8,600% |
| Fund Existence | 32 years | 10 years | - |
| Gain YTD | 14.503 | 9.445 | 154% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 5000000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.75B | 1.7T | 0% |
| Annual Yield % from dividends | 0.00 | 1.04 | - |
| Returns for 1 year | 29.57 | 24.07 | 123% |
| Returns for 3 years | 63.89 | 72.05 | 89% |
| Returns for 5 years | 36.59 | 75.40 | 49% |
| Returns for 10 years | 105.78 | 268.91 | 39% |