| NBSRX | VFFSX | NBSRX / VFFSX | |
| Total Expense Ratio | 0.88 | 0.01 | 8,800% |
| Annual Report Gross Expense Ratio | 0.88 | 0.01 | 8,800% |
| Fund Existence | 32 years | 9 years | - |
| Gain YTD | 9.564 | 14.262 | 67% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 5000000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 1.94B | 1.46T | 0% |
| Annual Yield % from dividends | 0.00 | 1.13 | - |
| Returns for 1 year | 3.84 | 12.06 | 32% |
| Returns for 3 years | 35.25 | 66.74 | 53% |
| Returns for 5 years | 25.08 | 84.99 | 30% |
| Returns for 10 years | 56.30 | N/A | - |