| NBMIX | VISGX | NBMIX / VISGX | |
| Total Expense Ratio | 1.31 | 0.19 | 689% |
| Annual Report Gross Expense Ratio | 1.31 | 0.19 | 689% |
| Fund Existence | 28 years | 28 years | - |
| Gain YTD | 15.665 | 17.346 | 90% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 690M | 47B | 1% |
| Annual Yield % from dividends | 0.00 | 0.31 | - |
| Returns for 1 year | 22.15 | 26.83 | 83% |
| Returns for 3 years | 50.56 | 51.09 | 99% |
| Returns for 5 years | 10.45 | 27.48 | 38% |
| Returns for 10 years | 129.81 | 180.44 | 72% |