| NBMIX | VISGX | NBMIX / VISGX | |
| Total Expense Ratio | 1.31 | 0.19 | 689% |
| Annual Report Gross Expense Ratio | 1.34 | 0.19 | 705% |
| Fund Existence | 27 years | 28 years | - |
| Gain YTD | 12.043 | 7.920 | 152% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 3000 | 33% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 538M | 39.7B | 1% |
| Annual Yield % from dividends | 0.00 | 0.43 | - |
| Returns for 1 year | 1.92 | 3.97 | 48% |
| Returns for 3 years | 47.12 | 41.11 | 115% |
| Returns for 5 years | 12.93 | 27.42 | 47% |
| Returns for 10 years | 96.65 | 154.40 | 63% |