| 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 | 5.509 | 2.530 | 218% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 3000 | 33% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 506M | 39.7B | 1% |
| Annual Yield % from dividends | 0.00 | 0.43 | - |
| Returns for 1 year | -0.57 | 0.48 | -119% |
| Returns for 3 years | 41.53 | 37.92 | 110% |
| Returns for 5 years | 4.71 | 18.88 | 25% |
| Returns for 10 years | 81.91 | 135.27 | 61% |