| NBGIX | VISGX | NBGIX / VISGX | |
| Total Expense Ratio | 0.84 | 0.19 | 442% |
| Annual Report Gross Expense Ratio | 0.84 | 0.19 | 442% |
| Fund Existence | 27 years | 28 years | - |
| Gain YTD | 9.829 | 18.596 | 53% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 7.49B | 45.5B | 16% |
| Annual Yield % from dividends | 0.32 | 0.34 | 94% |
| Returns for 1 year | -3.11 | 31.90 | -10% |
| Returns for 3 years | 1.60 | 63.10 | 3% |
| Returns for 5 years | -20.87 | 24.51 | -85% |
| Returns for 10 years | 13.37 | 201.80 | 7% |