| 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 | 6.577 | 17.759 | 37% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 7.32B | 42.8B | 17% |
| Annual Yield % from dividends | 0.32 | 0.34 | 94% |
| Returns for 1 year | -5.59 | 34.40 | -16% |
| Returns for 3 years | -0.59 | 61.44 | -1% |
| Returns for 5 years | -23.15 | 30.62 | -76% |
| Returns for 10 years | 7.20 | 190.06 | 4% |