| NBGAX | VISGX | NBGAX / VISGX | |
| Total Expense Ratio | 1.34 | 0.19 | 705% |
| Annual Report Gross Expense Ratio | 1.34 | 0.19 | 705% |
| Fund Existence | 29 years | 28 years | - |
| Gain YTD | 9.580 | 18.596 | 52% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 7.49B | 45.5B | 16% |
| Annual Yield % from dividends | 0.00 | 0.34 | - |
| Returns for 1 year | -4.08 | 31.90 | -13% |
| Returns for 3 years | -0.54 | 63.10 | -1% |
| Returns for 5 years | -23.58 | 24.51 | -96% |
| Returns for 10 years | -1.65 | 201.80 | -1% |