| 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 | 10.948 | 11.959 | 92% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 6.95B | 44.7B | 16% |
| Annual Yield % from dividends | 0.00 | 0.32 | - |
| Returns for 1 year | -9.11 | 12.25 | -74% |
| Returns for 3 years | 0.24 | 50.95 | 0% |
| Returns for 5 years | -26.11 | 17.36 | -150% |
| Returns for 10 years | -4.80 | 167.12 | -3% |