| IRGFX | NRGSX | IRGFX / NRGSX | |
| Total Expense Ratio | 0.76 | 0.74 | 103% |
| Annual Report Gross Expense Ratio | 0.92 | 0.74 | 124% |
| Fund Existence | 12 years | 13 years | - |
| Gain YTD | 3.205 | 5.452 | 59% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 1.08B | 8.49B | 13% |
| Annual Yield % from dividends | 0.00 | 0.48 | - |
| Returns for 1 year | 4.77 | -12.75 | -37% |
| Returns for 3 years | 15.30 | -6.33 | -242% |
| Returns for 5 years | -30.32 | -23.10 | 131% |
| Returns for 10 years | 45.30 | 24.83 | 182% |