| NRGSX | PLKGX | NRGSX / PLKGX | |
| Total Expense Ratio | 0.74 | 0.81 | 91% |
| Annual Report Gross Expense Ratio | 0.74 | 0.81 | 91% |
| Fund Existence | 13 years | 10 years | - |
| Gain YTD | -7.590 | 6.191 | -123% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 8.19B | 2.82B | 291% |
| Annual Yield % from dividends | 0.07 | 0.00 | - |
| Returns for 1 year | -14.62 | 0.68 | -2,145% |
| Returns for 3 years | -4.10 | 55.50 | -7% |
| Returns for 5 years | -11.01 | 21.53 | -51% |
| Returns for 10 years | 3.70 | 175.89 | 2% |