| 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 | -4.162 | 10.377 | -40% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 8.43B | 2.84B | 297% |
| Annual Yield % from dividends | 0.07 | 0.00 | - |
| Returns for 1 year | -13.93 | 1.13 | -1,230% |
| Returns for 3 years | -1.73 | 60.68 | -3% |
| Returns for 5 years | -6.57 | 28.28 | -23% |
| Returns for 10 years | 10.77 | 191.91 | 6% |