| NRGSX | NSRSX | NRGSX / NSRSX | |
| Total Expense Ratio | 0.74 | 0.81 | 91% |
| Annual Report Gross Expense Ratio | 0.74 | 1.01 | 73% |
| Fund Existence | 13 years | 8 years | - |
| Gain YTD | 6.643 | 20.305 | 33% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 7.32B | 683M | 1,072% |
| Annual Yield % from dividends | 0.47 | 0.00 | - |
| Returns for 1 year | -5.52 | 32.22 | -17% |
| Returns for 3 years | -0.31 | 65.07 | -0% |
| Returns for 5 years | -22.80 | 18.39 | -124% |
| Returns for 10 years | 7.98 | N/A | - |