| NRGSX | WFSAX | NRGSX / WFSAX | |
| Total Expense Ratio | 0.74 | 1.27 | 58% |
| Annual Report Gross Expense Ratio | 0.74 | 1.35 | 55% |
| Fund Existence | 13 years | 22 years | - |
| Gain YTD | 12.002 | 12.939 | 93% |
| Front Load | N/A | 6% | - |
| Min. Initial Investment | 0 | 1000 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 7.51B | 536M | 1,401% |
| Annual Yield % from dividends | 0.44 | 0.00 | - |
| Returns for 1 year | -5.23 | 8.13 | -64% |
| Returns for 3 years | -1.53 | -1.22 | 126% |
| Returns for 5 years | -19.58 | -51.16 | 38% |
| Returns for 10 years | 11.10 | -24.89 | -45% |