| NPFCX | PRGSX | NPFCX / PRGSX | |
| Total Expense Ratio | 1.47 | 0.81 | 181% |
| Annual Report Gross Expense Ratio | 1.47 | 0.81 | 181% |
| Fund Existence | 25 years | 31 years | - |
| Gain YTD | 6.961 | 18.976 | 37% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 250 | 2500 | 10% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 166B | 8.42B | 1,972% |
| Annual Yield % from dividends | 0.33 | 0.12 | 263% |
| Returns for 1 year | 5.93 | 19.24 | 31% |
| Returns for 3 years | 36.05 | 53.10 | 68% |
| Returns for 5 years | 5.89 | 10.17 | 58% |
| Returns for 10 years | 94.30 | 190.96 | 49% |