| 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 | 30 years | - |
| Gain YTD | 6.915 | 22.515 | 31% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 250 | 2500 | 10% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 164B | 8.87B | 1,849% |
| Annual Yield % from dividends | 0.33 | 0.12 | 265% |
| Returns for 1 year | 12.68 | 30.17 | 42% |
| Returns for 3 years | 39.88 | 63.91 | 62% |
| Returns for 5 years | 14.35 | 20.72 | 69% |
| Returns for 10 years | 102.83 | 213.74 | 48% |