| 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 | 6.075 | 23.709 | 26% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 250 | 2500 | 10% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 172B | 9.02B | 1,906% |
| Annual Yield % from dividends | 0.33 | 0.12 | 265% |
| Returns for 1 year | 12.12 | 31.90 | 38% |
| Returns for 3 years | 37.44 | 64.81 | 58% |
| Returns for 5 years | 11.16 | 20.06 | 56% |
| Returns for 10 years | 111.02 | 235.53 | 47% |