| BUFMX | PMBMX | BUFMX / PMBMX | |
| Total Expense Ratio | 0.97 | 1.14 | 85% |
| Annual Report Gross Expense Ratio | 0.97 | 1.14 | 85% |
| Fund Existence | 24 years | 25 years | - |
| Gain YTD | -1.901 | -0.881 | 216% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 2500 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 128M | 30.9B | 0% |
| Annual Yield % from dividends | 0.00 | 0.02 | - |
| Returns for 1 year | -9.19 | -6.86 | 134% |
| Returns for 3 years | 9.44 | 30.98 | 30% |
| Returns for 5 years | -16.41 | 22.54 | -73% |
| Returns for 10 years | -11.26 | 83.67 | -13% |