| NBMBX | PMBJX | NBMBX / PMBJX | |
| Total Expense Ratio | 1.18 | 0.76 | 155% |
| Annual Report Gross Expense Ratio | 1.18 | 0.76 | 155% |
| Fund Existence | 30 years | 25 years | - |
| Gain YTD | 11.347 | -6.906 | -164% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 1000 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 2.26B | 24.6B | 9% |
| Annual Yield % from dividends | 0.00 | 0.00 | - |
| Returns for 1 year | -8.93 | -13.38 | 67% |
| Returns for 3 years | 15.25 | 15.44 | 99% |
| Returns for 5 years | -20.59 | -1.52 | 1,359% |
| Returns for 10 years | 25.72 | 76.50 | 34% |