| 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 | 10.936 | -6.008 | -182% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 0 | 1000 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 2.27B | 23.7B | 10% |
| Annual Yield % from dividends | 0.00 | 0.00 | - |
| Returns for 1 year | -10.03 | -12.50 | 80% |
| Returns for 3 years | 13.28 | 14.19 | 94% |
| Returns for 5 years | -26.12 | -3.09 | 845% |
| Returns for 10 years | 30.56 | 83.89 | 36% |