| NBMLX | PMBMX | NBMLX / PMBMX | |
| Total Expense Ratio | 0.69 | 1.14 | 61% |
| Annual Report Gross Expense Ratio | 0.69 | 1.14 | 61% |
| Fund Existence | 19 years | 25 years | - |
| Gain YTD | 5.730 | 2.884 | 199% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 2.04B | 31.3B | 7% |
| Annual Yield % from dividends | 0.00 | 0.00 | - |
| Returns for 1 year | -11.54 | -2.75 | 420% |
| Returns for 3 years | 14.97 | 29.90 | 50% |
| Returns for 5 years | -24.17 | 18.60 | -130% |
| Returns for 10 years | 36.71 | 119.97 | 31% |