| BRBCX | MBXIX | BRBCX / MBXIX | |
| Total Expense Ratio | 1.77 | 2.00 | 89% |
| Annual Report Gross Expense Ratio | 1.77 | 2.00 | 89% |
| Fund Existence | 33 years | 11 years | - |
| Gain YTD | 10.847 | 13.750 | 79% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 2500 | 40% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 6.26B | 10.7B | 58% |
| Annual Yield % from dividends | 0.00 | 0.00 | - |
| Returns for 1 year | 9.51 | 17.58 | 54% |
| Returns for 3 years | 27.86 | 31.08 | 90% |
| Returns for 5 years | 36.03 | 39.39 | 91% |
| Returns for 10 years | 50.03 | 91.76 | 55% |