| BIRKX | VFINX | BIRKX / VFINX | |
| Total Expense Ratio | 0.43 | 0.14 | 307% |
| Annual Report Gross Expense Ratio | 0.51 | 0.14 | 364% |
| Fund Existence | 10 years | 49 years | - |
| Gain YTD | 13.220 | 17.878 | 74% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 5000000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 1.03B | 1.48T | 0% |
| Annual Yield % from dividends | 0.77 | 1.02 | 75% |
| Returns for 1 year | 10.26 | 14.85 | 69% |
| Returns for 3 years | 51.44 | 81.33 | 63% |
| Returns for 5 years | 44.32 | 87.47 | 51% |
| Returns for 10 years | N/A | 234.30 | - |