| 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 | 50 years | - |
| Gain YTD | 9.974 | 11.097 | 90% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 5000000 | 0 | - |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 1.23B | 1.76T | 0% |
| Annual Yield % from dividends | 0.64 | 0.94 | 67% |
| Returns for 1 year | 11.98 | 15.25 | 79% |
| Returns for 3 years | 41.29 | 70.24 | 59% |
| Returns for 5 years | 39.34 | 70.38 | 56% |
| Returns for 10 years | 170.78 | 258.28 | 66% |