| MLPZX | OSPMX | MLPZX / OSPMX | |
| Total Expense Ratio | 1.64 | 1.56 | 105% |
| Annual Report Gross Expense Ratio | 1.64 | 1.56 | 105% |
| Fund Existence | 16 years | 13 years | - |
| Gain YTD | 24.812 | 24.814 | 100% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 1000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.64B | 4.64B | 100% |
| Annual Yield % from dividends | 5.91 | 5.79 | 102% |
| Returns for 1 year | 26.20 | 26.18 | 100% |
| Returns for 3 years | 82.27 | 82.37 | 100% |
| Returns for 5 years | 163.67 | 164.21 | 100% |
| Returns for 10 years | 190.71 | 192.69 | 99% |