| 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 | 27.063 | 27.181 | 100% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 1000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.71B | 4.71B | 100% |
| Annual Yield % from dividends | 5.91 | 5.79 | 102% |
| Returns for 1 year | 30.31 | 30.37 | 100% |
| Returns for 3 years | 86.17 | 86.79 | 99% |
| Returns for 5 years | 183.60 | 184.25 | 100% |
| Returns for 10 years | 180.48 | 182.69 | 99% |