| 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 | 16.500 | 16.659 | 99% |
| Front Load | N/A | N/A | - |
| Min. Initial Investment | 1000 | 1000000 | 0% |
| Min. Initial Investment IRA | N/A | N/A | - |
| Net Assets | 4.38B | 4.38B | 100% |
| Annual Yield % from dividends | 6.14 | 6.03 | 102% |
| Returns for 1 year | 19.56 | 19.85 | 99% |
| Returns for 3 years | 81.24 | 81.77 | 99% |
| Returns for 5 years | 131.63 | 133.08 | 99% |
| Returns for 10 years | 172.31 | 174.53 | 99% |