Institutional investors hold a majority ownership of PPO through the 132.32% of the outstanding shares that they control. This interest is also higher than at almost any other company in the Industrial Specialties industry. Last, during the quarter ended December 2012, these large investors purchased a net $795.7 thousand shares.
| Mutual fund holders | 78.67% |
| Other institutional | 53.65% |
| Individual stakeholders | 0.52% |