Institutional investors hold a majority ownership of OIS through the 108.52% of the outstanding shares that they control. This interest is also higher than at almost any other company in the Oilfield Services/Equipment industry. Last, during the quarter ended March 2013, these large investors purchased a net $6.3 million shares.
| Mutual fund holders | 56.50% |
| Other institutional | 52.02% |
| Individual stakeholders | 1.85% |