Institutional investors hold a majority ownership of OMC through the 102.89% of the outstanding shares that they control. This interest is also higher than at almost any other company in the Advertising/Marketing Services industry. Last, during the quarter ended March 2013, these large investors purchased a net $8.5 million shares.
| Other institutional | 54.14% |
| Mutual fund holders | 48.75% |
| Individual stakeholders | 1.27% |