Institutional investors hold a majority ownership of UTHR through the 107.81% of the outstanding shares that they control. This interest is also higher than at almost any other company in the Pharmaceuticals: Other industry. Last, during the quarter ended March 2013, these large investors purchased a net $2.5 million shares.
| Other institutional | 55.98% |
| Mutual fund holders | 51.84% |
| Individual stakeholders | 12.42% |