| December 15, 2014 | Elliott Capital Advisors L.P * | 1.82% | |
| December 5, 2014 | Elliott Capital Advisors L.P * | 1.96% | |
| December 3, 2014 | Logos International Sicav-Fis * | 0.49% | |
| December 1, 2014 | Elliott Capital Advisors L.P * | 1.84% | |
| November 26, 2014 | Cheyne Capital Management (UK) LLP | 0.20% | |
| November 25, 2014 | Cheyne Capital Management (UK) LLP | 0.98% | |
| November 25, 2014 | Logos International Sicav-Fis * | 0.65% | |
| November 24, 2014 | Cheyne Capital Management (UK) LLP | 1.96% | |
| November 18, 2014 | Cheyne Capital Management (UK) LLP | 2.09% | |
| November 17, 2014 | Logos International Sicav-Fis * | 0.60% | |
| November 14, 2014 | Cheyne Capital Management (UK) LLP | 2.14% | |
| November 13, 2014 | Cheyne Capital Management (UK) LLP | 2.00% | |
| November 12, 2014 | Cheyne Capital Management (UK) LLP | 1.81% | |
| November 11, 2014 | Cheyne Capital Management (UK) LLP | 1.67% | |
| November 10, 2014 | Cheyne Capital Management (UK) LLP | 1.42% | |
| November 6, 2014 | Cheyne Capital Management (UK) LLP | 1.28% | |
| November 4, 2014 | Cheyne Capital Management (UK) LLP | 1.14% | |
| October 29, 2014 | Marshall Wace LLP | 0.38% | |
| October 22, 2014 | Elliott Capital Advisors L.P * | 1.93% | |
| October 21, 2014 | Elliott Capital Advisors L.P * | 2.15% | |
| October 20, 2014 | Marshall Wace LLP | 0.54% | |
| October 14, 2014 | Jericho Capital Asset Management LP | 0.44% | |
| October 13, 2014 | Jericho Capital Asset Management LP | 0.53% | |
| October 10, 2014 | Jericho Capital Asset Management LP | 0.76% | |
| October 8, 2014 | Cheyne Capital Management (UK) LLP | 1.03% | |
| October 6, 2014 | Cheyne Capital Management (UK) LLP | 0.93% | |
| October 3, 2014 | Cheyne Capital Management (UK) LLP | 0.89% | |
| October 2, 2014 | Cheyne Capital Management (UK) LLP | 0.70% | |
| September 30, 2014 | Cheyne Capital Management (UK) LLP | 0.52% | |
| September 25, 2014 | Logos International Sicav-Fis * | 0.27% | |
| September 24, 2014 | Logos International Sicav-Fis * | 0.52% | |
| September 23, 2014 | GAP Gestora de Recursos LTDA * | 0.49% | |
| September 22, 2014 | GAP Gestora de Recursos LTDA * | 0.51% | |
| September 16, 2014 | Jericho Capital Asset Management LP | 0.90% | |
| September 15, 2014 | Elliott Capital Advisors L.P * | 2.82% | |
| September 15, 2014 | Jericho Capital Asset Management LP | 1.05% | |
| September 11, 2014 | Elliott Capital Advisors L.P * | 2.70% | |
| September 10, 2014 | Elliott Capital Advisors L.P * | 2.60% | |
| September 8, 2014 | Elliott Capital Advisors L.P * | 2.50% | |
| September 5, 2014 | Elliott Capital Advisors L.P * | 2.37% | |
| August 28, 2014 | Elliott Capital Advisors L.P * | 2.11% | |
| July 31, 2014 | Hengistbury Investment Partners LLP | 0.48% | |
| July 31, 2014 | Marshall Wace LLP | 0.34% | |
| July 30, 2014 | Marshall Wace LLP | 0.51% | |
| July 29, 2014 | Marshall Wace LLP | 0.61% | |
| July 28, 2014 | Falcon Edge Capital, LP | 1.13% | |
| July 28, 2014 | Logos International Sicav-Fis * | 0.62% | |
| July 24, 2014 | Marshall Wace LLP | 0.78% | |
| July 24, 2014 | Hengistbury Investment Partners LLP | 0.59% | |
| July 23, 2014 | BTG Pactual Europe LLP | 0.43% | |