| April 9, 2015 | Millennium International Management LP | 0.48% | still open |
| April 8, 2015 | Millennium International Management LP | 0.52% | still open |
| April 1, 2015 | Pennant Capital Management LLC | 0.60% | still open |
| March 11, 2015 | Citadel Europe LLP | 0.71% | still open |
| March 5, 2015 | Citadel Europe LLP | 0.65% | still open |
| February 23, 2015 | Marshall Wace LLP | 0.47% | still open |
| February 12, 2015 | Marshall Wace LLP | 0.52% | still open |
| January 1, 2015 | Bluecrest Capital Management Limited | 0.45% | still open |
| November 24, 2014 | Bluecrest Capital Management Limited | 0.59% | still open |
| November 17, 2014 | Bluecrest Capital Management Limited | 0.60% | still open |
| October 20, 2014 | Bluecrest Capital Management Limited | 0.59% | still open |
| October 15, 2014 | Bluecrest Capital Management Limited | 0.60% | still open |
| October 15, 2014 | GLG Partners LP | 0.33% | still open |
| October 10, 2014 | GLG Partners LP | 0.52% | still open |
| October 8, 2014 | GLG Partners LP | 0.66% | still open |
| October 3, 2014 | Bluecrest Capital Management Limited | 0.57% | still open |
| October 1, 2014 | GLG Partners LP | 0.81% | still open |
| September 16, 2014 | GLG Partners LP | 1.01% | still open |
| September 11, 2014 | GLG Partners LP | 1.02% | still open |
| September 9, 2014 | GLG Partners LP | 0.62% | still open |
| August 15, 2014 | Bluecrest Capital Management Limited | 0.60% | still open |
| August 1, 2014 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| June 27, 2014 | Bluecrest Capital Management Limited | 0.50% | still open |
| June 20, 2014 | Bluecrest Capital Management Limited | 0.45% | still open |
| June 17, 2014 | Bluecrest Capital Management Limited | 0.56% | still open |
| June 16, 2014 | Bluecrest Capital Management Limited | 0.49% | still open |
| June 12, 2014 | Bluecrest Capital Management Limited | 0.50% | still open |
| June 6, 2014 | Blackrock Institutional Trust Company, National Association | 0.59% | still open |
| June 5, 2014 | Marshall Wace LLP | 0.49% | still open |
| May 29, 2014 | Marshall Wace LLP | 0.51% | still open |
| May 27, 2014 | Marshall Wace LLP | 0.49% | still open |
| May 21, 2014 | Nomura International PLC | 0.16% | still open |
| May 15, 2014 | Marshall Wace LLP | 0.58% | still open |
| May 9, 2014 | Marshall Wace LLP | 0.60% | still open |
| May 9, 2014 | Nomura International PLC | 0.60% | still open |
| May 8, 2014 | Nomura International PLC | 0.58% | still open |
| April 29, 2014 | Blackrock Institutional Trust Company, National Association | 0.69% | still open |
| April 28, 2014 | Marshall Wace LLP | 0.54% | still open |
| April 24, 2014 | Marshall Wace LLP | 0.61% | still open |
| April 17, 2014 | Marshall Wace LLP | 0.52% | still open |
| April 3, 2014 | Morton Holdings, INC. | 0.46% | still open |
| March 31, 2014 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |
| March 27, 2014 | Morton Holdings, INC. | 0.57% | still open |
| March 14, 2014 | Blackrock Institutional Trust Company, National Association | 0.61% | still open |
| March 7, 2014 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| March 6, 2014 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| February 25, 2014 | Blackrock Institutional Trust Company, National Association | 0.59% | still open |
| February 19, 2014 | Pennant Capital Management LLC | 0.68% | still open |
| February 4, 2014 | Blackrock Institutional Trust Company, National Association | 0.67% | still open |
| February 3, 2014 | Blackrock Institutional Trust Company, National Association | 0.71% | still open |
| December 19, 2013 | Blackrock Institutional Trust Company, National Association | 0.89% | still open |
| December 3, 2013 | Pennant Capital Management LLC | 0.79% | still open |
| November 21, 2013 | Morton Holdings, INC. | 0.60% | still open |
| October 25, 2013 | Morton Holdings, INC. | 0.50% | still open |
| October 21, 2013 | Blackrock Institutional Trust Company, National Association | 0.90% | still open |
| October 10, 2013 | Morton Holdings, INC. | 0.47% | still open |
| October 9, 2013 | Morton Holdings, INC. | 0.54% | still open |
| September 30, 2013 | Blackrock Institutional Trust Company, National Association | 0.82% | still open |
| September 23, 2013 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |
| September 13, 2013 | Blackrock Institutional Trust Company, National Association | 0.60% | still open |
| September 4, 2013 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| August 27, 2013 | Blackrock Institutional Trust Company, National Association | 0.46% | still open |
| July 9, 2013 | Blackrock Institutional Trust Company, National Association | 0.52% | still open |
| March 22, 2013 | Morton Holdings, INC. | 0.69% | still open |
| March 21, 2013 | Morton Holdings, INC. | 0.71% | still open |
| March 19, 2013 | Pennant Capital Management LLC | 0.85% | still open |
| November 2, 2012 | Pennant Capital Management LLC | 0.98% | still open |
| November 1, 2012 | Morton Holdings, INC. | 0.84% | still open |