| January 3, 2014 | GLG Partners LP | 1.59% | still open |
| January 2, 2014 | GLG Partners LP | 1.61% | still open |
| December 31, 2013 | GLG Partners LP | 1.55% | still open |
| December 30, 2013 | Saemor Capital B.V. | 0.54% | still open |
| December 30, 2013 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| December 20, 2013 | Blackrock Institutional Trust Company, National Association | 0.51% | still open |
| December 17, 2013 | Jpmorgan Asset Management (UK) LTD | 1.09% | still open |
| December 16, 2013 | Jpmorgan Asset Management (UK) LTD | 1.17% | still open |
| December 13, 2013 | Jpmorgan Asset Management (UK) LTD | 1.26% | still open |
| December 13, 2013 | Bluecrest Capital Management Limited | 0.70% | still open |
| December 11, 2013 | Jpmorgan Asset Management (UK) LTD | 1.57% | still open |
| December 2, 2013 | GLG Partners LP | 1.32% | still open |
| November 25, 2013 | Jpmorgan Asset Management (UK) LTD | 1.20% | still open |
| November 22, 2013 | Jpmorgan Asset Management (UK) LTD | 1.17% | still open |
| November 22, 2013 | Blackrock Institutional Trust Company, National Association | 0.45% | still open |
| November 21, 2013 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| November 8, 2013 | Bluecrest Capital Management Limited | 0.68% | still open |
| November 7, 2013 | Bluecrest Capital Management Limited | 0.70% | still open |
| November 6, 2013 | Jpmorgan Asset Management (UK) LTD | 1.05% | still open |
| October 29, 2013 | Bluecrest Capital Management Limited | 0.61% | still open |
| October 25, 2013 | Bluecrest Capital Management Limited | 0.59% | still open |
| October 21, 2013 | Jpmorgan Asset Management (UK) LTD | 0.96% | still open |
| October 17, 2013 | Jpmorgan Asset Management (UK) LTD | 0.81% | still open |
| October 15, 2013 | Bluecrest Capital Management Limited | 0.68% | still open |
| October 10, 2013 | GLG Partners LP | 1.25% | still open |
| October 10, 2013 | Bluecrest Capital Management Limited | 0.78% | still open |
| October 9, 2013 | GLG Partners LP | 1.08% | still open |
| October 7, 2013 | Bluecrest Capital Management Limited | 0.80% | still open |
| October 4, 2013 | Jpmorgan Asset Management (UK) LTD | 0.72% | still open |
| September 23, 2013 | Bluecrest Capital Management Limited | 0.79% | still open |
| September 18, 2013 | Bluecrest Capital Management Limited | 0.81% | still open |
| September 17, 2013 | Oxford Asset Management | 0.49% | still open |
| September 13, 2013 | Jpmorgan Asset Management (UK) LTD | 0.65% | still open |
| September 12, 2013 | Bluecrest Capital Management Limited | 0.71% | still open |
| September 10, 2013 | Oxford Asset Management | 0.59% | still open |
| August 29, 2013 | Jpmorgan Asset Management (UK) LTD | 0.77% | still open |
| August 22, 2013 | Bluecrest Capital Management Limited | 0.60% | still open |
| August 15, 2013 | Jpmorgan Asset Management (UK) LTD | 0.55% | still open |
| August 14, 2013 | Bluecrest Capital Management Limited | 0.59% | still open |
| August 13, 2013 | Oxford Asset Management | 0.60% | still open |
| August 9, 2013 | Jpmorgan Asset Management (UK) LTD | 0.67% | still open |
| August 8, 2013 | Bluecrest Capital Management Limited | 0.60% | still open |
| August 7, 2013 | Blackrock Institutional Trust Company, National Association | 0.38% | still open |
| August 6, 2013 | Blackrock Institutional Trust Company, National Association | 0.60% | still open |
| August 1, 2013 | Bluecrest Capital Management Limited | 0.59% | still open |
| July 30, 2013 | Blackrock Institutional Trust Company, National Association | 0.58% | still open |
| July 29, 2013 | Oxford Asset Management | 0.50% | still open |
| July 25, 2013 | Bluecrest Capital Management Limited | 0.61% | still open |
| July 25, 2013 | Jpmorgan Asset Management (UK) LTD | 0.53% | still open |
| July 23, 2013 | S.A.C. Capital Advisors, L.P. | 0.40% | still open |
| July 18, 2013 | GLG Partners LP | 0.94% | still open |
| July 16, 2013 | Blackrock Institutional Trust Company, National Association | 0.60% | still open |
| July 16, 2013 | Bluecrest Capital Management Limited | 0.50% | still open |
| June 20, 2013 | S.A.C. Capital Advisors, L.P. | 0.52% | still open |
| June 10, 2013 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| April 9, 2013 | Saemor Capital B.V. | 0.34% | still open |
| February 5, 2013 | Saemor Capital B.V. | 0.57% | still open |
| January 30, 2013 | GLG Partners LP | 0.30% | still open |
| January 23, 2013 | GLG Partners LP | 0.88% | still open |
| January 22, 2013 | GLG Partners LP | 0.93% | still open |
| January 22, 2013 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| January 21, 2013 | GLG Partners LP | 1.05% | still open |
| January 10, 2013 | GLG Partners LP | 1.16% | still open |
| January 4, 2013 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| December 7, 2012 | GLG Partners LP | 0.82% | still open |
| November 27, 2012 | GLG Partners LP | 0.75% | still open |
| November 22, 2012 | GLG Partners LP | 0.61% | still open |
| November 16, 2012 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| November 14, 2012 | Blackrock Institutional Trust Company, National Association | 0.58% | still open |
| November 6, 2012 | GLG Partners LP | 0.52% | still open |
| November 2, 2012 | Blackrock Institutional Trust Company, National Association | 0.69% | still open |
| November 1, 2012 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |