| February 24, 2015 | Blackrock Institutional Trust Company, National Association | 0.49% | still open |
| February 16, 2015 | Insight Investment Management (global) LTD | 1.29% | still open |
| February 10, 2015 | Insight Investment Management (global) LTD | 1.14% | still open |
| January 19, 2015 | Insight Investment Management (global) LTD | 0.99% | still open |
| January 8, 2015 | Blackrock Investment Management (UK) Limited | 0.49% | still open |
| December 2, 2014 | Blackrock Institutional Trust Company, National Association | 0.52% | still open |
| November 14, 2014 | GAM Investment Management (switzerland) LTD. ? Lugano Branch. | 0.62% | still open |
| November 13, 2014 | Insight Investment Management (global) LTD | 1.05% | still open |
| November 6, 2014 | Insight Investment Management (global) LTD | 1.10% | still open |
| October 7, 2014 | Blackrock Investment Management (UK) Limited | 0.57% | still open |
| October 7, 2014 | Schroder Investment Management Limited | 0.47% | still open |
| October 2, 2014 | Schroder Investment Management Limited | 0.68% | still open |
| September 9, 2014 | Blackrock Institutional Trust Company, National Association | 0.46% | still open |
| September 1, 2014 | Blackrock Investment Management (UK) Limited | 0.69% | still open |
| August 21, 2014 | Schroder Investment Management Limited | 0.84% | still open |
| August 15, 2014 | Blackrock Investment Management (UK) Limited | 0.73% | still open |
| August 14, 2014 | Blackrock Investment Management (UK) Limited | 0.69% | still open |
| August 11, 2014 | Blackrock Investment Management (UK) Limited | 0.70% | still open |
| August 11, 2014 | Blackrock Institutional Trust Company, National Association | 0.59% | still open |
| July 28, 2014 | Schroder Investment Management Limited | 0.60% | still open |
| July 24, 2014 | Blackrock Investment Management (UK) Limited | 0.67% | still open |
| July 24, 2014 | Schroder Investment Management Limited | 0.59% | still open |
| July 22, 2014 | Blackrock Institutional Trust Company, National Association | 0.69% | still open |
| July 21, 2014 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |
| July 7, 2014 | Blackrock Investment Management (UK) Limited | 0.50% | still open |
| June 27, 2014 | Schroder Investment Management Limited | 0.48% | still open |
| June 26, 2014 | Schroder Investment Management Limited | 0.57% | still open |
| June 24, 2014 | Blackrock Investment Management (UK) Limited | 0.49% | still open |
| June 12, 2014 | Schroder Investment Management Limited | 0.61% | still open |
| June 10, 2014 | Blackrock Institutional Trust Company, National Association | 0.62% | still open |
| May 28, 2014 | Blackrock Institutional Trust Company, National Association | 0.54% | still open |
| April 1, 2014 | Insight Investment Management (global) LTD | 1.08% | still open |
| April 1, 2014 | Blackrock Institutional Trust Company, National Association | 0.43% | still open |
| March 26, 2014 | Insight Investment Management (global) LTD | 0.97% | still open |
| March 20, 2014 | Blackrock Institutional Trust Company, National Association | 0.58% | still open |
| March 12, 2014 | Blackrock Institutional Trust Company, National Association | 0.68% | still open |
| February 20, 2014 | Blackrock Investment Management (UK) Limited | 0.50% | still open |
| February 4, 2014 | Blackrock Institutional Trust Company, National Association | 0.71% | still open |
| January 31, 2014 | Blackrock Investment Management (UK) Limited | 0.49% | still open |
| January 30, 2014 | Blackrock Investment Management (UK) Limited | 0.50% | still open |
| January 29, 2014 | Blackrock Investment Management (UK) Limited | 0.49% | still open |
| January 17, 2014 | Blackrock Institutional Trust Company, National Association | 0.69% | still open |
| January 7, 2014 | Blackrock Institutional Trust Company, National Association | 0.77% | still open |
| December 20, 2013 | Insight Investment Management (global) LTD | 0.87% | still open |
| December 13, 2013 | Blackrock Investment Management (UK) Limited | 0.59% | still open |
| December 12, 2013 | Insight Investment Management (global) LTD | 0.98% | still open |
| December 10, 2013 | Insight Investment Management (global) LTD | 1.08% | still open |
| December 10, 2013 | Blackrock Institutional Trust Company, National Association | 0.99% | still open |
| November 18, 2013 | Insight Investment Management (global) LTD | 1.18% | still open |
| November 15, 2013 | Insight Investment Management (global) LTD | 1.32% | still open |