| February 25, 2014 | Marshall Wace LLP | 0.40% | still open |
| February 25, 2014 | Morton Holdings, INC. | 0.24% | still open |
| February 24, 2014 | Odey Asset Management LLP | 0.86% | still open |
| February 19, 2014 | Marshall Wace LLP | 0.59% | still open |
| February 18, 2014 | Blackrock Institutional Trust Company, National Association | 1.57% | still open |
| February 13, 2014 | Blackrock Institutional Trust Company, National Association | 1.69% | still open |
| February 13, 2014 | Marshall Wace LLP | 0.65% | still open |
| February 6, 2014 | Bluecrest Capital Management Limited | 0.81% | still open |
| February 4, 2014 | Marshall Wace LLP | 0.70% | still open |
| February 3, 2014 | Blackrock Institutional Trust Company, National Association | 1.79% | still open |
| January 31, 2014 | Blackrock Institutional Trust Company, National Association | 1.85% | still open |
| January 30, 2014 | Marshall Wace LLP | 0.60% | still open |
| January 28, 2014 | Marshall Wace LLP | 0.51% | still open |
| January 27, 2014 | Bluecrest Capital Management Limited | 0.70% | still open |
| January 23, 2014 | Blackrock Institutional Trust Company, National Association | 1.90% | still open |
| January 22, 2014 | Millennium Capital Partners LLP | 0.33% | still open |
| January 20, 2014 | Millennium Capital Partners LLP | 0.60% | still open |
| January 16, 2014 | Blackrock Investment Management (UK) Limited | 0.71% | still open |
| January 16, 2014 | GLG Partners LP | 0.02% | still open |
| January 15, 2014 | Blackrock Institutional Trust Company, National Association | 2.09% | still open |
| January 15, 2014 | GLG Partners LP | 0.55% | still open |
| January 13, 2014 | Bluecrest Capital Management Limited | 0.60% | still open |
| January 10, 2014 | Blackrock Institutional Trust Company, National Association | 2.13% | still open |
| January 9, 2014 | Millennium Capital Partners LLP | 0.57% | still open |
| January 8, 2014 | GLG Partners LP | 0.69% | still open |
| January 8, 2014 | Millennium Capital Partners LLP | 0.60% | still open |
| January 8, 2014 | Bluecrest Capital Management Limited | 0.50% | still open |
| January 7, 2014 | Blackrock Institutional Trust Company, National Association | 2.22% | still open |
| December 20, 2013 | Blackrock Investment Management (UK) Limited | 0.62% | still open |
| December 18, 2013 | Blackrock Institutional Trust Company, National Association | 2.39% | still open |
| December 11, 2013 | Bluecrest Capital Management Limited | 0.49% | still open |
| November 25, 2013 | Blackrock Institutional Trust Company, National Association | 2.40% | still open |
| November 25, 2013 | GLG Partners LP | 0.39% | still open |
| November 20, 2013 | Blackrock Investment Management (UK) Limited | 0.58% | still open |
| November 19, 2013 | GLG Partners LP | 0.59% | still open |
| November 19, 2013 | Bluecrest Capital Management Limited | 0.50% | still open |
| November 14, 2013 | Blackrock Institutional Trust Company, National Association | 2.38% | still open |
| November 14, 2013 | GLG Partners LP | 0.76% | still open |
| November 13, 2013 | Bluecrest Capital Management Limited | 0.49% | still open |
| November 8, 2013 | Highbridge Capital Management LLC | 0.48% | still open |
| November 7, 2013 | Blackrock Institutional Trust Company, National Association | 2.43% | still open |
| November 5, 2013 | Highbridge Capital Management LLC | 0.59% | still open |
| October 31, 2013 | Bluecrest Capital Management Limited | 0.50% | still open |
| October 30, 2013 | Blackrock Institutional Trust Company, National Association | 2.39% | still open |
| October 29, 2013 | Highbridge Capital Management LLC | 0.69% | still open |
| October 28, 2013 | Blackrock Investment Management (UK) Limited | 0.61% | still open |
| October 28, 2013 | Bluecrest Capital Management Limited | 0.49% | still open |
| October 24, 2013 | Highbridge Capital Management LLC | 0.78% | still open |
| October 24, 2013 | GLG Partners LP | 0.66% | still open |
| October 18, 2013 | Blackrock Institutional Trust Company, National Association | 2.40% | still open |