| January 12, 2015 | Blackrock Institutional Trust Company, National Association | 0.58% | still open |
| January 1, 2015 | Bluecrest Capital Management Limited | 0.42% | still open |
| December 30, 2014 | Blackrock Institutional Trust Company, National Association | 0.69% | still open |
| December 23, 2014 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |
| December 18, 2014 | Insight Investment Management (global) LTD | 0.57% | still open |
| December 11, 2014 | Blackrock Institutional Trust Company, National Association | 0.61% | still open |
| December 9, 2014 | Blackrock Institutional Trust Company, National Association | 0.58% | still open |
| December 9, 2014 | Bluecrest Capital Management Limited | 0.50% | still open |
| October 30, 2014 | Blackrock Institutional Trust Company, National Association | 0.61% | still open |
| September 24, 2014 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| February 26, 2014 | Blackrock Institutional Trust Company, National Association | 0.47% | still open |
| February 12, 2014 | Blackrock Institutional Trust Company, National Association | 0.56% | still open |
| January 22, 2014 | Blackrock Institutional Trust Company, National Association | 0.67% | still open |
| January 9, 2014 | Blackrock Institutional Trust Company, National Association | 0.79% | still open |
| December 12, 2013 | Blackrock Institutional Trust Company, National Association | 0.89% | still open |
| December 3, 2013 | Blackrock Institutional Trust Company, National Association | 0.97% | still open |
| November 21, 2013 | Blackrock Institutional Trust Company, National Association | 1.00% | still open |
| November 13, 2013 | Blackrock Institutional Trust Company, National Association | 0.99% | still open |
| November 8, 2013 | Blackrock Institutional Trust Company, National Association | 1.00% | still open |
| October 29, 2013 | Blackrock Institutional Trust Company, National Association | 0.91% | still open |
| October 22, 2013 | Blackrock Institutional Trust Company, National Association | 0.81% | still open |
| October 15, 2013 | Blackrock Institutional Trust Company, National Association | 0.70% | still open |
| September 19, 2013 | Blackrock Institutional Trust Company, National Association | 0.69% | still open |
| September 11, 2013 | Blackrock Institutional Trust Company, National Association | 0.71% | still open |
| September 9, 2013 | Blackrock Institutional Trust Company, National Association | 0.61% | still open |
| August 13, 2013 | Blackrock Institutional Trust Company, National Association | 0.50% | still open |
| January 24, 2013 | Blackrock Institutional Trust Company, National Association | 0.39% | still open |
| January 14, 2013 | Blackrock Institutional Trust Company, National Association | 0.56% | still open |
| November 28, 2012 | Blackrock Institutional Trust Company, National Association | 0.65% | still open |
| November 9, 2012 | Blackrock Institutional Trust Company, National Association | 0.75% | still open |
| November 1, 2012 | Blackrock Institutional Trust Company, National Association | 0.92% | still open |