| May 31, 2018 | Paloma Partners Management Company | 0.00% | still open |
| May 30, 2018 | Millennium International Management LP | 1.88% | still open |
| May 29, 2018 | Millennium International Management LP | 1.74% | still open |
| May 25, 2018 | Millennium International Management LP | 1.61% | still open |
| May 24, 2018 | Millennium International Management LP | 1.50% | still open |
| May 23, 2018 | Millennium International Management LP | 1.41% | still open |
| May 22, 2018 | Millennium International Management LP | 1.29% | still open |
| May 22, 2018 | AQR Capital Management, LLC | 0.79% | still open |
| May 18, 2018 | Millennium International Management LP | 1.14% | still open |
| May 18, 2018 | Pictet Asset Management S.A. | 0.73% | still open |
| May 17, 2018 | Millennium International Management LP | 1.06% | still open |
| May 15, 2018 | Millennium International Management LP | 0.90% | still open |
| May 15, 2018 | Pictet Asset Management S.A. | 0.80% | still open |
| May 9, 2018 | Millennium International Management LP | 0.80% | still open |
| May 4, 2018 | Pictet Asset Management S.A. | 0.75% | still open |
| May 4, 2018 | Millennium International Management LP | 0.74% | still open |
| May 2, 2018 | Pictet Asset Management S.A. | 0.68% | still open |
| April 27, 2018 | Paloma Partners Management Company | 0.51% | still open |
| April 26, 2018 | Millennium International Management LP | 0.61% | still open |
| April 23, 2018 | Pictet Asset Management S.A. | 0.50% | still open |
| April 20, 2018 | Millennium International Management LP | 0.50% | still open |
| March 27, 2018 | AQR Capital Management, LLC | 0.80% | still open |
| March 13, 2018 | AQR Capital Management, LLC | 0.70% | still open |
| March 5, 2018 | Pictet Asset Management S.A. | 0.49% | still open |
| March 5, 2018 | Millennium International Management LP | 0.46% | still open |
| March 2, 2018 | Pictet Asset Management S.A. | 0.64% | still open |
| March 2, 2018 | Millennium International Management LP | 0.53% | still open |
| March 2, 2018 | Millennium Capital Partners LLP | 0.35% | still open |
| March 1, 2018 | Pictet Asset Management S.A. | 0.64% | still open |
| March 1, 2018 | Millennium International Management LP | 0.60% | still open |
| February 6, 2018 | Millennium International Management LP | 0.55% | still open |
| January 31, 2018 | Millennium International Management LP | 0.45% | still open |
| January 30, 2018 | Millennium Capital Partners LLP | 0.53% | still open |
| January 29, 2018 | Millennium International Management LP | 0.50% | still open |
| January 23, 2018 | Pictet Asset Management S.A. | 0.71% | still open |
| January 23, 2018 | Millennium Capital Partners LLP | 0.47% | still open |
| January 22, 2018 | Pictet Asset Management S.A. | 0.67% | still open |
| January 22, 2018 | Millennium International Management LP | 0.47% | still open |
| January 16, 2018 | Millennium Capital Partners LLP | 0.58% | still open |
| January 12, 2018 | Millennium Capital Partners LLP | 0.60% | still open |
| January 12, 2018 | Pictet Asset Management S.A. | 0.53% | still open |
| December 8, 2017 | Millennium International Management LP | 0.50% | still open |
| November 29, 2017 | Millennium Capital Partners LLP | 0.54% | still open |
| November 2, 2017 | Pictet Asset Management S.A. | 0.48% | still open |
| September 29, 2017 | Pictet Asset Management S.A. | 0.50% | still open |
| April 26, 2017 | AQR Capital Management, LLC | 0.68% | still open |
| April 11, 2017 | AQR Capital Management, LLC | 0.78% | still open |
| March 29, 2017 | AQR Capital Management, LLC | 0.89% | still open |
| March 3, 2017 | AQR Capital Management, LLC | 0.99% | still open |
| February 6, 2017 | Insight Investment Management (global) LTD | 0.47% | still open |