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Hudson Bay Capital Management LP
> ALXN
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 09/30/2021 | ALEXION PHARMACEUTICALS, INC. | ALXN | 0 | -1,020,985 | 0 | -187,565,000 | |
| 06/30/2021 | ALEXION PHARMACEUTICALS, INC. | ALXN | 1,020,985 | 20,463 | 187,565,000 | 34,575,000 | $183.71 |
| 03/31/2021 | ALEXION PHARMACEUTICALS, INC. | ALXN | 1,000,522 | 636,422 | 152,990,000 | 96,103,000 | $152.91 |
| 12/31/2020 | ALEXION PHARMACEUTICALS, INC. | ALXN | 364,100 | 128,500 | 56,887,000 | 29,927,000 | $156.24 |
| 09/30/2020 | ALEXION PHARMACEUTICALS, INC. | ALXN | 235,600 | -6,400 | 26,960,000 | -202,000 | $114.43 |
| 06/30/2020 | ALEXION PHARMACEUTICALS, INC. | ALXN | 242,000 | 42,000 | 27,162,000 | 9,204,000 | $112.24 |
| 03/31/2020 | ALEXION PHARMACEUTICALS, INC. | ALXN | 200,000 | 6,300 | 17,958,000 | -2,991,000 | $89.79 |
| 12/31/2019 | ALEXION PHARMACEUTICALS, INC. | ALXN | 193,700 | 28,700 | 20,949,000 | 4,789,000 | $108.15 |
| 09/30/2019 | ALEXION PHARMACEUTICALS, INC. | ALXN | 165,000 | 110,000 | 16,160,000 | 8,956,000 | $97.94 |
| 06/30/2019 | ALEXION PHARMACEUTICALS, INC. | ALXN | 55,000 | 30,000 | 7,204,000 | 3,824,000 | $130.98 |
| 03/31/2019 | ALEXION PHARMACEUTICALS, INC. | ALXN | 25,000 | -61,400 | 3,380,000 | -5,032,000 | $135.20 |
| 12/31/2018 | ALEXION PHARMACEUTICALS, INC. | ALXN | 86,400 | 26,200 | 8,412,000 | 44,000 | $97.36 |
| 09/30/2018 | ALEXION PHARMACEUTICALS, INC. | ALXN | 60,200 | 30,200 | 8,368,000 | 4,643,000 | $139.00 |
| 06/30/2018 | ALEXION PHARMACEUTICALS, INC. | ALXN | 30,000 | -30,000 | 3,725,000 | -2,963,000 | $124.17 |
| 03/31/2018 | ALEXION PHARMACEUTICALS, INC. | ALXN | 60,000 | -10,000 | 6,688,000 | -1,683,000 | $111.47 |
| 12/31/2017 | ALEXION PHARMACEUTICALS, INC. | ALXN | 70,000 | 30,000 | 8,371,000 | 2,759,000 | $119.59 |
| 09/30/2017 | ALEXION PHARMACEUTICALS, INC. | ALXN | 40,000 | -30,000 | 5,612,000 | -2,905,000 | $140.30 |
| 06/30/2017 | ALEXION PHARMACEUTICALS, INC. | ALXN | 70,000 | -75,000 | 8,517,000 | 8,499,420 | $121.67 |
| 03/31/2017 | ALEXION PHARMACEUTICALS, INC. | ALXN | 145,000 | 40,000 | 17,580 | -12,829,420 | $0.12 |
| 12/31/2016 | ALEXION PHARMACEUTICALS, INC. | ALXN | 105,000 | 105,000 | 12,847,000 | 12,847,000 | $122.35 |
| 09/30/2014 | ALEXION PHARMACEUTICALS, INC. | ALXN | 0 | -40,000 | 0 | -6,250,000 | |
| 06/30/2014 | ALEXION PHARMACEUTICALS, INC. | ALXN | 40,000 | -35,000 | 6,250,000 | -5,160,000 | $156.25 |
| 03/31/2014 | ALEXION PHARMACEUTICALS, INC. | ALXN | 75,000 | 75,000 | 11,410,000 | 11,410,000 | $152.13 |
| 12/31/2013 | ALEXION PHARMACEUTICALS, INC. | ALXN | 78,700 | 78,700 | 10,472,000 | 10,472,000 | $133.06 |
| 09/30/2013 | ALEXION PHARMACEUTICALS, INC. | ALXN | 177,839 | 177,839 | 20,658,000 | 20,658,000 | $116.16 |
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