ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

D. E. Shaw & Co., Inc.'s Holding History (CIK: 0001009207)

Note: Option positions (PUT/CALL) are excluded.

Q2 2021
Shares 1,241,928 Value ($000) $228,154 Avg Close — Range —
Q1 2021
Shares 1,079,085 Value ($000) $165,003 Avg Close — Range —
Q4 2020
Shares 833,550 Value ($000) $130,234 Avg Close — Range —
Q3 2020
Shares 774,340 Value ($000) $88,608 Avg Close — Range —
Q2 2020
Shares 316,349 Value ($000) $35,507 Avg Close — Range —
Q1 2020
Shares 736,153 Value ($000) $66,099 Avg Close — Range —
Q4 2019
Shares 884,209 Value ($000) $95,627 Avg Close — Range —
Q3 2019
Shares 1,636,801 Value ($000) $160,309 Avg Close — Range —
Q2 2019
Shares 264,414 Value ($000) $34,633 Avg Close — Range —
Q1 2019
Shares 162,459 Value ($000) $21,961 Avg Close — Range —
Q4 2018
Shares 854,723 Value ($000) $83,216 Avg Close — Range —
Q3 2018
Shares 524,006 Value ($000) $72,842 Avg Close — Range —
Q2 2018
Shares 591,891 Value ($000) $73,483 Avg Close — Range —
Q1 2018
Shares 650,363 Value ($000) $72,489 Avg Close — Range —
Q4 2017
Shares 350,834 Value ($000) $41,956 Avg Close — Range —
Q3 2017
Shares 115,759 Value ($000) $16,240 Avg Close — Range —
Q2 2017
Shares 289,584 Value ($000) $35,234 Avg Close — Range —
Q3 2016
Shares 41,144 Value ($000) $5,042 Avg Close — Range —
Q2 2016
Shares 191,793 Value ($000) $22,394 Avg Close — Range —
Q1 2016
Shares 199,525 Value ($000) $27,778 Avg Close — Range —
Q4 2015
Shares 358,241 Value ($000) $68,334 Avg Close — Range —
Q3 2015
Shares 488,469 Value ($000) $76,392 Avg Close — Range —
Q2 2015
Shares 326,566 Value ($000) $59,033 Avg Close — Range —
Q1 2015
Shares 21,659 Value ($000) $3,754 Avg Close — Range —
Q4 2014
Shares 157,082 Value ($000) $29,065 Avg Close — Range —
Q3 2014
Shares 60,909 Value ($000) $10,100 Avg Close — Range —
Q2 2014
Shares 173,854 Value ($000) $27,164 Avg Close — Range —
Q1 2014
Shares 202,538 Value ($000) $30,812 Avg Close — Range —
Q3 2013
Shares 83,653 Value ($000) $9,717 Avg Close — Range —
Q2 2013
Shares 126,871 Value ($000) $11,703 Avg Close — Range —