ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q2 2021
Shares 1,002,319 Value ($000) $184,136 Avg Close — Range —
Q1 2021
Shares 82,600 Value ($000) $12,630 Avg Close — Range —
Q2 2020
Shares 10,508 Value ($000) $1,179 Avg Close — Range —
Q1 2020
Shares 312,157 Value ($000) $28,029 Avg Close — Range —
Q4 2019
Shares 114,500 Value ($000) $12,383 Avg Close — Range —
Q2 2019
Shares 13,300 Value ($000) $1,742 Avg Close — Range —
Q4 2018
Shares 203,200 Value ($000) $19,784 Avg Close — Range —
Q2 2018
Shares 701,814 Value ($000) $87,131 Avg Close — Range —
Q1 2018
Shares 474,114 Value ($000) $52,845 Avg Close — Range —
Q4 2017
Shares 310,900 Value ($000) $37,181 Avg Close — Range —
Q3 2017
Shares 28,000 Value ($000) $3,928 Avg Close — Range —
Q2 2017
Shares 48,700 Value ($000) $5,925 Avg Close — Range —
Q1 2017
Shares 29,700 Value ($000) $3,601 Avg Close — Range —