ALEXION PHARMACEUTICALS INC

CUSIP: 01535110 Class: COM

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

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

Q2 2016
Shares 18,300 Value ($000) $2,137 Avg Close — Range —
Q3 2014
Shares 207,571 Value ($000) $34,419 Avg Close — Range —
Q2 2014
Shares 75,467 Value ($000) $11,792 Avg Close — Range —
Q1 2014
Shares 56,839 Value ($000) $8,647 Avg Close — Range —
Q2 2013
Shares 351,868 Value ($000) $32,456 Avg Close — Range —