SpiderRock Trading LLC - ALEXION PHARMACEUTICALS INC ownership

ALEXION PHARMACEUTICALS INC's ticker is and the CUSIP is 01535110. A total of 4 filers reported holding ALEXION PHARMACEUTICALS INC in Q2 2014. The put-call ratio across all filers is - and the average weighting 0.2%.

Quarter-by-quarter ownership
SpiderRock Trading LLC ownership history of ALEXION PHARMACEUTICALS INC
ValueSharesWeighting
Q1 2014$15,0002000.08%
Other shareholders
ALEXION PHARMACEUTICALS INC shareholders Q2 2014
NameSharesValueWeighting ↓
Telluride Asset Management LLC 2,870$448,0000.38%
Mizuho Trust & Banking Co., Ltd. 261,917$40,925,0000.15%
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 75,467$11,792,0000.06%
INGALLS & SNYDER LLC 4,000$625,0000.03%
View complete list of ALEXION PHARMACEUTICALS INC shareholders