Institutional investors hold a majority ownership of ALXN through the 97.83% of the outstanding shares that they control. This interest is also higher than at almost any other company in the Biotechnology industry. Last, during the quarter ended June 2014, these large investors purchased a net $19.9 thousand shares.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
STATE TEACHERS RETIREMENT SYSTEM... Bought 182.4 Thousand shares of Alexion Pharmaceuticals I...
SMITH ASSET MANAGEMENT GROUP LP Bought 87.3 Thousand shares of Alexion Pharmaceuticals I...