Institutional investors hold a majority ownership of BIIB through the 92.16% 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 December 2014, these large investors purchased a net $2.0 million shares.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
WELLINGTON MANAGEMENT CO. LLP Bought 1.0 Million shares of Biogen
CAPITAL RESEARCH & MANAGEMENT CO... Bought 930.0 Thousand shares of Biogen
FIDELITY MANAGEMENT & RESEARCH C... Bought 787.1 Thousand shares of Biogen