Institutional investors hold a majority ownership of IMGN through the 92.76% 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 2015, these large investors purchased a net $2.9 million shares.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
MILLENNIUM MANAGEMENT LLC Bought 3.0 Million shares of ImmunoGen Inc
INVESCO POWERSHARES CAPITAL MANA... Bought 1.7 Million shares of ImmunoGen Inc
BAKER BROS. ADVISORS LP Bought 1.3 Million shares of ImmunoGen Inc