Institutional investors purchased a net $2.1 million shares of TSRO during the quarter ended December 2014 and now own 72.51% of the total shares outstanding. This majority interest is a greater percentage than is typical for companies in the Biotechnology industry and highlights that the smart money sees this stock as an important holding.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
ORBIMED ADVISORS LLC Bought 1.3 Million shares of TESARO Inc