Institutional investors purchased a net $169.4 thousand shares of TSRO during the quarter ended June 2015, and now own 81.93% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
FIDELITY MANAGEMENT & RESEARCH C... Bought 516.6 Thousand shares of TESARO Inc