Institutional investors purchased a net $1.3 million shares of TSRO during the quarter ended September 2013, and now own 51.43% 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
PERCEPTIVE ADVISORS LLC Bought 593.2 Thousand shares of TESARO Inc
COLUMBUS CIRCLE INVESTORS Bought 579.2 Thousand shares of TESARO Inc
SSGA FUNDS MANAGEMENT, INC. Bought 527.1 Thousand shares of TESARO Inc