During the Trading Day
37.83 +0.26 / +0.69%
Data as of 3:59pm ET
Day’s Change
During After-Hours   Switch to standard view »
37.83 0.00 / 0.00%
Volume: 1.8K
Institutional investors purchased a net $1.8 million shares of TSRO during the quarter ended September 2014, and now own 66.11% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Individual stakeholders45.12%
Mutual fund holders40.76%
Other institutional25.36%

Largest Quarterly Institutional

Latest Institutional Activity

9/30/2014LOOMIS, SAYLES & CO. LP  Bought 474.1 Thousand shares of TESARO Inc
9/30/2014WELLINGTON MANAGEMENT CO. LLP  Bought 429.2 Thousand shares of TESARO Inc
9/30/2014MILLENNIUM MANAGEMENT LLC  Bought 377.7 Thousand shares of TESARO Inc

Top 10 Owners of TESARO Inc

Total value ($)Shares
bought / sold
Wellington Management Co. LLP13.27%4,789,067165,270,702+429,236+9.85%
T. Rowe Price Associates, Inc.6.78%2,446,13984,416,257-28,200-1.14%
AllianceBernstein LP3.99%1,438,48649,642,152+60,816+4.41%
Fidelity Management & Research Co...3.40%1,225,89442,305,60200.00%
HealthCor Management LP3.32%1,198,79541,370,415-276,205-18.73%
The Vanguard Group, Inc.2.42%874,01430,162,223+45,788+5.53%
Goldman Sachs Asset Management LP2.42%872,26530,101,865+289,078+49.57%
BlackRock Fund Advisors2.39%863,92829,814,155-9,861-1.13%
SSgA Funds Management, Inc.2.15%776,86326,809,542+30,116+4.03%
Perceptive Advisors LLC1.96%708,28424,442,881+71,328+11.20%

Top 10 Mutual Funds Holding TESARO Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Fidelity Select Biotechnology Por...2.97%1,072,11536,998,68900.00%
T Rowe Price Health Sciences Fund2.94%1,062,23836,657,833-2,800-0.26%
Vanguard Explorer Fund2.32%838,80828,947,264-900-0.11%
BB Biotech AG1.95%704,58224,315,12500.00%
Goldman Sachs Small Cap Value Fun...1.68%606,52520,931,178+217,924+56.08%
FTIF SICAV - Franklin Biotechnolo...1.51%546,20018,849,36200.00%
SPDR S&P Biotech ETF1.46%525,67918,141,182-17,324-3.19%
T Rowe Price New Horizons Fund1.33%478,78116,522,732-29,000-5.71%
Vanguard Total Stock Market Index...0.90%325,45711,231,52100.00%
T Rowe Price Small Cap Stock Fund0.89%322,20011,119,122-11,300-3.39%

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