Data as of Apr 17
 -0.51 / -2.00%
Today’s Change
Today|||52-Week Range
Institutional investors purchased a net $271.4 thousand shares of TSRO during the quarter ended December 2013, and now own 47.00% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Individual stakeholders48.03%
Mutual fund holders26.69%
Other institutional20.31%

Largest Quarterly Institutional

Latest Institutional Activity

3/31/2014TEACHERS RETIREMENT SYSTEM OF TH...  Sold 920.00 shares of TESARO Inc

Top 10 Owners of TESARO Inc

Total value ($)Shares
bought / sold
Wellington Management Co. LLP9.28%3,336,26798,353,151+147,391+4.62%
T. Rowe Price Associates, Inc.5.00%1,799,95353,062,614+114,800+6.81%
Perceptive Advisors LLC4.02%1,446,57042,644,884-67,074-4.43%
Fidelity Management & Research Co...2.77%996,79429,385,487-682,777-40.65%
Oracle Investment Management, Inc...2.14%768,21922,647,096+91,107+13.46%
RA Capital Management LLC1.95%700,00020,636,000+700,000--
BlackRock Fund Advisors1.77%635,24918,727,141+17,287+2.80%
The Vanguard Group, Inc.1.73%621,07218,309,203+23,144+3.87%
Adage Capital Management LP1.66%597,90017,626,092+222,266+59.17%
Franklin Advisers, Inc.1.63%586,00017,275,280+122,800+26.51%

Top 10 Mutual Funds Holding TESARO Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Fidelity Select Biotechnology Por...3.23%1,160,01534,197,24200.00%
T Rowe Price Health Sciences Fund2.76%994,13829,307,188+121,419+13.91%
Vanguard Explorer Fund1.47%530,15015,628,822+530,150--
SPDR S&P Biotech ETF1.33%476,51814,047,751+38,164+8.71%
BB Biotech AG1.31%471,28213,893,393+471,282--
T Rowe Price New Horizons Fund1.12%402,68111,871,036+46,800+13.15%
FTIF SICAV - Franklin Biotechnolo...0.99%354,90010,462,452+82,800+30.43%
Vanguard Total Stock Market Index...0.84%300,4088,856,02800.00%
iShares Russell 2000 ETF0.70%250,9747,398,714+34,969+16.19%
Hartford Small Company HLS Fund0.65%234,1436,902,536+41,605+21.61%

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