Data as of Jul 31
 0.00 / 0.00%
Today’s Change
Today|||52-Week Range
Institutional investors purchased a net $4.7 million shares of TSRO during the quarter ended March 2014, and now own 60.23% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Individual stakeholders45.24%
Mutual fund holders31.91%
Other institutional28.33%

Largest Quarterly Institutional

Latest Institutional Activity

6/30/2014TFS CAPITAL LLC  Bought 24.0 Thousand shares of TESARO Inc
5/30/2014CREDIT SUISSE AG  Bought 571.00 shares of TESARO Inc
6/30/2014QUANTBOT TECHNOLOGIES LLC  Sold 1.9 Thousand shares of TESARO Inc

Top 10 Owners of TESARO Inc

Total value ($)Shares
bought / sold
Wellington Management Co. LLP10.30%3,707,235115,332,081+370,968+11.12%
T. Rowe Price Associates, Inc.4.92%1,772,15355,131,680-27,800-1.54%
HealthCor Management LP3.89%1,400,00043,554,000+1,400,000--
Fidelity Management & Research Co...3.68%1,325,19441,226,785+328,400+32.95%
AllianceBernstein LP3.55%1,277,30539,736,959+839,194+191.55%
Perceptive Advisors LLC3.42%1,230,07038,267,478-216,500-14.97%
OrbiMed Advisors LLC2.36%847,80026,375,058+847,800--
The Vanguard Group, Inc.2.26%814,88925,351,197+193,817+31.21%
Franklin Advisers, Inc.2.22%800,30024,897,333+214,300+36.57%
BlackRock Fund Advisors2.13%767,59523,879,880+132,346+20.83%

Top 10 Mutual Funds Holding TESARO Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Fidelity Select Biotechnology Por...2.98%1,072,11533,353,49800.00%
T Rowe Price Health Sciences Fund2.76%994,13830,927,63300.00%
BB Biotech AG1.68%604,58218,808,546+133,300+28.28%
Vanguard Explorer Fund1.67%600,00018,666,000+69,850+13.18%
FTIF SICAV - Franklin Biotechnolo...1.52%546,20016,992,282+191,300+53.90%
SPDR S&P Biotech ETF1.35%486,97315,149,730+100,096+25.87%
Goldman Sachs Small Cap Value Fun...1.08%388,60112,089,377+388,601--
T Rowe Price New Horizons Fund1.05%378,78111,783,877-23,900-5.94%
Vanguard Total Stock Market Index...0.87%313,1529,742,15900.00%
iShares Russell 2000 ETF0.79%285,2078,872,790+66,873+30.63%

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