During the Trading Day
62.48 +1.87 / +3.09%
As of 3:59pm ET
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62.48 0.00 / 0.00%
Volume: 2.0K
Institutional investors purchased a net $4.9 million shares of TSRO during the quarter ended March 2015, and now own 76.40% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Mutual fund holders50.86%
Individual stakeholders36.16%
Other institutional25.54%

Largest Quarterly Institutional

Latest Institutional Activity

6/30/2015TEACHER RETIREMENT SYSTEM OF TEX...  Bought 60.8 Thousand shares of TESARO Inc
6/30/2015ADVENT CAPITAL MANAGEMENT LLC  Bought 4.1 Thousand shares of TESARO Inc
5/29/2015CANDRIAM BELGIUM SA  Bought 4.0 Thousand shares of TESARO Inc

Top 10 Owners of TESARO Inc

Total value ($)Shares
bought / sold
Fidelity Management & Research Co...9.34%3,734,411219,546,023+2,508,517+204.63%
T. Rowe Price Associates, Inc.8.85%3,538,524208,029,826+1,007,985+39.83%
Wellington Management Co. LLP8.74%3,495,847205,520,845-768,857-18.03%
OrbiMed Advisors LLC5.14%2,057,700120,972,183+727,700+54.71%
The Vanguard Group, Inc.3.96%1,582,46593,033,117+606,320+62.11%
BlackRock Fund Advisors3.52%1,408,15382,785,315+349,551+33.02%
AllianceBernstein LP2.78%1,110,95165,312,809-235,548-17.49%
Perceptive Advisors LLC2.45%978,35957,517,726+95,000+10.75%
HealthCor Management LP2.31%925,00054,380,750-125,000-11.90%
Bellevue Asset Management AG2.16%864,88250,846,413+160,300+22.75%

Top 10 Mutual Funds Holding TESARO Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Fidelity Select Biotechnology Por...5.37%2,149,849126,389,623+60,482+2.89%
T Rowe Price Health Sciences Fund3.60%1,439,93784,653,896+308,099+27.22%
Fidelity Select Health Care Portf...2.35%940,00055,262,60000.00%
BB Biotech AG2.14%854,58250,240,876+150,000+21.29%
T Rowe Price New Horizons Fund1.96%784,24146,105,528+303,560+63.15%
Vanguard Explorer Fund1.43%570,93733,565,386-244,991-30.03%
Vanguard Small Cap Index Fund1.23%492,41128,948,843+13,760+2.87%
SPDR S&P Biotech ETF1.17%467,35127,475,565+65,969+16.44%
Fidelity OTC Portfolio1.16%465,80027,384,382-7,900-1.67%
Lord Abbett Developing Growth Fun...1.15%459,46927,012,183+459,469--

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