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BATS BZX Real-Time Price
As of 9:48am ET
 -0.94 / -0.79%
Today’s Change
Today|||52-Week Range
Institutional investors purchased a net $1.6 million shares of TSRO during the quarter ended June 2017 and now own 87.54% of the total shares outstanding. This majority interest is a greater percentage than is typical for companies in the Biotechnology industry and highlights that the smart money sees this stock as an important holding.
Mutual fund holders60.25%
Individual stakeholders30.47%
Other institutional27.29%

Largest Quarterly Institutional

Latest Institutional Activity

7/31/2017WELLINGTON MANAGEMENT CO. LLP  Bought 993.5 Thousand shares of TESARO Inc
6/30/2017HENDERSON GLOBAL INVESTORS LTD.  Bought 717.2 Thousand shares of TESARO Inc
6/30/2017POINTSTATE CAPITAL LP  Bought 614.7 Thousand shares of TESARO Inc

Top 10 Owners of TESARO Inc

Total value ($)Shares
bought / sold
Fidelity Management & Research Co...13.20%7,150,662923,436,491-351,549-4.69%
Wellington Management Co. LLP11.34%6,141,154793,068,628+993,469+19.30%
T. Rowe Price Associates, Inc.7.96%4,313,592557,057,271-501,143-10.41%
The Vanguard Group, Inc.5.50%2,978,236384,609,397+62,104+2.13%
BlackRock Fund Advisors4.25%2,303,502297,474,248-298,411-11.47%
Franklin Advisers, Inc.3.46%1,874,746242,104,698-563,072-23.10%
SSgA Funds Management, Inc.2.16%1,168,913150,953,425+177,057+17.85%
Oracle Investment Management, Inc...1.94%1,052,579135,930,052+31,104+3.05%
Bellevue Asset Management AG1.66%896,990115,837,289+56,408+6.71%
Henderson Global Investors Ltd.1.32%717,15092,612,751+717,150--

Top 10 Mutual Funds Holding TESARO Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Fidelity OTC Portfolio3.58%1,941,500250,725,31000.00%
T Rowe Price Health Sciences Fund2.42%1,308,810169,019,723-547,526-29.49%
BB Biotech AG2.13%1,154,582149,102,719-75,000-6.10%
T Rowe Price New Horizons Fund1.93%1,043,163134,714,070-536,599-33.97%
Vanguard Health Care Fund1.90%1,027,035132,631,300+384,310+59.79%
Fidelity Select Biotechnology Por...1.76%950,807122,787,216-21,700-2.23%
Hartford Mid Cap Fund1.63%883,717114,123,213+30,930+3.63%
Vanguard Total Stock Market Index...1.62%877,442113,312,860+11,045+1.27%
Fidelity Contrafund1.56%845,400109,174,95600.00%
iShares Nasdaq Biotechnology ETF1.37%741,05795,700,10100.00%