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BATS BZX Real-Time Price
As of 2:42pm ET
 -3.73 / -4.02%
Today’s Change
Today|||52-Week Range
Institutional investors purchased a net $701.8 thousand shares of TSRO during the quarter ended June 2016. This may signal that the smart money is gaining interest in this company as the 71.83% of the shares outstanding that institutional investors hold is among the lowest in the Biotechnology industry.
Mutual fund holders49.95%
Individual stakeholders34.30%
Other institutional21.89%

Largest Quarterly Institutional

Latest Institutional Activity

6/30/2016PASSPORT CAPITAL LLC  Bought 734.3 Thousand shares of TESARO Inc
6/30/2016FIDELITY MANAGEMENT & RESEARCH C...  Bought 566.3 Thousand shares of TESARO Inc
6/30/2016T. ROWE PRICE ASSOCIATES, INC.  Bought 423.5 Thousand shares of TESARO Inc

Top 10 Owners of TESARO Inc

Total value ($)Shares
bought / sold
Fidelity Management & Research Co...11.67%5,842,099544,717,311+566,278+10.73%
T. Rowe Price Associates, Inc.9.60%4,807,570448,257,827+423,466+9.66%
Wellington Management Co. LLP6.70%3,354,159312,741,785-850,318-20.22%
The Vanguard Group, Inc.4.43%2,216,739206,688,744+219,902+11.01%
BlackRock Fund Advisors4.23%2,119,006197,576,119+126,774+6.36%
Bellevue Asset Management AG2.31%1,154,582107,653,226-75,000-6.10%
Perceptive Advisors LLC2.28%1,143,615106,630,663+44,956+4.09%
SSgA Funds Management, Inc.2.02%1,008,66794,048,111+114,918+12.86%
Putnam Investment Management LLC1.65%824,24076,852,138+100,509+13.89%
Jennison Associates LLC1.62%810,12475,535,962-139,366-14.68%

Top 10 Mutual Funds Holding TESARO Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
T Rowe Price Health Sciences Fund3.87%1,939,223180,813,153+156,474+8.78%
Fidelity OTC Portfolio3.04%1,523,641142,064,287+1,061,641+229.79%
Fidelity Select Biotechnology Por...2.61%1,308,049121,962,489+184,526+16.42%
T Rowe Price New Horizons Fund2.44%1,223,377114,067,671+167,346+15.85%
BB Biotech AG2.31%1,154,582107,653,226-75,000-6.10%
Fidelity Select Health Care Portf...1.40%700,00065,268,000-50,000-6.67%
Vanguard Total Stock Market Index...1.31%655,60761,128,797+54,133+9.00%
Prudential Jennison Health Scienc...1.25%628,49058,600,40800.00%
Vanguard Small Cap Index Fund1.24%620,21357,828,660+41,356+7.14%
iShares Nasdaq Biotechnology ETF1.24%619,18657,732,903-4,708-0.75%