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    Tesaro, Inc. (TSRO)

    -NasdaqGS
    57.40 Down 0.26(0.45%) 4:00PM EDT
    |After Hours : 57.40 Down 0.00 (0.01%) 4:39PM EDT
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    Major HoldersGet Major Holders for:
    Breakdown
    % of Shares Held by All Insider and 5% Owners:16%
    % of Shares Held by Institutional & Mutual Fund Owners:89%
    % of Float Held by Institutional & Mutual Fund Owners:106%
    Number of Institutions Holding Shares:103

    Major Direct Holders (Forms 3 & 4)
    HolderSharesReported
    MOTT DAVID M8,677Jun 2, 2014
    BARRIS PETER JN/AJun 5, 2013
    KERINS PATRICK J829Jun 4, 2013
    VISWANATHAN RAVIN/AJun 4, 2013
    KOLLURI KRISHNA KITTUN/AJun 27, 2013


    Top Institutional Holders
    HolderShares% OutValue*Reported
    Price (T.Rowe) Associates Inc2,530,5397.0194,110,745Dec 31, 2014
    AllianceBernstein, L.P.1,346,4993.7350,076,297Dec 31, 2014
    Orbimed Advisors LLC.1,330,0003.6849,462,700Dec 31, 2014
    FMR, LLC1,225,8943.3945,590,997Dec 31, 2014
    NEA Management Company, LLC9,854,25527.29366,479,743Dec 31, 2014
    Healthcor Management LP1,050,0002.9139,049,500Dec 31, 2014
    Vanguard Group, Inc. (The)976,1452.7036,302,832Dec 31, 2014
    Perceptive Advisors LLC883,3592.4532,852,121Dec 31, 2014
    Millennium Management LLC777,0732.1528,899,344Dec 31, 2014
    Wellington Management Company, LLP5,022,32313.91186,780,192Dec 31, 2014

    Top Mutual Fund Holders
    HolderShares% OutValue*Reported
    Price (T.Rowe) Health Sciences Fund1,131,8383.1342,093,055Dec 31, 2014
    Fidelity Select Portfolios - Biotechnology1,072,1152.9743,131,186Jan 31, 2015
    Vanguard Explorer Fund, Inc.838,8082.3223,335,638Oct 31, 2014
    Goldman Sachs Small Cap Value Fund538,7961.4918,593,849Nov 30, 2014
    SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF531,8161.4721,394,957Jan 31, 2015
    Price (T.Rowe) New Horizons Fund480,6811.3317,876,526Dec 31, 2014
    Vanguard Total Stock Market Index Fund392,1111.0914,582,608Dec 31, 2014
    Hartford Small Company HLS Fund, Inc.327,0000.9112,161,130Dec 31, 2014
    Price (T.Rowe) Small Cap Stock Fund320,7000.8911,926,833Dec 31, 2014
    iShares Russell 2000 ETF313,8950.8712,627,995Jan 31, 2015

    View Transactions for Insiders & Institutional Holders

    Value shown is computed using the security's price on the report date given.

    Currency in USD.