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    Arrowhead Research Corp. (ARWR)

    -NasdaqGS
    6.26 Up 0.10(1.62%) May 22, 4:00PM EDT
    |After Hours : 6.26 0.00 (0.00%) May 22, 4:25PM EDT
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    Major HoldersGet Major Holders for:
    Breakdown
    % of Shares Held by All Insider and 5% Owners:6%
    % of Shares Held by Institutional & Mutual Fund Owners:76%
    % of Float Held by Institutional & Mutual Fund Owners:81%
    Number of Institutions Holding Shares:113

    Major Direct Holders (Forms 3 & 4)
    HolderSharesReported
    ANZALONE CHRISTOPHER RICHARD620,173Mar 4, 2015
    GIVEN BRUCE D275,000Mar 4, 2015
    MYSZKOWSKI KENNETH ALLEN121,500Mar 4, 2015
    GIVEN DOUGLAS B55,000Mar 4, 2015
    FRYKMAN EDWARD W48,852Mar 4, 2015


    Top Institutional Holders
    HolderShares% OutValue*Reported
    JP Morgan Chase & Company3,268,5045.4922,111,429Mar 31, 2015
    Oppenheimer Funds, Inc.3,000,0005.0420,295,000Mar 31, 2015
    Bridger Management LLC2,976,1835.0020,133,877Mar 31, 2015
    RTW Investments LLC2,410,0004.0516,303,650Mar 31, 2015
    Millennium Management LLC2,205,3573.7114,919,240Mar 31, 2015
    QVT Financial LP2,101,5103.5314,216,715Mar 31, 2015
    Vanguard Group, Inc. (The)1,820,9523.0612,318,740Mar 31, 2015
    BlackRock Institutional Trust Company, N.A.1,691,2132.8411,441,055Mar 31, 2015
    BlackRock Fund Advisors1,538,6202.5910,408,764Mar 31, 2015
    Baker Brothers Advisors, LLC1,290,1872.178,728,115Mar 31, 2015

    Top Mutual Fund Holders
    HolderShares% OutValue*Reported
    Oppenheimer Global Opportunities Fund3,000,0005.0422,140,000Dec 31, 2014
    Fidelity Select Portfolios - Biotechnology1,044,2901.767,064,621Mar 31, 2015
    iShares Russell 2000 ETF935,8071.576,330,734Mar 31, 2015
    Vanguard Total Stock Market Index Fund896,1661.516,613,705Dec 31, 2014
    JP Morgan Small Cap Growth Fund513,1210.863,471,263Mar 31, 2015
    Vanguard Extended Market Index Fund494,9900.833,653,026Dec 31, 2014
    iShares Russell 2000 Growth ETF433,9830.732,935,894Mar 31, 2015
    Columbia Fds Ser Tr I-Columbia Small Cap Growth Fd I421,0000.712,450,220Nov 30, 2014
    College Retirement Equities Fund-Stock Account250,6290.421,849,642Dec 31, 2014
    JP Morgan Dynamic Small Cap Fund235,3490.401,592,135Mar 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.