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    bluebird bio, Inc. (BLUE)

    -NasdaqGS
    92.91 Down 5.55(5.64%) Jan 30, 4:00PM EST
    |After Hours : 93.50 Up 0.59 (0.64%) Jan 30, 7:00PM EST
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    Major HoldersGet Major Holders for:
    Breakdown
    % of Shares Held by All Insider and 5% Owners:20%
    % of Shares Held by Institutional & Mutual Fund Owners:66%
    % of Float Held by Institutional & Mutual Fund Owners:83%
    Number of Institutions Holding Shares:100

    Major Direct Holders (Forms 3 & 4)
    HolderSharesReported
    TVM V LIFE SCIENCE VENTURES GMBH & CO KG2,254,357Jun 24, 2013
    POLACK AXELN/AJun 24, 2013
    ARCH VENTURE FUND VII LP1,793,588Jun 24, 2013
    TEPPER ROBERT I26,538Sep 12, 2014
    THIRD ROCK VENTURES LP1,215,054Sep 12, 2014


    Top Institutional Holders
    HolderShares% OutValue*Reported
    Deerfield Management1,258,6874.3745,161,689Sep 30, 2014
    Third Rock Ventures, LLC1,215,0544.22111,444,752Dec 31, 2014
    Price (T.Rowe) Associates Inc1,067,2713.7038,293,683Sep 30, 2014
    BlackRock Fund Advisors866,6163.0131,094,182Sep 30, 2014
    State Street Corporation742,5902.5826,644,129Sep 30, 2014
    RA Capital Management, LLC728,8122.5326,149,774Sep 30, 2014
    Vanguard Group, Inc. (The)627,6732.1822,520,907Sep 30, 2014
    Jennison Associates LLC619,3282.1522,221,488Sep 30, 2014
    FMR, LLC4,285,26914.87153,755,451Sep 30, 2014
    Capital Research Global Investors3,502,91512.15125,684,590Sep 30, 2014

    Top Mutual Fund Holders
    HolderShares% OutValue*Reported
    Smallcap World Fund2,287,5657.9482,077,832Sep 30, 2014
    Fidelity Growth Company Fund2,099,7567.2986,572,939Nov 30, 2014
    American Funds Insurance Ser-Global Small Capitalization Fun1,215,3504.2243,606,758Sep 30, 2014
    Fidelity Series Growth Company Fund511,3501.7721,082,960Nov 30, 2014
    Prudential Jennison Health Sciences Fd441,1121.5318,187,047Nov 30, 2014
    Price (T.Rowe) Health Sciences Fund435,5001.5115,625,740Sep 30, 2014
    SPDR (R) Ser Tr-SPDR (R) S&P (R) Biotech ETF421,5171.4617,379,145Nov 30, 2014
    iShares NASDAQ Biotechnology ETF371,1281.2915,301,607Nov 30, 2014
    iShares Russell 2000 ETF351,5251.2214,493,375Nov 30, 2014
    Vanguard Total Stock Market Index Fund321,6631.1211,541,268Sep 30, 2014

    View Transactions for Insiders & Institutional Holders

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

    Currency in USD.