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    Boston Scientific Corporation (BSX)

    -NYSE
    17.83 Down 0.04(0.22%) May 22, 4:03PM EDT
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    Major HoldersGet Major Holders for:
    Breakdown
    % of Shares Held by All Insider and 5% Owners:1%
    % of Shares Held by Institutional & Mutual Fund Owners:88%
    % of Float Held by Institutional & Mutual Fund Owners:89%
    Number of Institutions Holding Shares:503

    Major Direct Holders (Forms 3 & 4)
    HolderSharesReported
    NICHOLAS PETER M3,475,182May 5, 2015
    MAHONEY MICHAEL F1,254,583Feb 28, 2015
    NICHOLAS NJ JRN/AFeb 19, 2014
    PRATT TIMOTHY A.322,893Feb 28, 2015
    MARIO ERNEST211,032May 18, 2015


    Top Institutional Holders
    HolderShares% OutValue*Reported
    Vanguard Group, Inc. (The)103,393,6647.711,835,237,536Mar 31, 2015
    Wellington Management Company, LLP73,738,8235.501,308,864,108Mar 31, 2015
    JP Morgan Chase & Company63,625,6994.751,129,356,157Mar 31, 2015
    Capital World Investors62,253,4954.641,104,999,536Mar 31, 2015
    State Street Corporation54,616,6684.07969,445,857Mar 31, 2015
    Primecap Management Company46,447,3493.46824,440,444Mar 31, 2015
    BlackRock Institutional Trust Company, N.A.34,885,4642.60619,216,986Mar 31, 2015
    FMR, LLC196,140,49114.633,481,493,715Mar 31, 2015
    JANUS CAPITAL MANAGEMENT, LLC26,480,4051.98470,027,188Mar 31, 2015
    Bollard Group LLC26,392,0091.97468,458,159Mar 31, 2015

    Top Mutual Fund Holders
    HolderShares% OutValue*Reported
    Vanguard Specialized-Health Care Fund59,624,8004.45883,043,288Jan 31, 2015
    Vanguard/Primecap Fund28,342,5602.11375,538,920Dec 31, 2014
    Fidelity Contrafund Inc26,694,5021.99473,827,410Mar 31, 2015
    Growth Fund Of America Inc25,921,0951.93460,099,436Mar 31, 2015
    Fidelity Select Portfolios - Health Care24,500,0001.83434,875,000Mar 31, 2015
    Vanguard Mid-Cap Index Fund23,677,0961.77313,721,522Dec 31, 2014
    Vanguard Total Stock Market Index Fund22,320,7881.66295,750,441Dec 31, 2014
    Fundamental Investors Inc20,000,0001.49355,000,000Mar 31, 2015
    Vanguard 500 Index Fund14,389,0221.07190,654,541Dec 31, 2014
    Vanguard Institutional Index Fund-Institutional Index Fund13,565,4191.01179,741,801Dec 31, 2014

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

    Currency in USD.