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    Thoratec Corp. (THOR)

    -NasdaqGS
    39.88 Down 0.37(0.92%) Mar 3, 4:00PM EST
    |Pre-Market : 39.88 5:10PM EST
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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:90%
    % of Float Held by Institutional & Mutual Fund Owners:91%
    Number of Institutions Holding Shares:249

    Major Direct Holders (Forms 3 & 4)
    HolderSharesReported
    BURBACH GERHARD F169,970Mar 17, 2014
    GROSSMAN D KEITH134,812Sep 22, 2014
    COLE J DANIEL46,597Dec 4, 2014
    LEHMAN DAVID AARON46,470Mar 17, 2014
    DIMICK NEIL F40,953May 27, 2014


    Top Institutional Holders
    HolderShares% OutValue*Reported
    Vanguard Group, Inc. (The)3,462,9096.45112,406,026Dec 31, 2014
    BlackRock Fund Advisors2,760,2705.1489,598,364Dec 31, 2014
    State Street Corporation1,972,0673.6764,013,294Dec 31, 2014
    Millennium Management LLC1,914,5393.5762,145,935Dec 31, 2014
    Manning & Napier Advisors LLC1,857,4403.4660,292,502Dec 31, 2014
    BlackRock Advisors, LLC1,737,5673.2456,401,424Dec 31, 2014
    Eagle Asset Management Inc1,653,1933.0853,662,644Dec 31, 2014
    BlackRock Institutional Trust Company, N.A.1,576,2942.9451,166,503Dec 31, 2014
    Invesco Ltd.1,251,8312.3340,634,434Dec 31, 2014
    Price (T.Rowe) Associates Inc6,183,36711.51200,712,092Dec 31, 2014

    Top Mutual Fund Holders
    HolderShares% OutValue*Reported
    Price (T.Rowe) Health Sciences Fund1,675,3003.1254,380,238Dec 31, 2014
    Price (T.Rowe) Small Cap Stock Fund998,8001.8632,421,048Dec 31, 2014
    Vanguard Small-Cap Index Fund977,9611.8226,140,897Sep 30, 2014
    iShares Russell 2000 ETF965,3491.8031,335,228Dec 31, 2014
    Vanguard Total Stock Market Index Fund916,5841.7124,500,290Sep 30, 2014
    Price (T.Rowe) Small-Cap Value Fund842,2061.5727,338,006Dec 31, 2014
    Eagle Series Tr-Eagle Small Cap Growth Fund826,3321.5426,822,736Dec 31, 2014
    iShares Core S&P Midcap ETF818,8121.5226,578,637Dec 31, 2014
    Wells Fargo Advantage Common Stock Fd765,9651.4323,890,448Nov 30, 2014
    Vanguard Small-Cap Growth Index Fund660,9381.2317,666,872Sep 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.