• RUBICON TECHNOLOGY INC Ownership Breakdown

  • Ownership Breakdown: RBCN

    as of 7/23/08
    Large Block Holder Type Number  
    Institutions 75
     
    Total Number of Shares Held
    21.51 M
    % of Shares Owned by all Large Block Holders
    100.00%
    Mutual Fund 89
    Other Major 5
    Total Number of Large Block Holders 169
  • Top 10 Institutional Holders: RBCN

    Name Shares Estimated Value of Shares * Holdings Shares Outstanding Turnover Rating
    Cross Atlantic Capital Partners 5.89 M 119.61 M 84.36% 27.36% High
    Fidelity Management & Research 2.32 M 52.96 M 0.01% 10.76% Low
    KB Partners, LLC 1.36 M 32.27 M 100.00% 6.32%
    Baron Capital Management, Inc. 1.1 M 31.81 M 0.19% 5.10% Low
    Gazelle TechVentures 1.48 M 30.17 M 100.00% 6.90% Low
    Invesco PowerShares Capital Management LLC 760,996 22.05 M 0.18% 3.54% Medium
    Kleinheinz Capital Partners, Inc. 397,822 11.53 M 0.48% 1.85% Medium
    Brookside Capital Investors, L.P. 376,165 10.90 M 0.19% 1.75% High
    Symphony Asset Management, L.L.C. 247,418 7.17 M 0.32% 1.15% Medium
    Delta Lloyd Asset Management N.V. 234,400 6.79 M 0.08% 1.09% Low

    Total % of Shares Owned by:

    Top 10 Holders
    65.82%
    Top 25 Holders
    75.22%
    Top 50 Holders
    77.97%


     

    * Value of shares is estimated based on the closing price of the month in which the shares were purchased.

  • Top 10 Mutual Fund Holders: RBCN

    Name Shares Estimated Value of Shares * Holdings Shares Outstanding Turnover Rating
    Fidelity Growth Company Fund 2.06 M 47.15 M 0.13% 9.58% Low
    Baron Small Cap Fund 1.1 M 31.81 M 1.13% 5.10% Low
    PowerShares Wilderhill Clean Energy 792,507 18.12 M 1.11% 3.68% Medium
    Fidelity Select Electronics Portfolio 200,000 4.57 M 0.35% 0.93% Medium
    Oppenheimer Main Street Small Cap Fund 140,300 4.07 M 0.08% 0.65% High
    OHRA New Energy Fonds N.V. 115,000 2.73 M 2.58% 0.53% Low
    Royce Micro-Cap Fund 80,200 2.32 M 0.31% 0.37% Medium
    Northwestern Mutual Small Cap Growth Stock Portfol 79,200 2.30 M 0.57% 0.37% High
    iShares Russell 2000 Index Fund 59,491 1.72 M 0.02% 0.28% Low
    Royce Capital Fund - Micro-Cap Portfolio 54,800 1.59 M 0.31% 0.25% Low

    Total % of Shares Owned by:

    Top 10 Holders
    21.76%
    Top 25 Holders
    23.31%
    Top 50 Holders
    23.85%


     

    * Value of shares is estimated based on the closing price of the month in which the shares were purchased.

  • Top 10 Other Holders: RBCN

    Name Shares Estimated Value of Shares * Holdings Shares Outstanding Turnover Rating
    Mikolajczyk (Michael E) 87,430 1.78 M 0.41% Low
    Spencer (Raymond J) 9,522 193,487.00 0.04%
    Caldwell (Donald R) 7,444 151,262.00 0.03% Low
    Hunter (Gordon) 1,864 37,876.00 0.01% Low
    Aquilano (Don N) 344 6,990.00 0.00% High
    —%
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    Total % of Shares Owned by:

    Top 10 Holders
    0.50%
    Top 25 Holders
    0.50%
    Top 50 Holders
    0.50%


     

    * Value of shares is estimated based on the closing price of the month in which the shares were purchased.