Idenix Pharmaceuticals Inc: Ownership

Ownership Information
Shares Outstanding 66.00 Mil
Institutional Ownership (%)32.25
Top 10 Institutions (%)22.50
Mutual Fund Ownership (%).26
5%/Insider Ownership (%)59.00
Float (%)41.00
Ownership Activity
Description# of HoldersShares
Total Positions 7321,286,400
New Positions160
Soldout Positions390
Net Position Change-32,599,315
Buyers475,353,247
Sellers50-2,753,932
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
MPM Capital, L.L.C. 3,321,534 0 0.0 -3,122,242 5.0 6.5 12-31-09
T. Rowe Price Associates, Inc. 2,379,000 998,900 72.4 2,272,342 3.6 0.0 09-30-09
BlackRock Institutional Trust Company, N.A. 2,161,289 300,036 16.1 -171,028 3.3 0.0 09-30-09
Adage Capital Management, L.P. 1,615,835 177,994 12.4 -298,325 2.4 0.0 09-30-09
DKR Oasis Management Company LP 1,251,834 1,251,834 100.0 3,868,167 1.9 17.5 09-30-09
Vanguard Group, Inc. 1,179,981 47,887 4.2 -519,965 1.8 0.0 09-30-09
RA Capital Management, LLC 894,187 894,187 100.0 2,763,038 1.3 3.1 09-30-09
Pyramis Global Advisors, LLC 710,320 158,480 28.7 164,118 1.1 0.0 09-30-09
Putnam Investment Management, L.L.C. 684,735 0 0.0 -403,994 1.0 0.0 09-30-09
Renaissance Technologies Corp. 654,926 -196,568 -23.1 -1,109,777 1.0 0.0 09-30-09
Dimensional Fund Advisors, LP 635,914 0 0.0 -375,190 1.0 0.0 09-30-09
Nomura Securities Co., Ltd. 622,399 320,923 106.5 813,781 0.9 0.0 09-30-09
State Street Global Advisors (US) 568,132 159,990 39.2 253,565 0.9 0.0 09-30-09
Wall Street Associates, LLC 516,900 3,400 0.7 -292,459 0.8 0.1 09-30-09
TIAA-CREF 459,645 142,216 44.8 252,164 0.7 0.0 09-30-09
*Category Headings:
Shs Held - shares held at report date
Shs Chg - position change within reporting period
%Chg - % change
$Chg - market value of the position change
%Out - % of shares outstanding
%Port - % Portfolio
Rpt Date - report date
Page generated 2/10/2010 10:22 AM Eastern Time