Achillion Pharmaceuticals Inc: Ownership

Ownership Information
Shares Outstanding 37.00 Mil
Institutional Ownership (%)17.74
Top 10 Institutions (%)17.70
Mutual Fund Ownership (%)2.55
5%/Insider Ownership (%)37.98
Float (%)62.02
Ownership Activity
Description# of HoldersShares
Total Positions 126,564,995
New Positions10
Soldout Positions100
Net Position Change-8-282,536
Buyers41,271,855
Sellers12-1,554,391
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
Janus Capital Management LLC 3,323,265 162,322 5.1 259,715 9.0 0.0 09-30-09
Advent International Corp. 1,116,432 0 0.0 1,685,813 3.0 1.2 12-31-09
Norges Bank 1,097,375 1,097,375 100.0 746,215 3.0 0.0 12-31-08
Wellington Management Company, LLP 545,600 -23,700 -4.2 -37,920 1.5 0.0 09-30-09
Dimensional Fund Advisors, LP 288,246 0 0.0 0 0.8 0.0 09-30-09
GE Asset Management Inc. 82,050 0 0.0 123,896 0.2 0.0 12-31-09
Timber Hill LLC 34,025 -6,928 -16.9 -11,085 0.1 0.0 09-30-09
California Public Employees' Retirement System 30,800 0 0.0 0 0.1 0.0 09-30-09
BlackRock Institutional Trust Company, N.A. 18,246 510 2.9 816 0.0 0.0 09-30-09
Northern Trust Investments, N.A. 13,756 11,648 552.6 18,637 0.0 0.0 09-30-09
Northern Trust Global Investments 10,200 0 0.0 0 0.0 0.0 09-30-09
Wells Fargo Securities, LLC 5,000 0 0.0 0 0.0 0.0 09-30-09
OrbiMed Advisors, LLC 0 -61,600 -100.0 -80,080 0.0 0.0 12-31-08
RBC Asset Management, Inc. 0 -100 -100.0 -68 0.0 0.0 03-31-09
Schroder Investment Management Ltd. (SIM) 0 -86,477 -100.0 -135,769 0.0 0.0 06-30-09
*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 4:23 AM Eastern Time