OSI Pharmaceuticals Inc: Ownership

Ownership Information
Shares Outstanding 58.00 Mil
Institutional Ownership (%)71.74
Top 10 Institutions (%)32.60
Mutual Fund Ownership (%)2.86
5%/Insider Ownership (%).52
Float (%)99.48
Ownership Activity
Description# of HoldersShares
Total Positions 20941,607,464
New Positions320
Soldout Positions1490
Net Position Change-127-11,490,718
Buyers1048,491,595
Sellers231-19,982,312
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
Sectoral Asset Management Inc. 3,122,660 185,272 6.3 27,307,436 5.4 3.6 09-30-09
Westfield Capital Management Company, LP 3,062,853 95,513 3.2 24,350,704 5.3 1.1 09-30-09
Janus Capital Management LLC 2,660,117 224,815 9.2 25,153,556 4.6 0.2 09-30-09
Vanguard Group, Inc. 2,245,249 71,623 3.3 17,895,828 3.9 0.0 09-30-09
Fidelity Management & Research 1,925,790 -177,100 -8.4 8,615,802 3.3 0.0 09-30-09
OrbiMed Advisors, LLC 1,639,100 -311,700 -16.0 2,789,146 2.8 2.5 09-30-09
State Street Global Advisors (US) 1,573,290 -105,535 -6.3 8,143,907 2.7 0.0 09-30-09
UBS Securities LLC 911,328 221,119 32.0 12,685,278 1.6 0.1 09-30-09
Fred Alger Management, Inc. 897,561 -173,325 -16.2 1,452,791 1.5 0.3 09-30-09
Lord, Abbett & Co. LLC 886,306 -716,937 -44.7 -13,972,948 1.5 0.1 09-30-09
Wells Capital Management Inc. 869,765 653,935 303.0 24,609,824 1.5 0.1 09-30-09
TimesSquare Capital Management, LLC 822,100 202,200 32.6 11,520,353 1.4 0.3 09-30-09
BlackRock Financial Management, Inc. 802,329 780,151 3,517.7 27,696,128 1.4 0.1 09-30-09
Bridger Management, LLC 800,000 400,000 100.0 16,948,000 1.4 1.4 09-30-09
Nomura Asset Management Co., Ltd. 722,078 106,978 17.4 8,125,080 1.2 0.3 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 11:44 AM Eastern Time