Ariad Pharmaceuticals Inc: Ownership

Ownership Information
Shares Outstanding 109.00 Mil
Institutional Ownership (%)31.90
Top 10 Institutions (%)20.30
Mutual Fund Ownership (%).47
5%/Insider Ownership (%)1.94
Float (%)98.06
Ownership Activity
Description# of HoldersShares
Total Positions 10534,768,076
New Positions360
Soldout Positions330
Net Position Change25-12,278,267
Buyers7215,649,928
Sellers47-27,928,196
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
BlackRock Institutional Trust Company, N.A. 6,795,068 1,837,091 37.1 7,084,337 6.2 0.0 09-30-09
Jennison Associates LLC 3,400,000 3,400,000 100.0 7,514,000 3.1 0.0 09-30-09
Vanguard Group, Inc. 2,338,822 558,463 31.4 2,320,223 2.1 0.0 09-30-09
State Street Global Advisors (US) 1,935,485 919,071 90.4 2,651,160 1.8 0.0 09-30-09
J.P. Morgan Investment Management Inc. (New York) 1,617,857 1,617,857 100.0 3,575,464 1.5 0.0 09-30-09
Dimensional Fund Advisors, LP 1,575,284 224,900 16.7 1,320,764 1.4 0.0 09-30-09
Millennium Management, L.L.C. 1,274,922 473,628 59.1 1,535,508 1.2 0.0 09-30-09
TIAA-CREF 1,112,805 300,400 37.0 1,159,451 1.0 0.0 09-30-09
ClearBridge Advisors 1,078,180 -319,650 -22.9 146,250 1.0 0.0 09-30-09
DekaBank Deutsche Girozentrale 997,000 22,000 2.3 434,950 0.9 0.0 06-30-09
Northern Trust Investments, N.A. 859,230 239,251 38.6 906,932 0.8 0.0 09-30-09
Redmile Group, LLC 858,200 858,200 100.0 1,896,622 0.8 2.0 09-30-09
11:11 Capital Corporation 800,000 0 0.0 488,000 0.7 0.7 09-30-09
JPMorgan Investment Advisors Inc. 663,600 663,600 100.0 1,466,556 0.6 0.0 09-30-09
Ironwood Investment Management, LLC 627,643 -1,553,686 -71.2 -2,103,035 0.6 0.6 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 1:17 AM Eastern Time