TomoTherapy Inc: Ownership

Ownership Information
Shares Outstanding 54.00 Mil
Institutional Ownership (%)46.96
Top 10 Institutions (%)28.50
Mutual Fund Ownership (%)1.21
5%/Insider Ownership (%)16.09
Float (%)83.91
Ownership Activity
Description# of HoldersShares
Total Positions 8925,360,716
New Positions190
Soldout Positions450
Net Position Change-6-3,823,763
Buyers584,167,249
Sellers64-7,991,012
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
Janus Capital Management LLC 3,256,400 70,355 2.2 5,338,588 6.1 0.0 09-30-09
Vanguard Group, Inc. 1,872,550 60,735 3.4 3,125,651 3.5 0.0 09-30-09
BlackRock Institutional Trust Company, N.A. 1,696,541 144,223 9.3 3,077,149 3.2 0.0 09-30-09
Essex Investment Management Company, LLC 1,571,832 565,163 56.1 1,771,268 2.9 0.3 12-31-09
Soundpost Partners, LP 1,400,000 100,000 7.7 2,487,000 2.6 4.3 09-30-09
State of Wisconsin Investment Board 1,288,872 -650,050 -33.5 248,781 2.4 0.0 09-30-09
Wellington Management Company, LLP 1,232,837 -124,963 -9.2 1,604,234 2.3 0.0 09-30-09
Dimensional Fund Advisors, LP 1,073,726 199,415 22.8 2,244,879 2.0 0.0 09-30-09
Norges Bank 1,020,184 953,926 1,439.7 2,124,576 1.9 0.0 12-31-08
T. Rowe Price Associates, Inc. 1,001,200 -17,900 -1.8 1,532,671 1.9 0.0 09-30-09
State Street Global Advisors (US) 992,670 256,554 34.9 2,273,942 1.8 0.0 09-30-09
M&I Investment Management Corp. 823,615 -65,952 -7.4 1,119,944 1.5 0.1 09-30-09
Thompson Investment Management, Inc. 691,638 2,400 0.3 1,099,389 1.3 0.7 09-30-09
Diamondback Capital Management, L.L.C. 685,900 124,100 22.1 1,424,997 1.3 0.1 09-30-09
Lord, Abbett & Co. LLC 592,000 33,500 6.0 1,027,485 1.1 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 7:24 AM Eastern Time