Mattson Technology Inc: Ownership

Ownership Information
Shares Outstanding 50.00 Mil
Institutional Ownership (%)56.55
Top 10 Institutions (%)45.20
Mutual Fund Ownership (%).22
5%/Insider Ownership (%)4.98
Float (%)95.02
Ownership Activity
Description# of HoldersShares
Total Positions 6228,274,776
New Positions120
Soldout Positions890
Net Position Change-80-10,835,652
Buyers284,537,256
Sellers108-15,372,908
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
NWQ Investment Management Company, LLC 6,064,218 -261,596 -4.1 1,842,093 12.1 0.1 06-30-09
Verition Fund Management LLC 3,762,801 974,505 35.0 7,320,910 7.5 7.7 09-30-09
T. Rowe Price Associates, Inc. 2,640,643 -1,803,000 -40.6 -616,701 5.3 0.0 06-30-09
TCW Asset Management Company 2,604,796 -8,850 -0.3 4,261,423 5.2 0.0 09-30-09
Vanguard Group, Inc. 1,932,736 123,370 6.8 760,761 3.9 0.0 06-30-09
Dimensional Fund Advisors, LP 1,764,095 99,042 5.9 3,009,985 3.5 0.0 09-30-09
Barclays Global Investors, N.A. 1,092,321 -1,365,725 -55.6 -775,820 2.2 0.0 06-30-09
Shannon River Fund Management, L.L.C. 1,058,900 1,058,900 100.0 2,986,098 2.1 2.3 09-30-09
American Century Investment Mgmt. 910,600 553,900 155.3 2,146,986 1.8 0.0 09-30-09
Brightfield Capital Management, L.L.C. 790,000 70,275 9.8 1,378,525 1.6 3.0 09-30-09
Todd-Veredus Asset Management LLC 550,100 550,100 100.0 1,551,282 1.1 0.0 09-30-09
State of Wisconsin Investment Board 507,800 -200,000 -28.3 596,792 1.0 0.0 09-30-09
Goldman Sachs & Company, Inc. 491,690 332,013 207.9 446,065 1.0 0.0 06-30-09
Portolan Capital Management, L.L.C. 471,907 0 0.0 773,928 0.9 0.3 09-30-09
Needham Investment Management L.L.C. 452,500 0 0.0 742,100 0.9 0.4 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 11/25/2009 12:19 AM Eastern Time