Mattson Technology Inc: Ownership

Ownership Information
Shares Outstanding 50.00 Mil
Institutional Ownership (%)63.16
Top 10 Institutions (%)47.50
Mutual Fund Ownership (%).24
5%/Insider Ownership (%)4.98
Float (%)95.02
Ownership Activity
Description# of HoldersShares
Total Positions 6331,577,564
New Positions140
Soldout Positions670
Net Position Change-57-8,775,137
Buyers287,915,235
Sellers85-16,690,372
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
NWQ Investment Management Company, LLC 5,438,920 -625,298 -10.3 8,181,977 10.9 0.1 09-30-09
Verition Fund Management LLC 3,762,801 974,505 35.0 7,320,910 7.5 7.8 09-30-09
TCW Asset Management Company 2,604,796 -8,850 -0.3 4,261,423 5.2 0.0 09-30-09
Donald Smith & Co., Inc. 2,500,000 2,500,000 100.0 7,050,000 5.0 0.3 09-30-09
T. Rowe Price Associates, Inc. 2,133,943 -506,700 -19.2 2,901,760 4.3 0.0 09-30-09
Vanguard Group, Inc. 1,974,454 41,718 2.2 3,287,332 4.0 0.0 09-30-09
Dimensional Fund Advisors, LP 1,764,095 99,042 5.9 3,009,985 3.5 0.0 09-30-09
Fidelity Management & Research 1,279,069 -5,183,130 -80.2 -4,018,420 2.6 0.0 09-30-09
BlackRock Institutional Trust Company, N.A. 1,246,623 154,302 14.1 2,226,538 2.5 0.0 09-30-09
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 Management, Inc. 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
Harvey Partners, LLC 600,000 600,000 100.0 1,692,000 1.2 1.4 09-30-09
Renaissance Technologies Corp. 598,100 312,500 109.4 1,349,634 1.2 0.0 09-30-09
Todd-Veredus Asset Management LLC 550,100 550,100 100.0 1,551,282 1.1 0.0 09-30-09
*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 4:30 AM Eastern Time