Ceradyne Inc: Ownership

Ownership Information
Shares Outstanding 26.00 Mil
Institutional Ownership (%)62.54
Top 10 Institutions (%)32.90
Mutual Fund Ownership (%)4.24
5%/Insider Ownership (%)5.83
Float (%)94.17
Ownership Activity
Description# of HoldersShares
Total Positions 14916,260,966
New Positions190
Soldout Positions1060
Net Position Change-90-4,928,464
Buyers692,167,264
Sellers159-7,095,728
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
BlackRock Institutional Trust Company, N.A. 1,961,088 33,581 1.7 1,906,969 7.6 0.0 09-30-09
Vanguard Group, Inc. 1,073,404 13,681 1.3 960,787 4.2 0.0 09-30-09
Tocqueville Asset Management LP 884,702 109,279 14.1 2,790,468 3.4 0.3 12-31-09
AQR Capital Management, LLC 862,479 197,320 29.7 4,062,532 3.4 0.2 09-30-09
Dimensional Fund Advisors, LP 788,592 13,575 1.8 768,091 3.1 0.0 09-30-09
State Street Global Advisors (US) 780,442 55,836 7.7 1,508,960 3.0 0.0 09-30-09
Advisory Research, Inc. 758,647 91,882 13.8 2,130,930 3.0 0.3 09-30-09
OppenheimerFunds, Inc. 543,517 -144,087 -21.0 -2,180,420 2.1 0.0 09-30-09
Columbia Management Advisors, LLC 456,993 58,505 14.7 1,339,384 1.8 0.0 09-30-09
Northern Trust Investments, N.A. 439,991 240,700 120.8 4,545,556 1.7 0.0 09-30-09
Wellington Management Company, LLP 438,840 -411,174 -48.4 -6,967,310 1.7 0.0 09-30-09
Citadel Investment Group, L.L.C. 371,932 -90,737 -19.6 -1,353,221 1.4 0.1 09-30-09
Brandywine Global Investment Management, LLC 354,700 -19,900 -5.3 -113,785 1.4 0.1 09-30-09
Argyll Research, LLC 266,800 -205,600 -43.5 -3,452,140 1.0 0.0 09-30-09
Disciplined Growth Investors, Inc 262,275 -5,275 -2.0 82,568 1.0 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 2/10/2010 3:15 AM Eastern Time