American Superconductor Corp: Ownership

Ownership Information
Shares Outstanding 44.00 Mil
Institutional Ownership (%)63.74
Top 10 Institutions (%)30.40
Mutual Fund Ownership (%)2.53
5%/Insider Ownership (%)3.10
Float (%)96.91
Ownership Activity
Description# of HoldersShares
Total Positions 18928,044,408
New Positions380
Soldout Positions600
Net Position Change-19-470,664
Buyers1055,649,728
Sellers124-6,120,392
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
BlackRock Institutional Trust Company, N.A. 2,314,573 356,398 18.2 26,228,684 5.2 0.0 09-30-09
Fidelity Management & Research 1,885,900 1,065,700 129.9 41,722,836 4.3 0.0 09-30-09
Vanguard Group, Inc. 1,640,660 50,922 3.2 13,297,114 3.7 0.0 09-30-09
Columbia Management Advisors, LLC 1,476,717 102,526 7.5 13,456,574 3.3 0.0 09-30-09
Munder Capital Management 1,472,520 -438,995 -23.0 -788,948 3.3 0.7 09-30-09
OppenheimerFunds, Inc. 1,460,410 -242,390 -14.2 4,283,651 3.3 0.1 09-30-09
Invesco PowerShares Capital Management LLC 936,175 -92,863 -9.0 4,387,063 2.1 0.1 09-30-09
State Street Global Advisors (US) 893,235 276,265 44.8 13,763,640 2.0 0.0 09-30-09
Coatue Capital, L.L.C. 667,567 0 0.0 4,866,563 1.5 1.0 09-30-09
Dimensional Fund Advisors, LP 617,193 -4,900 -0.8 4,370,712 1.4 0.0 09-30-09
KBC Groep NV 616,554 222,456 56.4 10,334,149 1.4 0.3 09-30-09
IronBridge Capital Management, L.P. 522,062 -141,996 -21.4 78,437 1.2 0.3 09-30-09
Essex Investment Management Company, LLC 514,143 9,051 1.8 4,087,663 1.2 1.1 12-31-09
Rockefeller & Co., Inc. 492,073 20,000 4.2 4,112,212 1.1 0.6 09-30-09
Turner Investment Partners, Inc. 448,820 27,090 6.4 3,983,011 1.0 0.1 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 6:49 AM Eastern Time