Environmental Power Corp: Ownership

Ownership Information
Shares Outstanding 16.00 Mil
Institutional Ownership (%)16.03
Top 10 Institutions (%)15.00
Mutual Fund Ownership (%).00
5%/Insider Ownership (%)6.28
Float (%)93.72
Ownership Activity
Description# of HoldersShares
Total Positions 262,565,230
New Positions20
Soldout Positions210
Net Position Change-22-2,698,928
Buyers463,464
Sellers26-2,762,392
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
Ardsley Partners 874,289 0 0.0 -78,686 5.6 0.1 09-30-09
AGF Investments Inc. 447,500 0 0.0 -40,275 2.8 0.0 09-30-09
Black River Asset Management, L.L.C. 433,300 0 0.0 -38,997 2.8 0.0 09-30-09
Dimensional Fund Advisors, LP 181,490 -1,382 -0.8 -17,052 1.2 0.0 09-30-09
GWL Investment Management Ltd. 163,800 0 0.0 -14,742 1.0 0.0 09-30-09
I. G. Investment Management, Ltd. 117,800 0 0.0 -10,602 0.8 0.0 09-30-09
Robeco Institutional Asset Management B.V. 50,000 0 0.0 -4,500 0.3 0.0 09-30-09
Morgan Stanley Smith Barney LLC 46,622 46,622 100.0 20,047 0.3 0.0 09-30-09
Renaissance Technologies Corp. 45,500 -11,300 -19.9 -9,971 0.3 0.0 09-30-09
UBS Securities LLC 35,554 7,604 27.2 754 0.2 0.0 09-30-09
Sandell Asset Management Corp. 34,285 0 0.0 -3,085 0.2 0.0 09-30-09
California Public Employees' Retirement System 26,200 0 0.0 -2,358 0.2 0.0 09-30-09
GAMCO Investors, Inc. 25,000 -5,000 -16.7 -4,850 0.2 0.0 09-30-09
Northern Trust Investments, N.A. 20,487 8,238 67.3 2,440 0.1 0.0 09-30-09
First Allied Securities Inc. 19,500 0 0.0 -1,755 0.1 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 3:56 AM Eastern Time