Arrowhead Research Corp: Ownership

Ownership Information
Shares Outstanding 55.00 Mil
Institutional Ownership (%)5.29
Top 10 Institutions (%)5.10
Mutual Fund Ownership (%).18
5%/Insider Ownership (%)6.88
Float (%)93.12
Ownership Activity
Description# of HoldersShares
Total Positions 222,909,359
New Positions20
Soldout Positions190
Net Position Change-18-2,208,437
Buyers5806,297
Sellers23-3,014,734
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
Vanguard Group, Inc. 801,874 0 0.0 -96,224 1.4 0.0 06-30-09
Credit Suisse Asset Management, LLC (US) 767,094 764,232 26,702.7 512,694 1.4 0.0 09-30-09
York Capital Management 519,030 0 0.0 -62,284 0.9 0.0 06-30-09
Barclays Global Investors, N.A. 428,220 -59,044 -12.1 -84,451 0.8 0.0 06-30-09
Dimensional Fund Advisors, LP 76,195 0 0.0 17,525 0.1 0.0 09-30-09
Potomac Capital Management, L.L.C. 69,500 0 0.0 -8,340 0.1 0.1 06-30-09
Timber Hill LLC 57,351 25,434 79.7 7,360 0.1 0.0 06-30-09
BNY Mellon Asset Management 56,075 -2,650 -4.5 11,731 0.1 0.0 09-30-09
Geode Capital Management, L.L.C. 26,947 414 1.6 -3,001 0.0 0.0 06-30-09
California Public Employees' Retirement System 21,981 0 0.0 -2,637 0.0 0.0 06-30-09
The Keller Group Investment Management, Inc. 20,000 0 0.0 -2,400 0.0 0.0 06-30-09
State Street Global Advisors (US) 16,800 0 0.0 -2,016 0.0 0.0 06-30-09
Knight Capital Group, Inc. 15,417 15,417 100.0 6,783 0.0 0.0 06-30-09
Banc of America Securities Merrill Lynch 14,609 0 0.0 3,360 0.0 0.0 09-30-09
Northern Trust Investments, N.A. 10,819 0 0.0 -1,299 0.0 0.0 06-30-09
*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 2:05 AM Eastern Time