Nuveen Insured Municipal Opportunity Fund Inc: Ownership

Ownership Information
Shares Outstanding 81.00 Mil
Institutional Ownership (%)4.09
Top 10 Institutions (%)2.70
Mutual Fund Ownership (%).00
5%/Insider Ownership (%).00
Float (%).00
Ownership Activity
Description# of HoldersShares
Total Positions 593,309,931
New Positions80
Soldout Positions230
Net Position Change-16-659,642
Buyers20575,947
Sellers36-1,235,589
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
Tattersall Advisory Group, Inc. 667,147 10,100 1.5 1,216,432 0.8 3.8 09-30-09
Van Kampen Asset Management 341,998 -18,338 -5.1 338,804 0.4 0.0 09-30-09
Evergreen Investment Management Company, LLC 245,666 -1,353 -0.5 386,508 0.3 0.0 09-30-09
Parametric Portfolio Associates LLC 153,632 34,918 29.4 674,813 0.2 0.0 09-30-09
Morgan Stanley Smith Barney LLC 140,062 140,062 100.0 1,925,853 0.2 0.0 09-30-09
Wells Fargo Securities, LLC 139,499 5,169 3.8 291,375 0.2 0.0 09-30-09
Bank of America Merrill Lynch (US) 138,317 18,962 15.9 456,470 0.2 0.0 09-30-09
Chronim Investments Inc. 121,220 0 0.0 13,334 0.1 0.6 12-31-08
Newgate Capital Management LLC 118,282 -8,591 -6.8 -154,794 0.1 0.1 12-31-09
UBS Securities LLC 111,945 45,749 69.1 737,610 0.1 0.0 09-30-09
Karpus Investment Management 104,174 -231,915 -69.0 -2,637,645 0.1 0.2 09-30-09
Herndon Plant Oakley Ltd. 101,535 -3,575 -3.4 123,224 0.1 0.5 09-30-09
Claymore Advisors, LLC 92,451 -4,104 -4.3 101,920 0.1 0.0 09-30-09
TFS Capital, L.L.C. 78,636 78,636 100.0 1,081,245 0.1 0.1 09-30-09
Lazard Asset Management, L.L.C. 78,000 41,000 110.8 624,430 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 12:35 AM Eastern Time