Affiliated Managers Group Inc: Ownership

Ownership Information
Shares Outstanding 42.00 Mil
Institutional Ownership (%)120.05
Top 10 Institutions (%)35.10
Mutual Fund Ownership (%)1.34
5%/Insider Ownership (%).82
Float (%)99.18
Ownership Activity
Description# of HoldersShares
Total Positions 31750,422,556
New Positions350
Soldout Positions930
Net Position Change-5-1,271,989
Buyers1907,685,959
Sellers195-8,957,948
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Holder Name Shs Held $ Market Value %Out Fully Diluted Shs Rpt Date
William Blair & Company, L.L.C. 2,546,422 165,542,896 6.1 2,546,422 09-30-09
Category Headings:
Shs Held - shares held at report date
$ Market Value - market value of position
%Out - % of shares outstanding
Fully Diluted Shs - shares held + shares which can be exercised within 60 days
Rpt Date - report date
Page generated 2/10/2010 2:51 AM Eastern Time