AMVESCAP Announces August 31, 2006 Assets Under Management

AMVESCAP today reported preliminary month-end assets
under management of $428.9 billion. (NYSE:AVZ).

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*T
                                  Ending Assets Under Management
                 ----------------------------------------------------
(In billions)    August 31, 2006(a)   July 31, 2006     June 30, 2006
                 ---------------------------------------------------- 
Long-Term          $364.3              $356.2            $352.5
Money Market (b)   $64.6               $66.0             $61.3
                 ----------------------------------------------------
Total              $428.9              $422.2            $413.8
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*T
   (a) Preliminary - subject to adjustment.
   (b) Money Market assets include both retail and institutional
money market assets.

   AMVESCAP is a leading independent global investment manager,
dedicated to helping people worldwide build their financial security.
Operating under the AIM, AIM Trimark, INVESCO, Invesco Perpetual and
Atlantic Trust brands, AMVESCAP strives to deliver outstanding
products and services through a comprehensive array of enduring
investment solutions for our retail, institutional and private wealth
management clients around the world. The company is listed on the
London, New York and Toronto stock exchanges with the symbol "AVZ."
Additional information is available at www.amvescap.com.