/C O R R E C T I O N -- The American Stock Exchange/

/C O R R E C T I O N -- The American Stock Exchange/
In the news release, American Stock Exchange to Trade Options on Seven
PowerShares, issued yesterday, March 2, by The American Stock Exchange over PR
Newswire, we are advised by the company that the second paragraph, third
sentence, should read "PowerShares Wilderhill Clean Energy Portfolio is an
exchange-traded fund incorporated in the USA," rather than "a closed-end fund"
as originally issued inadvertently. Complete, corrected release follows:



NEW YORK, March 2  /PRNewswire/ -- The American Stock Exchange(R) (Amex(R))
will launch trading in options on Thursday, March 3, 2005 on the underlying
shares of

   * PowerShares WilderHill Clean Energy Portfolio (PBW)
   * PowerShares Dynamic Large Cap Growth Portfolio (PWB)
   * PowerShares Dynamic Large Cap Value Portfolio (PWV)
   * PowerShares Dynamic Mid Cap Growth Portfolio (PWJ)
   * PowerShares Dynamic Mid Cap Value Portfolio (PWP)
   * PowerShares Dynamic Small Cap Growth Portfolio (PWT)
   * PowerShares Dynamic Small Cap Value Portfolio (PWY)



The PowerShares WilderHill Clean Energy Portfolio (PBW) will open with strike
prices of 10-20 with one-point increments and position limits of 1,350,000
shares.  The options will trade on the March expiration cycle with initial
expirations in March, April, June and September. The specialist will be
LaBranche Structured Products, LLC.  PowerShares Wilderhill Clean Energy
Portfolio is an exchange-traded fund incorporated in the USA.  The Fund's
investment objective seeks to correspond to the price and yield of the
Wilderhill Clean Energy Portfolio.

PowerShares Dynamic Large Cap Growth Portfolio (PWB) will open with strike
prices of 10-20 with one-point increments and position limits of 1,350,000
shares.  The options will trade on the March expiration cycle with initial
expirations in March, April, June and September. The specialist will be
LaBranche Structured Products, LLC.  PowerShares Dynamic Large Cap Growth
Portfolio is an exchange-traded fund incorporated in the USA. The Fund seeks
investment results that correspond the prices and yield of the Dynamic Large
Cap Growth Intellidex Index.

PowerShares Dynamic Large Cap Value Portfolio (PWV) will open with strike
prices of 10-20 with one-point increments and position limits of 1,350,000
shares.  The options will trade on the March expiration cycle with initial
expirations in March, April, June and September. The specialist will be
LaBranche Structured Products, LLC.  PowerShares Dynamic Large Cap Value
Portfolio is an exchange-traded fund incorporated in the USA. The Fund seeks
investment results that correspond the prices and yield of the Dynamic Large
Cap Value Intellidex Index.

PowerShares Dynamic Mid Cap Growth Portfolio (PWJ) will open with strike prices
of 10-20 with one-point increments and position limits of 1,350,000 shares. 
The options will trade on the March expiration cycle with initial expirations
in March, April, June and September. The specialist will be LaBranche
Structured Products, LLC.  PowerShares Dynamic Mid Cap Growth Portfolio is an
exchange-traded fund incorporated in the USA. The Fund seeks investment results
that correspond the prices and yield of the Dynamic Large Cap Value Intellidex
Index.

PowerShares Dynamic Mid Cap Value Portfolio (PWP) will open with strike prices
of 10-20 with one-point increments and position limits of 1,350,000 shares. 
The options will trade on the March expiration cycle with initial expirations
in March, April, June and September. The specialist will be LaBranche
Structured Products, LLC.  PowerShares Dynamic Mid Cap Value Portfolio is an
exchange-traded fund incorporated in the USA. The Fund seeks investment results
that correspond the prices and yield of the Dynamic Large Cap Value Intellidex
Index.

PowerShares Dynamic Small Cap Growth Portfolio (PWT) will open with strike
prices of 10-20 with one-point increments and position limits of 1,350,000
shares.  The options will trade on the March expiration cycle with initial
expirations in March, April, June and September. The specialist will be Kellogg
Capital Group, LLC.  PowerShares Dynamic Small Cap Growth Portfolio is an
exchange-traded fund incorporated in the USA. The Fund seeks investment results
that correspond the prices and yield of the Dynamic Small Cap Growth Intellidex
Index.

PowerShares Dynamic Small Cap Value Portfolio (PWY) will open with strike
prices of 10-20 with one-point increments and position limits of 1,350,000
shares.  The options will trade on the March expiration cycle with initial
expirations in March, April, June and September. The specialist will be Kellogg
Capital Group, LLC.  PowerShares Dynamic Small Cap Value Portfolio is an
exchange-traded fund incorporated in the USA. The Fund seeks investment results
that correspond the prices and yield of the Dynamic Small Cap Value Intellidex
Index.

The American Stock Exchange(R) (Amex(R)) is the only primary exchange that
offers trading across a full range of equities, options and exchange traded
funds (ETFs), including structured products and HOLDRS(SM).  In addition to its
role as a national equities market, the Amex is the pioneer of the ETF,
responsible for bringing the first domestic product to market in 1993. Leading
the industry in ETF listings, the Amex lists 145 ETFs to date.  The Amex is
also one of the largest options exchanges in the U.S., trading options on
broad-based and sector indexes as well as domestic and foreign stocks.  For
more information, please visit http://www.amex.com/. 

DATASOURCE: The American Stock Exchange



CONTACT:  Mary Chung of the American Stock Exchange, [phone],





Web site:  http://www.amex.com/ 

Copyright