NSX Announces August 2007 Record Monthly ETF Trading Volume Of $2.1 Trillion

National Stock Exchange (NSX^SM) today announced that U.S. listed Exchange-Traded Fund (ETF) assets reached $518.9 billion at the end of August 2007, up 40.3 percent from $370.0 billion at the end of August 2006. ETF notional trading volume totaled a record $2.1 trillion in August 2007, representing approximately 30 percent of the total U.S. cash equity notional trading volume.

Net cash flow into ETFs at the end of August 2007 totaled $58.7 billion year-to-date, up 46.3 percent over the same year-ago period.

This data is included in NSX's August 2007 ETF Data Report released today. NSX began publishing month-end ETF Data Reports with the release of the June 2007 Report. These Data Reports are published promptly following the end of each calendar month.

The NSX monthly statistics include shares of open-end exchange-traded products, encompassing listed shares of investment companies, grantor trusts, Exchange-Trades Notes (ETNs) and commodity pools.

NSX's full report provides ETF data on Assets Under Management (AUM), Net Cash Flow and Notional Volume, broken out by Issuer, by Category, and the Top 10 ETFs by Size. To view NSX's full ETF Data Report, go to: http://www.nsx.com/etf_data.asp.

In addition, NSX is now publishing a product-by-product breakdown of the more than 550 ETFs on which the data is based. This list can be accessed at: http://www.nsx.com/etf_data2.asp.

NSX is the cost-effective provider of exchange services, committed to aligning its interests with those of its customers. Founded in 1885, NSX has been a driving force for change in the world of securities exchanges and continues to lead the way in exchange innovation.

To view NSX's monthly ETF Data Reports, go directly to: http://www.nsx.com/etf_data.asp. For more information on NSX, visit www.nsx.com.