NYSE Arca Welcomes IPO of Netezza, Leading Data Warehouse Appliance Provider

Business Wire, July 19, 2007

First Technology Company To List on NYSE Arca

NEW YORK -- Netezza Corporation (NYSE Arca: NZ), a Framingham, Mass.-based provider of data warehouse appliances, today celebrated its IPO on NYSE Arca, NYSE Euronext's fully electronic market for emerging issuers.

"As a technology company new to the public market, we chose NYSE Arca because we believe it will provide a valuable listing platform for Netezza, offering enhanced visibility and liquidity through its electronic trading platform and the Lead Market Maker," said Netezza Corporation CEO Jit Saxena.

"We welcome Netezza Corporation to NYSE Arca," said NYSE Euronext CEO John A. Thain. "NYSE Arca offers Netezza and its shareholders a highly liquid and efficient market, and we look forward to providing the company with superior services, market quality and brand visibility."

NYSE Arca's affiliation with the NYSE through their common parent, NYSE Euronext, is a benefit to Netezza as they list on NYSE Arca, NYSE Euronext's fully electronic trading platform that trades over one billion shares a day. The combined global market capitalization of technology companies on NYSE Group market is $3.4 trillion (June 30, 2007) - more than any other market.

Netezza is the 37th new issue, 8th operating company and the first technology company to list on NYSE Arca since the 2006 merger between the former NYSE and Archipelago Holdings, Inc.

About NYSE Euronext (NYSE: NYX)

NYSE Euronext, a holding company created by the combination of NYSE Group, Inc. and Euronext N.V., commenced trading on April 4, 2007. NYSE Euronext (NYSE Euronext: NYX) operates the world's largest and most liquid exchange group and offers the most diverse array of financial products and services. NYSE Euronext, which brings together six cash equities exchanges in five countries and six derivatives exchanges in six countries, is a world leader for listings, trading in cash equities, equity and interest rate derivatives, bonds and the distribution of market data. Representing a combined EU21.7/$29.6 trillion total market capitalization of listed companies and average daily trading value of approximately EU85/$115 billion (as of April 30, 2007), NYSE Euronext seeks to provide the highest standards of market quality and integrity, innovative products and services to investors, issuers, and all users of its markets.

Background about listing on NYSE Arcas(m):

NYSE Euronext's multiple market platforms share similar attributes, providing superior trading quality over competitor models. In the NYSE Arca market model, listed issuers participate in the selection of a "Lead Market Maker" responsible for maintaining tight spreads and providing the opportunity for price improvement. NYSE Arca has captured a significant portion of trading in Nasdaq stocks by providing excellent market quality, as measured by its superior effective spreads and speed.

NYSE Arca listing standards extend the NYSE's focus on providing a listing and trading venue for quality companies.

* Emerging growth companies - both domestic as well as non-US companies - have the opportunity to list on NYSE Arca as an alternative listing venue, enabling NYSE Euronext to compete for smaller-sized companies that previously did not qualify.

* NYSE Arca is a globally recognized, fully electronic platform that trades around one billion shares each day on average, and that is growing quickly.

* NYSE Arca-listed companies participate in the selection of a "Lead Market Maker" responsible for maintaining depth and quality of trading in the stock. The "Lead Market Maker" brokerage firm has quote and execution obligations and the responsibility for keeping tight spreads in the stock - resulting in the superior market quality that issues have come to expect.

* NYSE Arca's affiliation with NYSE, through their common parent NYSE Euronext, is attractive to companies considering a listing on NYSE Arca. These companies have the ability to choose their own lead market maker which provides additional liquidity in their shares. In addition, NYSE Arca listed companies have the opportunity, once they qualify, to seamlessly transfer to the NYSE without paying the initial listing fee.