NYSE Euronext (NYX) announced today that its board of directors has authorized the repurchase of up to $1 billion of NYSE Euronext’s common stock. The Board of NYSE Euronext also approved a 20% increase in its annual dividend to $1.20 from $1.00 per common share as part of a new dividend policy to grow the dividend to its shareholders, with a target payout ratio of 35% to 45 % of net income, while maintaining high investment grade credit ratings.

NYSE Euronext plans to repurchase stock from time to time at the discretion of management in open market or privately negotiated transactions or otherwise, subject to applicable United States and European laws, regulations and approvals, strategic considerations, market conditions and other factors.

Under SEC rules, NYSE Euronext will not be able to repurchase shares during certain restricted time periods, including during the pendency of NYSE Euronext's business combination transaction with the Amex Membership Corporation and certain other periods.

The share repurchase plan does not obligate NYSE Euronext to repurchase any dollar amount or number of shares of its common stock. Any such repurchases will be made in compliance with the applicable provisions of Rules 10b-5 and 10b-18 and Regulation M of the Securities Exchange Act of 1934, as amended, and any other applicable laws and regulations, including any applicable European Union Regulations and Regulations of the Autorité des Marchés Financiers (“AMF”).

The new annual dividend rate will be payable on a quarterly basis and will become effective with the second quarter 2008 dividend payment. The second quarter dividend of $0.30 will be paid on June 30, 2008 to shareholders of record as of the close of business on June 13, 2008.