Following the press release of 27 May 2005 in which Van der Moolen Holding N.V. announced its intention to acquire 100% of the shares of Curvalue Beheer B.V. and all its subsidiaries, Van der Moolen is pleased to announce that a definitive agreement was signed on 12 October 2005 to acquire Curvalue. The agreement is signed on the terms as indicated in the above mentioned press release.

The transaction remains subject to customary conditions including regulatory consents and is expected to be completed in January 2006.

The agreement to acquire Curvalue is an important breakthrough for Van der Moolen, allowing it to strengthen its European operations in accordance with its growth strategy. By integrating Curvalue's operations and through Curvalue's 'OnlineTrader', Van der Moolen has entered the market of institutional internet brokerage both in derivatives and securities and will expand into trading in derivatives within Europe. The activities and state-of-the-art software of Curvalue will both complement and strengthen Van der Moolen's current operations.

Together with the announcement of its third quarter 2005 results on 27 October 2005, Van der Moolen will elaborate on how it intends to integrate the business of Curvalue into its own operations, and provide background on Curvalue’s operations.

Van der Moolen trades on the leading US and European equity exchanges. The group trades in open outcry and electronic markets in several time zones. On the NYSE, Van der Moolen currently has a market share of more than 11% of transaction volume for which it acts as specialist. Van der Moolen's traders worldwide execute an average of 100,000 trades a day. Turnover and price volatility are the most important factors influencing its results. Van der Moolen's shares are listed on Euronext Amsterdam and American Depositary Receipts representing Van der Moolen shares are listed on the NYSE. For more information about Van der Moolen, please visit www.vandermoolen.com.

Curvalue, founded in 1991, is one of the leading independent trading and broker/dealer houses in Europe. The company focuses mainly on the European equity and derivative exchanges as a specialist. In 2005 Curvalue launched the Internet broker 'OnlineTrader' which provides professional clients with direct access to the world's markets for futures and options. All activities of Curvalue are supported and maintained mainly by its in-house built software platform. For more information about Curvalue, please visit www.curvalue.com.

For more information about this transaction please contact Van der Moolen (+31 20 535 67 89 or info@vandermoolen.com).