OMX signs liquidity providing agreement with Remium for trading in the OMX AB share on Helsinki Stock Exchange OMX AB and Remium AB have concluded a liquidity providing agreement (market making), which fulfils the requirements of the Helsinki Stock Exchange Ltds Liquidity Providing. The purpose of the agreement is to promote the liquidity of the OMX AB share listed on Helsinki Stock Exchange. According to the agreement, Remium will provide the OMX AB share with bids and offers so that the maximum difference between a bid and offer price is 1 percent of the bid. Bids and offers include at least 800 shares, which equals 4 round lots. Remium undertakes to submit bids and offers for the OMX AB share in the Helsinki Stock Exchanges trading system, on the Main List, on each trading day for at least 85 percent of the time of continuous trading and in the Exchanges opening and closing auction procedures applicable to the OMX AB share. The liquidity providing operation will commence on October 11, 2004. The agreement is valid, after a six months term, until further notice and the term of notice of the agreement is one month. For more information or comments, please contact: Jakob Håkanson, Vice President, Head of IR, OMX AB +46-8-405 60 42 Björn Garat, Corporate Finance, Remium AB +46-8-454 32 91 ABOUT OMX OMX owns and operates the largest securities market in the Northern Europe and is a leading provider of marketplace services and solutions for the financial and energy markets. OMX consists of two divisions: OMX Exchanges and OMX Technology. OMX Exchanges owns and operates the stock exchanges in Stockholm, Helsinki, Tallinn, Riga and Vilnius as well as the central securities depositories in Finland, Estonia and Latvia. Through OMX Exchanges OMX offers access to 80 percent of the Nordic and Baltic securities market. OMX Technology is a provider of transaction technology, processing and outsourcing solutions. OMX is listed on the Stockholm Stock Exchange and the Helsinki Stock Exchange. For more information please visit www.omxgroup.com.