Press release, August 29, 2007 Expanding memberships and influx of new members on the Nordic Exchange The Nordic Exchange is presently seeing an influx of new members, and existing members are expanding their memberships to include more markets in order to enjoy the advantages of the OMX Nordic Exchange membership. All in all eight new members have joined the Nordic Exchange and 13 members have expanded their membership this year. ”It is a pleasure to see the continuously increasing interest in achieving direct trading access to the Nordic Exchange expressed by Nordic as well as non-Nordic securities houses. We have created a market of such size that we are now a leader in several industries, including paper, fashion and IT,” says Jukka Ruuska, President of Nordic Marketplaces at OMX. Over the summer the Amsterdam-based brokerage house All Options B.V. has joined the Nordic Exchange in Stockholm and Helsinki. In addition, today we welcome Norwegian Artic Securities ASA as a new member in Stockholm. During September, Flow Traders from Amsterdam will join the Danish, Finnish and Swedish markets and become the ninth new member on OMX Nordic Exchange. Moreover, BNP Paribas, Paris, and IMC, Amsterdam, which were already members in Stockholm and Helsinki, have extended their membership of the Nordic Exchange to include the Danish market. In July, Saga Capital Investment Bank hf and NordVest Securities Ltd - both based in Iceland - have expanded their membership to Stockholm and Helsinki. Van der Moolen has had access to the Finnish market and in July they have expanded their membership to include the Swedish equity market. Last week Van der Moolen joined the Danish market and will soon add on the Icelandic market. EIK Bank A/S based in Copenhagen expended its membership to OMX Nordic Exchange Iceland in July and to Stockholm as of August 27, 2007. Moreover, All Options is going to broaden its activities to also cover the Danish equity market within short time. Today, there are 162 banks and brokerage firms trading on one or more markets within OMX Nordic Exchange. For further information, please contact: Ellen-Margrethe Soelberg, OMX Nordic Exchange Copenhagen +45 3377 0430 Jonas Rodny, OMX Nordic Exchange Stockholm +46 (0)8 405 72 67 Jarmo Holopainen, OMX Nordic Exchange Helsinki +359 9 6166 7203 Helga Björk Eiríksdóttir, OMX Nordic Exchange Iceland +354 525 2844 About OMX | About OMX | OMX is a leading expert in the exchange industry. The common offering from OMX Nordic Exchange in Helsinki, Copenhagen, Stockholm, Iceland, Tallinn, Riga and Vilnius, comprises over 800 companies including its alternative market First North. OMX provides technology to over 60 exchanges, clearing organizations and central securities depositories in over 50 countries. OMX is a Nordic Large Cap company in the Financials sector on the OMX Nordic Exchange. For more information, please visit www.omxgroup.com. OMX AB (publ). SE-105 78 Stockholm. SWEDEN. Tel. +46 8 405 60 00. Fax +46 8 405 60 01. Visiting Address: Tullvaktsvägen 15 Reg. No. 556243-8001. www.omxgroup.com EFFICIENT SECURITIES TRANSACTIONS