Changes to Stockholm Stock Exchange’s Most Traded and ATTRACT40 segments

The Stockholm Stock Exchange’s Most Traded and ATTRACT40 segments are to be updated as of January 1, 2006. Four new companies will be traded in the Most Traded segment of the A List. The ATTRACT40 segment of the O List will have 15 new companies, while eight companies will be removed from the segment. This is the last time these segments will be updated.

Every half-year, the A and O Lists’ Most Traded and ATTRACT40 segments are reviewed on the basis of trading statistics. Accordingly, the Most Traded and ATTRACT40 segments reflect the companies that were of greatest interest to investors during the preceding six months or year. This is the last time these two segments will be updated since the new pan-Nordic OMX list will be introduced by midyear 2006. Most of the companies on the Most Traded and approximately 20 of the companies on the ATTRACT40 list will then be included in the Large Cap segment to be presented jointly for Sweden, Denmark and Finland. As of January 1, 2006, the Most Traded list consists of 33 companies. The number of companies on the ATTRACT40 list will be 60, of which 15 will be new in relation to the preceding period. The companies that are removed from ATTRACT40 will be transferred to the Other shares segment of the O List. Changes to the Most Traded and ATTRACT40 lists as of January 1, 2006: · New companies on the Most Traded list: Elekta AB, AB Industrivärden, JM AB and WM-data AB · Companies to be removed from the Most Traded list: None · New companies on the ATTRACT40 list: Anoto Group AB, Aspiro AB, Castellum AB, Gunnebo Industrier AB, Karo Bio AB, Know IT AB, Kungsleden AB, Net Insight AB, AB Novestra, Nobia AB, NOCOM AB, SECTRA AB, Sensys Traffic AB, Teligent AB and Zodiak Television AB · Companies to be removed from the ATTRACT40 list: JC AB, Micronic Laser Systems AB, PartnerTech AB, Q-Med AB, RNB RETAIL AND BRANDS AB, Sigma AB, Studsvik AB and Svedbergs i Dalstorp AB Riddarhyttan Resources AB was delisted during the second half of 2005.

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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.