OMX - Major shareholder announcements

Change in holding in OMX

Stock Exchange Announcement, September 20, 2007                                 

Change in holding in OMX 
                                                       
Qatar Holding LLC (Qatar Holding) announced that they have increased their      
holding in OMX AB. The holding in OMX AB is now 9.98 percent of the shares and  
votes of OMX AB. OMX AB has altogether 120 640 467 shares.                      


For further information, please contact:                                        
Jakob Håkanson, Vice President, Investor Relations, OMX    +46 8 405 60 42

Attachments:

070920_qatar_en.pdf