Change in holding in OMX


Stock Exchange Announcement, February 22, 2008                                  

Change in holding in OMX 
                                                       
Citigroup Global Markets Limited (Citigroup) announced today that they have     
decreased their holding in OMX AB below five (5) percent on February 20, 2008.  
The holding in OMX AB was decreased with 8,385,900 shares. Thereafter,          
Citigroup's holding in OMX AB is now 63,701 shares which represents 0.05 percent
of the shares and votes of OMX AB. The share capital of OMX AB consists of 
120,640,467 shares. 


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

Attachments

20080222_citigroup_en.pdf