Vienna Stock Exchange announced that it revised the calculation base for the RDXxt index on March 13, 2008. The index comprises most liquid Russian GDRs trading on LSE. The index committee decided to include i.a. MMK GDRs into the index. The change to become effective as of today, March 25, 2008. The weight of MMK GDRs will become clear as the new calculation base becomes effective.
   Currently the RDXxt index comprises 17 GDRs and is used by Eurex (devision of Deutsche Boerse specializing on derivatives trading) as one of the source to build stock instruments. Starting from April 23, 2007, Eurex calculated futures for this index and for its separately for its components.