Today, the MICEX stock exchange has carried out its quarterly review of the calculation base used for the MICEX indexes. As a result, RusHydro shares have been included in the MICEX 10 Index. The change will come into effect on 15 July 2009.

In fact, inclusion of RusHydro shares in the MICEX 10 Index means recognition of RusHydro shares as being among the 10 most liquid Russian stocks traded on the MICEX. JSC RusHydro is the first energy company in Russia to be included in the MICEX 10 Index, since the reorganization of JSC RAO UES of Russia.

The MICEX 10 Index is a price rather than weighted index, calculated as the arithmetic average of the price change for the 10 most liquid stocks traded by CJSC MICEX SE (irrespective of whether they figure on the CJSC MICEX SE quotation lists). The index reflects, in real time (from 10:30 to 19:00), the increase in the value of a portfolio consisting of the 10 stocks which are of equal weight in the portfolio at the starting point in time. This indicator is intended primarily for day-traders and makes it possible to monitor the smallest fluctuations in the prices of the main financial instruments.

The MICEX 10 Index is the first stock exchange index in Russia using a methodology that does not envisage temporal averaging of prices while the index value are recalculated after each transaction concluded with any of the 10 selected stocks in the main course of trading. The composition of the index basket is determined once a quarter on the basis of 4 liquidity indicators.

The MICEX 10 Index also includes the shares of JSC Sberbank of Russia, MMC Norilsk Nickel, JSC VTB, JSC Gazprom, JSC Rosneft, JSC Lukoil, etc.