Oct. 6 (Bloomberg) -- The following companies may be active in Russian trading. Stock symbols are in parentheses and share prices are from the previous close of trading in Moscow.

The 30-stock Micex Index lost 0.2 percent to 1,265.67. The dollar-denominated RTS Index dropped 0.6 percent to 1,217.21.

OAO Tatneft (TATN3 RX): The oil producer located in Russia’s Tatarstan region is due to report second-quarter earnings. Tatneft fell 2.3 percent to 124.86 rubles.

OAO Rosneft (ROSN RX): Oil rose for the first time in four days after the U.S. government reported an unexpected stockpile decline in the world’s biggest crude-consuming country. Russia’s biggest oil producer fell 0.1 percent to 175.03 rubles.

OAO Gazprom (GAZP RX): Gazprom and RWE AG have advanced in talks regarding the Russian natural gas company’s entry into the German power market and an agreement is probable, Sueddeutsche Zeitung reported, citing unidentified people close to the companies. The Moscow-based gas exporter fell 0.9 percent to 143.03 rubles.

--Editors: Brendan Walsh, Marie-France Han

To contact the reporter on this story: Anna Shiryaevskaya in Moscow at ashiryaevska@bloomberg.net

To contact the editor responsible for this story: Will Kennedy at wkennedy3@bloomberg.net