Options markets still flashing red for Russia's battered rouble

Russia's rouble has endured its worst week in more than 2-1/2 years but foreign exchange derivatives predict more pain ahead as bond and equity investors continue slashing exposure to the market after tough new sanctions from the United States.While a market bounce in the past two days has helped the rouble nearly halve its weekly losses since Wednesday, option market indicators such as implied volatility and risk reversals on the Russian currency remain at extremely elevated levels.More signifi