Double-whammy hammers Japan's trading houses By: CNBC.com News February 07, 2016 at 21:39 PM EST Japan's storied trading houses face billions of dollars in impairments from an emerging markets downturn and the ongoing commodities rout. Read More >> Related Stocks: Itochu Corp ADR Marubeni Corp Mitsubishi Corp Mitsui & Company ADR Sumitomo Corp ADR