┬áThe world’s top commodity trading houses are being told by brokers and exchanges to deposit hundreds of millions of dollars in extra funds to cover their exposure to soaring gas prices, seven sources with direct knowledge of the matter told Reuters. Glencore, Gunvor, Trafigura and Vitol are among the commodity merchants facing what are known as margin calls on their financial positions in natural gas markets, the sources said. The calls are forcing the traders to tie up more capital. Some, particularly smaller firms, are having to increase borrowing, leaving them with less cash to trade with and potentially hurting their profits, the sources said. The sources, who include company officials, brokers and bankers, declined to be named due to the sensitivity of the […]