然而，英国巴克莱银行的分析家观察到，调换交易商仍然只占期权及期货合约总数的6.4%，尚不足以凭一己之力抬高物价。

But analysts at Barclays Capital note that swap dealers still accounted for just 6.4% of total options and futures contracts, not enough to drive prices up on their own.

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倘若能把芝加哥期货交易所收入旗下，芝加哥商业交易所将会占据美国场内期权交易合约市场份额的85%，而洲际交易所联盟将仅会拥有33%的份额。

With the CBOT under its wing, the CME would hold 85% of the market for exchange-traded futures contracts in America; the ICE combination would have only 33%.

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四家交易所- - -芝加哥商品交易所，美国洲际交易所，伦敦国际金融期货期权交易所和欧洲期货交易所称它们今年打算对单名合约进行清算。

Four exchanges - the Chicago Mercantile exchange (CME), IntercontinentalExchange, Liffe and Eurex - say they intend to clear single-name contracts this year.

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