Goldman, a dyed-in-the-wool trading firm, is grabbing such opportunities with glee, taking business from once ubiquitous but now reeling rivals, such as Citigroup and UBS.

• 高盛这家彻头彻尾的贸易公司兴高采烈地抓住了这样的机会，曾对所有生意全盘接收，但如今使其对手如花旗，瑞士联合银行黯然失色。