Wall Street analysts and economists have emptied boxes of toner cartridge in recent weeks opining on what might lie beneath the balance sheets of banks and brokerage houses.

• 华尔街分析师和经济学家在近几周已用完多盒镭射印表机炭粉匣来对什麽可能危及银行和房屋经纪的资产负债表来表示意见。