CHICAGO – It is universally recognized that a key factor underlying the 2007-2008 financial crisis was the diffusion of collateralized debt obligations (CDOs), the infamous special-purpose vehicles that transformed lower-rated debt into highly rated debt. As these structures lost popularity on Wall Street, however, they gained popularity on the other side of the Atlantic.
芝加哥——债务抵押债券（CDOs）是将低评级债务转化为高评级债务的臭名昭著的专用工具，人们普遍认为，债务抵押债券是诱发2007－2008年金融危机的重要因素。 这项业务在华尔街失宠的同时，却在大西洋彼岸迅速普及。