Third, the interaction between the shadow banking system and the global banks is highly concentrated, because the global banks act as prime brokers, particularly for derivative trades. Data from the US Comptroller of Currency suggest that the top five US banks account for 96% of the total over-the-counter (OTC) derivative trades in the US.
第三，影子银行体系和全球银行的互动是高度集中的，因为全球银行担当着主经纪商的角色，特别是在衍生品交易中。美国货币审计署的数字表明，美国前五大银行经手了美国96%的场外衍生品交易。