即使在金融产业内部，投行交易业务（股市、债券资本市场和并购）的规模也很小&不到美国银行和金融业务总规模的5%。
Even within finance , the business of deals ( equity and debt capital markets and mergers and acquisitions ) is small : less than 5 per cent of the total US bank and finance business .
产业投行