Nomura Holdings Inc. has hired 15 investment bankers in the U.S. from firms including Credit Suisse Group AG, Bank of America Corp. and Jefferies Group LLC as the trading house builds out its North American business.

The additions, which took place over the past year, were for leveraged finance, equity capital markets, consumer, health care, financial institutions, industrials and technology and M&A groups, Nomura said Monday in a statement.

Chief Executive Officer Koji Nagai has said he is open to hiring entire teams of investment bankers or even making acquisitions as the firm attempts to shed its underdog status in the U.S.