The Fed also decided to begin reducing its holdings of Treasury securities, agency debt, and agency mortgage-backed securities.
美联储还决定开始减持国债、机构债务和机构抵押贷款支持证券。
英语百科
Agency debt
Agency debt also known as an Agency bond is a security, usually a bond, issued by a U.S. government-sponsored agency or federal budget agency. The offerings of these agencies are backed but not guaranteed by the US government. Some prominent issuers of these securities are Federal National Mortgage Association (Fannie Mae) and Federal Home Loan Mortgage Corporation (Freddie Mac). Agency debt is also called an agency security.