投资基金是一种利益共享、风险共担的集合投资制度。通过发行基金券(也称受益凭证),将中小投资者的闲散资金集中起来,交由基金托管人托管,基金管理人具体管理运作,主要从事于证券等金融工具及期货、地产、高技术企业股权的投资。有的国家称之为共同基金(如美国),有的国家称为单位信托(如英国)。 Investment fund is a kind of collective investment system with benefit sharing and risk sharing. Through the issuance of fund vouchers (also known as benefit vouchers), the idle funds of small and medium-sized investors are collected and placed under the custody of the fund trustees and the fund managers in the specific management and operation. They are mainly engaged in the financial instruments and futures such as securities and real estate and high-tech enterprises Equity investment. Some countries call mutual funds (such as the United States), while others call unit trusts (such as the United Kingdom).