Social Investment Finance Intermediaries (SIFI’s) lend to social enterprises, organisations and not-for-profit charities. SIFI’s look for a social outcome in the organisations they invest in as well as a The money that an investor achieves from an investment. It is usually expressed as a % of the total amount invested over a period of time. It can also be called 'Rate of Return'. The monetary surplus generated by an organisation on an investment. It may be expressed as "not" (i.e. after deducting all expenses from the gross income generated by the investment) or "gross"..