Guaranteed Investment Funds is another term for Segregated Funds They are individual variable insurance contracts based on a specific term (a form of a life insurance contract) that can have growth potential similar to mutual funds.
What this means to investors is that they can take control of risk (with principal guarantees of up to 100% at maturity or death), while building strong assets for the future.
The monies deposited into the segregated fund policy by the investor are segregated by the insurer from its general assets. The insurance company invests the monies in mutual funds as directed by the policyholder. In this way the investor can benefit from increases in value of the underlying mutual fund with the principal value protected by a guarantee given by the insurer.