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A way of reporting fund performance whereby each reporting period is indexed at 100 or 1000. Hence, for a fund with a total return of 39% over the year, the VAMI indexed at 100 is 139.

Value-Added Monthly Index

A method of tracking the return on an investment over a given period of time in relation to a theoretical $1,000 investment. For example, suppose the yearly return on an investment is 10%; the VAMI would then be 1100. It is calculated thusly:

VAMI = Previous VAMI for equal period of time * (1 + return rate)