The H exponent is a measure of randomness of NAV series of a fund. However, it is also the main reason why many investors keep on postponing their investments forever. Here is ETMutualFunds. If you do not have the appetite for the risk associated with your investments, you may find it extremely difficult to hold on to your investments during trying times. If you are looking for a mutual fund portfolio to achieve your long-term financial goals, you are at the right place. Asset size: For Hybrid funds, the threshold asset size is Rs 50 crore.